Moon, S. J., Jin, Hosub, Choi, W. S., Lee, J. S., Seo, S. S. A., Yu, J., ...
We investigated the temperature-dependent evolution of the electronic structure of the Jeff,1/2 Mott insulator Sr2IrO4 using optical spectroscopy. The optical conductivity spectra $\sigma(\omega)$ of...
Kim, T. H., Yang, S. M., Jang, S. Y., Ortiz, D., Song, T. K., ...
We describe the directional growth of ferroelectric domains in a multiferroic BiFeO3 thin film, which was grown epitaxially on a vicinal (001) SrTiO3 substrate. A detailed structural analysis of the...
Dual Character of Magnetism in Ferropnictides: Insights from Optical Measurements (2009)
Moon, S. J., Shin, J. H., Parker, D., Choi, W. S., Mazin, I. I., Lee, Y. S., ...
We investigate the electronic structure of EuFe$_{2}$As$_{2}$ using optical spectroscopy and first-principles calculations. At low temperature we observe the evolution of \textit{two} gap-like...
Large 1/f noise of unipolar resistance switching and its percolating nature (2009)
Lee, S. B., Park, S., Lee, J. S., Chae, S. C., Chang, S. H., Jung, M. H., ...
We investigated the 1/f noise of Pt/NiO/Pt capacitors that show unipolar resistance switching. When they were switched from the low to high resistance states, the power spectral density of the...
Multiple conducting carriers generated in LaAlO3/SrTiO3 heterostructures (2009)
Seo, S. S. A., Marton, Z., Choi, W. S., Hassink, G. W. J., Blank, D. H. A., Hwang, H. Y., ...
We have found that there is more than one type of conducting carriers generated in LaAlO3/SrTiO3 heterostructures by comparing the sheet carrier density and mobility from optical transmission...
Initial stages of nickel oxide growth on Ag(001) by pulsed laser deposition (2009)
Phark, S. H., Chang, Y. J., Noh, T. W.
Submonolayers of nickel oxide films were grown on an Ag(001) by pulsed laser deposition, and characterized in-situ by both scanning tunneling microscopy and X-ray photoelectron spectroscopy. We...
Predictability of reset switching voltages in unipolar resistance switching (2009)
Lee, S. B., Chae, S. C., Chang, S. H., Noh, T. W.
In unipolar resistance switching of NiO capacitors, Joule heating in the conducting channels should cause a strong nonlinearity in the low resistance state current-voltage (I-V) curves. Due to the...
Fundamental thickness limit of itinerant ferromagnetic SrRuO$_3$ thin films (2009)
Chang, Young Jun, Kim, Choong H., Kim, Y. S., Yu, J., Noh, T. W.
We report on a fundamental thickness limit of the itinerant ferromagnetic oxide SrRuO$_3$ that might arise from the orbital-selective quantum confinement effects. Experimentally, SrRuO$_3$ films...
Oxygen vacancy induced re-entrant spin glass behavior in multiferroic ErMnO3 thin films (2009)
Jang, S. Y., Lee, D., Noh, T. W., Jo, Y., ...
Epitaxial thin films of hexagonal ErMnO3 fabricated on Pt(111)/Al2O3(0001) and YSZ(111) substrates exhibited both ferroelectric character and magnetic ordering at low temperatures. As the temperature...
Bound Excitons in Sr₂CuO₃ (2009)
Kim, Kyung Wan, Gu, G. D., Homes, C. C., Noh, T. W.
We investigated temperature dependent optical spectra of the one-dimensional chain compound Sr₂CuO₃. The charge transfer transition polarized along the chain direction shows a strongly asymmetric...
Bound Excitons in Sr₂CuO₃ (2009)
Kim, Kyung Wan, Gu, G. D., Homes, C. C., Noh, T. W.
We investigated temperature dependent optical spectra of the one-dimensional chain compound Sr₂CuO₃. The charge transfer transition polarized along the chain direction shows a strongly asymmetric...
Nonlinear Dynamics of Domain Wall Propagation in Epitaxial Ferroelectric Thin Films (2009)
Jo, J. Y., Yang, S. M., Kim, T. H., Lee, H. N., Park, S., ...
We investigated the ferroelectric domain wall propagation in epitaxial Pb(Zr,Ti)O3 thin films over a wide temperature range (3 - 300 K). We measured the domain wall velocity under various electric...
Moon, S. J., Jin, H., Kim, Kyung Wan, Choi, W. S., Lee, Y. S., Yu, J., ...
We investigated the electronic structures of the 5d Ruddlesden-Popper series Sr₊₁IrnO₃₊₁ (n=1, 2, and ∞) using optical spectroscopy and first-principles calculations. As 5d orbitals are...
Moon, S. J., Jin, H., Kim, Kyung Wan, Choi, W. S., Lee, Y. S., Yu, J., ...
We investigated the electronic structures of the 5d Ruddlesden-Popper series Sr₊₁IrnO₃₊₁ (n=1, 2, and ∞) using optical spectroscopy and first-principles calculations. As 5d orbitals are...
Scaling behaviors of RESET voltages and currents in unipolar resistance switching (2008)
Lee, S. B., Chae, S. C., Chang, S. H., Lee, J. S., Seo, S., Kahng, B., ...
Unipolar switching phenomena have attracted a great deal of recent attention, but the wide distributions of switching voltages still pose major obstacles for scientific advancement and practical...
Lee, S. B., Chae, S. C., Chang, S. H., Lee, J. S., Park, S., Jo, Y., ...
We investigated third harmonic generation in NiO thin films, which exhibit unipolar resistance switching behavior. We found that the low resistance states of the films were strongly nonlinear, with...
Kim, Yong Su, Kim, J., Moon, S. J., Choi, W. S., Chang, Y. J., ...
Several defect configurations including oxygen vacancies have been investigated as possible origins of the reported room-temperature ferroelectricity of strontium titanate (STO) thin films [Appl....
Moon, S. J., Jin, H., Kim, K. W., Choi, W. S., Lee, Y. S., Yu, J., ...
We investigated the electronic structures of the 5$d$ Ruddlesden-Popper series Sr$_{n+1}$Ir$_{n}$O$_{3n+1}$ ($n$=1, 2, and $\infty$) using optical spectroscopy and first-principles calculations. As...
Bound Excitons in Sr$_{2}$CuO$_{3}$ (2008)
Kim, K. W., Gu, G. D., Homes, C. C., Noh, T. W.
We investigated temperature dependent optical spectra of the one-dimensional chain compound Sr$_{2}$CuO$_{3}$. The charge transfer transition polarized along the chain direction shows a strongly...
Yang, S. M., Jo, J. Y., Kim, D. J., Sung, H., Noh, T. W., Lee, H. N., ...
We investigated the time-dependent domain wall motion of epitaxial PbZr0.2Ti0.8O3 capacitors 100 nm-thick using modified piezoresponse force microscopy (PFM). We obtained successive domain evolution...
Chang, S. H., Lee, J. S., Chae, S. C., Lee, S. B., Liu, C., Kahng, B., ...
We observed two types of unipolar resistance switching (RS) in NiO film: memory RS at low temperature and threshold RS at high temperature. We explain these phenomena using a bond percolation model...
Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4 (2008)
Kim, B. J., Jin, Hosub, Moon, S. J., Leem, C. S., ...
We investigated electronic structure of 5d transition-metal oxide Sr2IrO4 using angle-resolved photoemission, optical conductivity, and x-ray absorption measurements and first-principles band...
Effects of heat dissipation on unipolar resistance switching in Pt/NiO/Pt capacitors (2008)
Chang, S. H., Chae, S. C., Lee, S. B., Liu, C., Noh, T. W., Lee, J. S., ...
We fabricated Pt/NiO/Pt capacitor structures with various bottom electrode thicknesses, $t_{BE}$, and investigated their resistance switching behaviors. The capacitors with $t_{BE} \geq 50$ nm...
Optical study of the free-carrier response of LaTiO₃/SrTiO₃ superlattices (2008)
Seo, S. S. A., Choi, W. S., Lee, H. N., Yu, Li, Kim, Kyungwan W., Bernhard, Christian, ...
We used infrared spectroscopic ellipsometry to investigate the electronic properties of LaTiO₃/SrTiO₃ superlattices (SLs). Our results indicated that, independent of the SL periodicity and...
Optical study of the free-carrier response of LaTiO₃/SrTiO₃ superlattices (2008)
Seo, S. S. A., Choi, W. S., Lee, H. N., Yu, Li, Kim, Kyungwan W., Bernhard, Christian, ...
We used infrared spectroscopic ellipsometry to investigate the electronic properties of LaTiO₃/SrTiO₃ superlattices (SLs). Our results indicated that, independent of the SL periodicity and...
Liu, Chunli, Chae, S. C., Chang, S. H., Lee, S. B., Noh, T. W., Lee, J. S., ...
We report the detailed current-voltage (I-V) characteristics of resistance switching in NiO thin films. In unipolar resistance switching, it is commonly believed that conducting filaments will...
Jo, J. Y., Yang, S. M., Han, H. S., Kim, D. J., Choi, W. S., Noh, T. W., ...
We investigated the time-dependent polarization switching behaviors of (111)-preferred polycrystalline Pb(ZrxTi1-x)O3 thin films with various Zr concentrations. We could explain all the polarization...
Electronic structures of hexagonal RMnO3 (R = Gd, Tb, Dy, and Ho) thin films (2007)
Choi, W. S., Kim, D. G., Seo, S. S. A., Moon, S. J., Lee, D., Lee, J. H., ...
We investigated the electronic structure of multiferroic hexagonal RMnO3 (R = Gd, Tb, Dy, and Ho) thin films using both optical spectroscopy and first-principles calculations. Using artificially...
Surface versus bulk characterization of the electronic inhomogeneity in a VO_{2} film (2007)
Chang, Y. J., Yang, J. S., Kim, Y. S., Kim, D. H., Noh, T. W., ...
We investigated the inhomogeneous electronic properties at the surface and interior of VO_{2} thin films that exhibit a strong first-order metal-insulator transition (MIT). Using the crystal...
Observation of inhomogeneous domain nucleation in epitaxial Pb(Zr,Ti)O3 capacitors (2007)
Kim, D. J., Jo, J. Y., Kim, T. H., Yang, S. M., Chen, B., Kim, Y. S., ...
We investigated domain nucleation process in epitaxial Pb(Zr,Ti)O3 capacitors under a modified piezoresponse force microscope. We obtained domain evolution images during polarization switching...
Moon, S. J., Choi, W. S., Kim, S. J., Lee, Y. S., Khalifah, P. G., Mandrus, D., ...
We investigated the electronic response of the quasi-two-dimensional spin gap compound La4Ru2O10 using optical spectroscopy. We observed drastic changes in the optical spectra as the temperature...
Kim, Yong Su, Kim, D. J., Kim, T. H., Noh, T. W., Choi, J. S., Park, B. H., ...
We investigated the ferroelectric properties of strontium titanate (STO) thin films deposited on SrTiO3 (001) substrate with SrRuO3 electrodes. The STO layer was grown coherently on the SrTiO3...
Domain Switching Kinetics in Disordered Ferroelectric Thin Films (2007)
Jo, J. Y., Han, H. S., Song, T. K., Noh, T. W.
We investigated domain kinetics by measuring the polarization switching behaviors of polycrystalline Pb(Zr,Ti)O$_{3}$ films, which are widely used in ferroelectric memory devices. Their switching...
Optical Study of the Free Carrier Response of LaTiO3/SrTiO3 Superlattices (2007)
Seo, S. S. A., Choi, W. S., Lee, H. N., Yu, L., Kim, K. W., Bernhard, C., ...
We used infrared spectroscopic ellipsometry to investigate the electronic properties of LaTiO3/SrTiO3 superlattices (SLs). Our results indicated that, independent of the SL periodicity and individual...
Multiferroic properties of epitaxially stabilized hexagonal DyMnO3 thin films (2006)
Murugavel, P., Lee, D., Noh, T. W., Jo, Y., ...
We fabricated epitaxial thin films of hexagonal DyMnO3, which otherwise form in a bulk perovskite structure, via deposition on Pt(111)//Al2O3 (0001) and YSZ(111) substrates: each of which has...
Epitaxial growth and the magnetic properties of orthorhombic YTiO3 thin films (2006)
Chae, S. C., Chang, Y. J., Seo, S. S. A., Noh, T. W., Jung, C. U.
High-quality YTiO3 thin films were grown on LaAlO3 (110) substrates at low oxygen pressures (
Coercive fields in ultrathin BaTiO3 capacitors (2006)
Jo, J. Y., Kim, Y. S., Noh, T. W., Yoon, Jong-Gul, Song, T. K.
Thickness-dependence of coercive field (EC) was investigated in ultrathin BaTiO3 capacitors with thicknesses (d) between 30 and 5 nm. The EC appears nearly independent of d below 15 nm, and decreases...
Liu, C., Chang, S. H., Noh, T. W., Abouzaid, M., Ruterana, P., Lee, H. H., ...
We have investigated the initial growth behavior and resulting microstructural properties of heteroepitaxial ZnO thin films prepared by pulsed laser deposition on sapphire (0001) substrates....
Electronic structures of layered perovskite Sr2MO4 (M=Ru, Rh, and Ir) (2006)
Moon, S. J., Kim, M. W., Kim, K. W., Lee, Y. S., ...
We investigated the electronic structures of the two-dimensional layered perovskite Sr$_{2}$\textit{M}O$_{4}$ (\textit{M}=4\textit{d} Ru, 4\textit{d} Rh, and 5\textit{d} Ir) using optical...
Dielectric constants of Ir, Ru, Pt, and IrO2: Contributions from bound charges (2006)
Choi, W. S., Seo, S. S. A., Kim, K. W., Noh, T. W., Kim, M. Y., Shin, S.
We investigated the dielectric functions $\epsilon$($\omega$) of Ir, Ru, Pt, and IrO$_2$, which are commonly used as electrodes in ferroelectric thin film applications. In particular, we investigated...
Magnetoelectric effects of nanoparticulate Pb(Zr0.52Ti0.48)O3-NiFe2O4 composite films (2006)
Ryu, Hyejin, Murugavel, P., Lee, J. H., Chae, S. C., Noh, T. W., Oh, Yoon Seok, ...
We fabricated Pb(Zr0.52Ti0.48)O3-NiFe2O4 composite films consisting of randomly dispersed NiFe2O4 nanoparticles in the Pb(Zr0.52Ti0.48)O3 matrix. The structural analysis revealed that the crystal...
Jo, J. Y., Kim, D. J., Kim, Y. S., Song, T. K., ...
A long standing problem of domain switching process - how domains nucleate - is examined in ultrathin ferroelectric films. We demonstrate that the large depolarization fields in ultrathin films could...
Kim, Myung Whun, Lee, H. J., Yang, B. J., Kim, Kee Hoon, Moritomo, Y., Yu, Jaejun, ...
We have systematically investigated the optical conductivity spectra of La$_{2-2x}$Sr$_{1+2x}$Mn$_{2}$O$_{7}$ ($0.3 \leqslant x \leqslant 0.5$). We find that just above the magnetic ordering...
Choi, H. K., Lee, W. O., OH, Y. S., Kim, K. H., Park, Y. D., Seo, S. S. A., ...
We report on the anomalous Hall coefficient and longitudinal resistivity scaling relationships on a series of annealed Ga1-xMnxAs epilayers (x~0.055). As-grown samples exhibit scaling parameter n of...
Koo, C. H., Lee, J. S., Kim, M. W., Chang, Y. J., Noh, T. W., ...
We investigated optical absorption coefficient spectra of an epitaxial VO2 film in wide photon energy (0.5 - 5.0 eV) and temperature (100 - 380 K) regions. In its insulating phase, we observed two...
Kim, D. J., Jo, J. Y., Kim, Y. S., Chang, Y. J., Lee, J. S., Yoon, Jong-Gul, ...
Time-dependent polarization relaxation behaviors induced by a depolarization field $E_{d}$ were investigated on high-quality ultrathin SrRuO$_{3}$/BaTiO$_{3}$/SrRuO$_{3}$ capacitors. The $E_d$ values...
Kim, Y. S., Jo, J. Y., Kim, D. J., Chang, Y. J., Lee, J. H., Noh, T. W., ...
Structural studies on ultrathin SrRuO3/BaTiO3/SrRuO3 capacitors, with BaTiO3 thicknesses of between 5 nm and 30 nm, show well-defined interfaces between ferroelectric BaTiO3 and electrode SrRuO3...
Kim, M. W., Moon, S. J., Jung, J. H., Yu, Jaejun, Parashar, Sachin, Murugavel, P., ...
We investigated the $ab$-plane absorption spectra of $R$MnO$%_{3}$ ($R$ = La, Pr, Nd, Gd, and Tb) thin films. As the $R$-ion size decreases, we observed a drastic suppression of the 2 eV peak,...
Lee, J. S., Moon, S. J., Noh, T. W., Nakatsuji, S., Maeno, Y.
We investigated optical spectra of quasi-two-dimensional multi-band Ca$% _{2-x} $Sr$_{x}$RuO$_{4}$ systems. The extended Drude model analysis on the ab-plane optical conductivity spectra indicates...
Lee, J. S., Moon, S. J., Noh, T. W., Takeda, T., Kanno, R., Yoshii, S., ...
Optical conductivity spectra of cubic pyrochlore $Y_{2-x} Bi_x Ru_2 O_7$ (0.0$\leq ${\it x}$\leq $2.0) compounds are investigated. As a metal-insulator transition (MIT) occurs around {\it x}$=$0.8,...
Kinetic Roughening of Ion-Sputtered Pd(001) Surface: Beyond the Kuramoto-Sivashinsky Model (2003)
Kim, T. C., Kim, H. J., Kim, D. H., Noh, D. Y., Kim, N. D., ...
We investigate the kinetic roughening of Ar$^+$ ion-sputtered Pd(001) surface both experimentally and theoretically. \textit{In situ} real-time x-ray reflectivity and \textit{in situ} scanning...
Resonant inelastic x-ray scattering study of holon-antiholon continuum in SrCuO2 (2003)
Kim, Young-June, Hill, J. P., Benthien, H., Essler, F. H. L., Jeckelmann, E., Choi, H. S., ...
We report a resonant inelastic x-ray scattering study of charge excitations in the quasi-one-dimensional Mott insulator SrCuO2. We observe a continuum of low-energy excitations, in which a highly...
Electron and orbital correlations in Ca_{2-x}Sr_{x}RuO_{4} probed by optical spectroscopy (2002)
Lee, J. S., Lee, Y. S., Noh, T. W., Yu, Jaejun, Nakatsuji, S., ...
The doping and temperature dependent optical conductivity spectra of the quasi-two-dimensional Ca_{2-x}Sr_xRuO_4 (0.0=
Kim, D. H., Yang, J. S., Lee, K. W., Bu, S. D., Noh, T. W., ...
Anatase Ti0.96Co0.04O2 films were grown epitaxially on SrTiO3 (001) substrates by using plused laser deposition with in-situ reflection high-energy electron diffraction. The oxygen partial pressure,...
Lee, Y. S., Lee, J. S., Noh, T. W., Byun, Douck-Young, Yoo, Kwang Soo, Yamaura, K., ...
We investigated the electronic structures of the perovskite-type 4$d$ transition metal oxides Sr$M$O$_3$ ($M$ = Zr, Mo, Ru, and Rh) using their optical conductivity spectra $\sigma (\omega)$. The...
Temperature-dependent Raman spectroscopy in BaRuO$_3$ systems (2002)
Lee, Y. S., Noh, T. W., Park, J. H., Cao, G., Crow, J. E., ...
We investigated the temperature-dependence of the Raman spectra of a nine-layer BaRuO$_3$ single crystal and a four-layer BaRuO$_3$ epitaxial film, which show pseudogap formations in their metallic...
Lee, Y. S., Yu, Jaejun, Lee, J. S., Noh, T. W., Choi, Han-Yong, ...
Optical conductivity spectra $\sigma_1(\omega)$ of paramagnetic CaRuO$_3$ are investigated at various temperatures. At T=10 K, it shows a non-Fermi liquid behavior of $\sigma_1(\omega)\sim...
Complicated nature of the gap in MgB2: magnetic field-dependent optical studies (2002)
Lee, H. J., Jung, J. H., Kim, K. W., Kim, M. W., Noh, T. W., Wang, Y. J., ...
We investigated the magnetic field (H)-dependent optical conductivity spectra of MgB2 thin film in the far-infrared region. The H-dependences can be explained by the increase of normal metallic...
Spin/Orbital Pattern-Dependent Polaron Absorption in Nd(1-x)Sr(x)MnO3 (2002)
Kim, M. W., Jung, J. H., Kim, K. H., Lee, H. J., Yu, Jaejun, Noh, T. W., ...
We investigated optical properties of Nd(1-x)Sr(x)MnO3 (x= 0.40, 0.50, 0.55, and 0.65) single crystals. In the spin/orbital disordered state, their conductivity spectra look quite similar, and the...
Charge Ordering Fluctuation and Optical Pseudogap in La$_{1-x}$Ca$_{x}$MnO$_{3}$ (2002)
Kim, K. H., Lee, S., Noh, T. W., Cheong, S-W.
Optical spectroscopy was used to investigate the optical gap (2$\Delta $) due to charge ordering (CO) and related pseudogap developments with x and temperature (T) in La$_{1-x}$Ca$_{x}$MnO$_{3}$...
Optical Evidence of Multiphase Coexistence in Single Crystalline (La,Pr,Ca)MnO3 (2002)
Lee, H. J., Kim, K. H., Kim, M. W., Noh, T. W., Kim, B. G., Koo, T. Y., ...
We investigated temperature (T)- and magnetic field-dependent optical conductivity spectra (\s\w) of a La_5/8-yPr_yCa_3/8MnO_3 (y~0.35) single crystal, showing intriguing phase coexistence at low T....
Pseudogap formation of four-layer BaRuO$_3$ and its electrodynamic response changes (2001)
Lee, Y. S., Lee, J. S., Kim, K. W., Noh, T. W., Yu, Jaejun, Bang, Yunkyu, ...
We investiaged the optical properties of four-layer BaRuO$_{3}$, which shows a fermi-liquid-like behavior at low temperature. Its optical conductivity spectra clearly displayed the formation of a...
Lee, J. S., Lee, Y. S., Noh, T. W., Char, K., Park, Jonghyurk, ...
We investigated the electronic structures of the bandwidth-controlled ruthenates, Y$_{2}$Ru$_{2}$O$_{7}$, CaRuO$_{3}$, SrRuO$_{3}$, and Bi$_{2}$Ru$% _{2}$O$_{7}$, by optical conductivity analysis in...
Far-infrared transmission studies of c-axis oriented superconducting MgB2 thin film (2001)
Jung, J. H., Kim, K. W., Lee, H. J., Kim, M. W., Noh, T. W., Kang, W. N., ...
We reported far-infrared transmission measurements on a c-axis oriented superconducting MgB$_{2}$ thin film in the frequency range of 30 $\sim$ 250 cm$^{-1}$. We found that these measurements were...
Optical Studies of a Layered Manganite La_{1.2}Sr_{1.8}Mn_2O_7 : Polaron Correlation Effect (2000)
Lee, H. J., Kim, K. H., Jung, J. H., Noh, T. W., Suryanarayanan, R., Dhalenne, G., ...
Optical conductivity spectra of a cleaved ab-plane of a La_{1.2}Sr_{1.8}Mn_2O_7 single crystal exhibit a small polaron absorption band in the mid-infrared region at overall temperatures. With...
Jung, J. H., Lee, H. J., Noh, T. W., Moritomo, Y., Wang, Y. J., Wei, X.
Magnetic field ($H$)-dependent optical conductivity spectra $\sigma (\omega) $ and dielectric constant spectra $\epsilon (\omega)$ of a layered antiferromagnet ($A$-type) Pr$_{1/2}$Sr$_{1/2}$MnO$_3$...
Jung, J. H., Lee, H. J., Noh, T. W., Choi, E. J., Moritomo, Y., Wang, Y. J., ...
We investigated the temperature ($T=$ 15 $\sim $ 290 K) and the magnetic field ($H=$ 0 $\sim $ 17 T) dependent optical conductivity spectra of a charge/orbital ordered manganite,...
Jung, J. H., Choi, E. J., Lee, H. J., Yu, Jaejun, Moritomo, Y., Noh, T. W.
We investigated optical properties of Pr_{0.5}Sr_{0.5}MnO_3, which has the A-type antiferromagnetic ordering at a low temperature. We found that T- dependence of spectral weight transfer shows a...
Lee, H. J., Jung, J. H., Lee, Y. S., Ahn, J. S., Noh, T. W., Kim, K. H., ...
We investigated temperature dependent optical conductivity spectra of Nd0.7Sr0.3MnO3 single crystal. We found that polishing and surface scattering effects on the Nd0.7Sr0.3MnO3 crystal surfaces...
Optical Investigations of Charge Gap in Orbital Ordered La1/2Sr3/2MnO4 (1999)
Jung, J. H., Ahn, J. S., Noh, T. W., Lee, Jinhyoung, Yu, Jaejun, Moritomo, Y., ...
Temperature and polarization dependent electronic structure of La1/2Sr3/2MnO4 were investigated by optical conductivity analyses. With decreasing temperature, for E//ab, a broad mid-infrared (MIR)...
Spectral evolution in (Ca, Sr)RuO3 near the Mott-Hubbard transition. (1999)
Ahn, J. S., Bak, J., Choi, H. S., Noh, T. W., Han, J. E., Bang, Y., ...
Infrared Diffuse Reflectivity Study of High-T(sub c) Superconductors. (1998)
Rosenberg, A., Barker, A. S., Noh, T. W., Ohsaka, T., Sievers, A. J.
The room temperature spectral dependence of the diffuse reflectivity of polished sintered pellets of YBa2Cu3O(7-y), La(2-x)Sr(x)CuO(4-y), and related superconducting and nonsuperconducting oxides...
OPTICAL AND MECHANICAL PROPERTIES OF ZINC SULPHIDE DIAMOND COMPOSITES (1998)
XUE, L.A., FARQUHAR, D.S., NOH, T.W.
PURE ZnS, AN INFRARED TRANSPARENT BUT MECHANICALLY WEAK MATERIAL, WAS TOUGHENED WITH DIAMOND PARTICLES. THE OPTICAL PROPERTIES OF THE PURE MATERIAL WERE PRESERVED IN THE COMPOSITE WHEN THE DIAMOND...
Optical Investigations of La_{7/8}Sr_{1/8}MnO_3 (1998)
Jung, J. H., Kim, K. H., Lee, H. J., Ahn, J. S., Hur, N. J., Noh, T. W., ...
We investigated temperature dependent optical conductivity spectra of La_{7/8}Sr_{1/8}MnO_3. Its phonon bending mode starts to be splitted near a structural phase transition temperature. With further...
Spectral evolution in (Ca,Sr)RuO_3 near the Mott-Hubbard transition (1998)
Ahn, J. S., Bak, J., Choi, H. S., Noh, T. W., Han, J. E., Bang, Yunkyu, ...
We investigated the optical properties of (Ca,Sr)RuO_3 films on the borderline of a metal-insulator (M-I) transition. Our results show all of the predicted characteristics for a metallic Mott-Hubbard...
Kim, K. H., Jung, J. H., Eom, D. J., Noh, T. W., Yu, Jaejun, Choi, E. J.
Optical conductivity spectra of La_{0.7-y}Pr_{y}Ca_{0.3}MnO_3 were systematically investigated. For metallic samples, the spectral weight below 0.5 eV, whose magnitude can be represented by the...
Polaron Absorption in a Perovskite Manganite La0.7Ca0.3MnO3 (1998)
Kim, K. H., Jung, J. H., Noh, T. W.
Temperature dependent optical conductivity spectra of a La0.7Ca0.3MnO3 (LCMO) sample were measured. In the metallic regime at very low temperatures, they clearly showed two types of absorption...
INTENSITIES OF $R_{v'}, (0)$ TRANSITIONS IN SOLID HD (1989)
Tipping, R. H., Poll, J. D., Lee, S. Y., Lee, S-i., Noh, T. W., Gaines, James R.
Author Institution: Department of Physics, University of Alabama; Department of Physics, University of Guelph; Applied Optics Laboratory, Korea Advanced Institute of Science and Technology;...