D'yakonov-Perel' spin relaxation in InSb/AlInSb quantum wells (2009)
Li, Jun, Chang, Kai, Peeters, F. M.
We investigate theoretically the D'yakonov-Perel' spin relaxation time by solving the eight-band Kane model and Poisson equation self-consistently. Our results show distinct behavior with the...
We demonstrate theoretically that electric field can drive a quantum phase transition between band insulator to topological insulator in CdTe/HgCdTe/CdTe quantum wells. The numerical results suggest...
Resonant Tunneling through S- and U-shaped Graphene Nanoribbons (2009)
Zhang, Z. Z., Wu, Z. H., Chang, Kai, Peeters, F. M.
We theoretically investigate resonant tunneling through S- and U-shaped nanostructured graphene nanoribbons. A rich structure of resonant tunneling peaks are found eminating from different...
Anisotropic transport in quantum wires embedded in (110) plane (2009)
We investigate theoretically the effects of the Coulomb interaction and spin-orbit interactions (SOIs) on the anisotropic transport property of semiconductor quantum wires embedded in (110) plane....
Electrically-controllable RKKY interaction in semiconductor quantum wires (2009)
Zhu, Jia-Ji, Chang, Kai, Liu, Ren-Bao, Lin, Hai-Qing
We demonstrate in theory that it is possible to all-electrically manipulate the RKKY interaction in a quasi-one-dimensional electron gas embedded in a semiconductor heterostructure, in the presence...
Zero-field spin splitting and spin relaxation in semiconductor broken-gap quantum wells (2008)
Li, Jun, Yang, Wen, Chang, Kai
We investigate theoretically the spin states in InAs/GaSb broken-gap quantum wells by solving the Kane model and the Poisson equation self-consistently. We find that due to the electron-hole...
Electric-field switching of exciton spin splitting in coupled quantum dots (2008)
We investigate theoretically the spin splitting of the exciton states in semiconductor coupled quantum dots (CQDs) containing a single magnetic ion. We find that the spin splitting can be switched...
Resonant Tunneling through double-bended Graphene Nanoribbons (2008)
Zhang, Z. Z., Chang, Kai, Chan, K. S.
We investigate theoretically resonant tunneling through double-bended graphene nanoribbon structures, i.e., armchair-edged graphene nanoribbons (AGNRs) in between two semi-infinite zigzag graphene...
Tuning of energy levels and optical properties of graphene quantum dots (2008)
Zhang, Z. Z., Chang, Kai, Peeters, F. M.
We investigate theoretically the magnetic levels and optical properties of zigzag- and armchair-edged hexagonal graphene quantum dots (GQDs) utilizing the tight-binding method. A new bound edge state...
Anomalous Rashba spin-orbit interaction in InAs/GaSb quantum wells (2008)
Li, J., Chang, Kai, Hai, G. Q., Chan, K. S.
We investigate theoretically the Rashba spin-orbit interaction in InAs/GaSb quantum wells(QWs). We find that the Rashba spin-splitting (RSS) depends sensitively on the thickness of the InAs layer....
We investigate theoretically the spin transport in two-terminal mesoscopic rings in the presence of both the Rashba spin-orbit interaction (RSOI) and the Dresselhaus spin-orbit interaction (DSOI). We...
Direct optical detection of pure spin current in semiconductors (2007)
We suggest a new practical scheme for the direct detection of pure spin current by using the two-color Faraday rotation of optical quantum interference process (QUIP) in a semiconductor system. We...
A Cassegrain offset-fed dual-band reflectarray (2007)
Huang, John, Han, Chulmin, Chang, Kai
An X/Ka dual-band microstrip reflectarray with circular polarization (CP) has been constructed using thin membranes and Cassegrain offset-fed configuration. It is believed that this is the first...
Intrinsic Spin Hall Effect Induced by Quantum Phase Transition in HgCdTe Quantum Wells (2007)
Yang, W., Chang, Kai, Zhang, S. C.
Spin Hall effect can be induced both by the extrinsic impurity scattering and by the intrinsic spin-orbit coupling in the electronic structure. The HgTe/CdTe quantum well has a quantum phase...
Enhanced visibility of graphene: effect of one-dimensional photonic crystal (2007)
Chang, Kai, Liu, J. T., Dai, N., Xia, J. B.
We investigate theoretically the light reflectance of a graphene layer prepared on the top of one-dimensional Si/SiO2 photonic crystal (1DPC). It is shown that the visibility of the graphene layers...
Spin states and persistent currents in a mesoscopic ring with an embedded magnetic impurity (2007)
Spin states and persistent currents are investigated theoretically in a mesoscopic ring with an embedded magnetic ion under a uniform magnetic field including the spin-orbit interactions. The...
Investigation of Utilizing Fluent MPM in Microscopic Biological Applications (2007)
Kai Chang, Foster Chen, Jayesh Mutyal, Herbert Radisch, Zhongliang Tang, Edward Leonard
The isolation of rare cells (those infrequently seen in the medium of interest) is important in diagnostic medicine. The use of antibody-coated surfaces to bind and capture cells of specific types...
Two-dimensional Classical Wigner Crystal: Elliptical Confining Potential (2006)
We investigate theoretically the ground-state configurations of two-dimensional charged-particle systems with an elliptical hard-wall boundary and their vibrational eigenmodes. The systems exhibit a...
Interplay between s-d exchange interaction and Rashba effect: spin-polarized transport (2006)
Yang, W., Chang, Kai, Wu, X. G., Zheng, H. Z., Peeters, F. M.
We investigate the spin-polarized transport properties of a two-dimensional electron gas in a n-type diluted magnetic narrow gap semiconductor quantum well subjected to a perpendicular magnetic and...
Nonlinear Rashba Model and Spin Relaxation in Quantum Wells (2006)
We find that the Rashba spin splitting is intrinsically a nonlinear function of the momentum, and the linear Rasha model may overestimate it significantly, especially in narrow-gap materials. A...
Spin states and persistent currents in mesoscopic rings: spin-orbit interactions (2006)
We investigate theoretically electron spin states in one dimensional (1D) and two dimensional (2D) hard-wall mesoscopic rings in the presence of both the Rashba spin-orbit interaction (RSOI) and the...
Lu, Shulong, Jiang, De-Sheng, Dai, Jianming, Yang, Chunlei, He, Hongtao, Ge, Wei-Kun, ...
Magnetophotoluminescence properties of Zn0.88Mn0.12Se thin films grown by metal-organic chemical vapor deposition on GaAs substrates are investigated in fields up to 10 T. The linewidth of the...
Rashba spin splitting in biased semiconductor quantum wells (2005)
Rashba spin splitting (RSS) in biased semiconductor quantum wells is investigated theoretically based on the eight-band envelope function model. We find that at large wave vectors, RSS is both...
Spin-dependent tunneling through a symmetric semiconductor barrier: the Dresselhaus effect (2005)
Wang, L. G., Yang, Wen, Chang, Kai
Spin-dependent tunneling through a symmetric semiconductor barrier is studied including the k^3 Dresselhaus effect. The spin-dependent transmission of electron can be obtained analytically. By...
Yang, W., Chang, Kai, Wu, X. G., Zheng, H. Z.
The transport property of a lateral two-dimensional diluted magnetic semiconductor electron gas under a spatially periodic magnetic field is investigated theoretically. We find that the electron...
はじめに, 1.中国共産党のストライキに対する政策及び憲法のストライキ権に関する規定, (1).社会主義中国におけるストライキ権,...
Ahmed Nader Mohieldin, Edgar Sánchez-sinencio, Aydin Karsilayan, Alexander Parlos, Kai Chang, Chanan Singh
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RF and Microwave Circuit and Component Design for Wireless Systems (2002)
Chang, Kai, Bahl, Inder Jit, Nair, Vijay
Introducción a la tecnología para el diseño de circuitos y componentes de radio frecuencia y de microondas para ser utilizada en sistemas inalámbricos de comunicación personal y de datos. En los...
RF and Microwave Circuit and Component Design for Wireless Systems (2002)
Chang, Kai, Bahl, Inder Jit, Nair, Vijay
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Radial Beam TWT Electron Beam Analysis. (2002)
This study developed practical designs for prototype versions of an electromagnetic focusing structure and a radial beam traveling-wave tube electron gun. Computer simulations were used to develop...
Oscillating magnetoresistance in diluted magnetic semiconductor barrier structures (2001)
Chang, Kai, Xia, J. B., Peeters, F. M.
Ballistic spin polarized transport through diluted magnetic semiconductor (DMS) single and double barrier structures is investigated theoretically using a two-component model. The tunneling...
Chang, Kai, Xia, J. B., Peeters, F. M.
Longitudinal spin transport in diluted magnetic semiconductor superlattices is investigated theoretically. The longitudinal magnetoconductivity (MC) in such systems exhibits an oscillating behavior...
RF and Microwave Wireless Systems (2000)
Contenido: Introducción; Ondas y líneas de transmisión; Sistemas de antenas; Componentes y sus parámetros de sistema; Parámetros de sistema del receptor; Transmisores y sistemas de osciladores;...
Millimeter-Wave Quasi-Optical and Spatial Powder Combining Techniques. (1998)
This report summarizes the research activities carried out in Electromagnetics and Microwave Laboratory, Department of Electrical Engineering, Texas A and M University. The project was sponsored by...
Millimeter-Wave Quasi-Optical and Spatial Power Combining Techniques. (1998)
This report summarizes the research activities carried out in Electromagnetics and Microwave Laboratory, Department of Electrical Engineering, Texas A and M University. The project was sponsored by...
Millimeter-Wave Quasi-Optical Planar Circuits and Power Combining. (1998)
This report summarizes the research activities carried out in the Electromagnetics and Microwave Laboratory, Department of Electrical Engineering, Texas A&M University. The project was sponsored...
Millimeter-Wave Active Antennas and Spatial Power Combiners (1998)
This report summarizes the research activities carried out in the Electromagnetics and Microwave Laboratory, Department of Electrical Engineering, Texas A&M University. The project was sponsored...
ANALYSIS OF STRIPS AND STRIP DIODE MOUNTS IN WAVEGUIDE.. (1976)
DISSERTATION (PH.D.)--THE UNIVERSITY OF MICHIGAN
The SALM Family of Adhesion-like Molecules Forms Heteromeric and Homomeric Complexes*S⃞
Seabold, Gail K., Wang, Philip Y., Chang, Kai, Wang, Chang-Yu, Wang, Ya-Xian, Petralia, Ronald S., ...
Synaptic adhesion-like molecules (SALMs) are a newly discovered family of adhesion molecules that play roles in synapse formation and neurite outgrowth. The SALM family is comprised of five...