Lemaux, B. C., Lubin, L. M., Sawicki, M., Martin, C., Lagattuta, D. J., Gal, R. R., ...
We present results of a spectroscopic search for Lyα emitters (LAEs) in the Cl1604 supercluster field using the extensive spectroscopic Keck/DEep Imaging Multi-Object Spectrograph database taken as...
Evolution of Star-forming Galaxies seen from Lyman Break Galaxies at $z\sim5$ (2008)
Ohta, K., Yabe, K., Iwata, I., Sawicki, M., Akiyama, M., Tamura, N., ...
Properties of Lyman Break Galaxies at $z\sim5$ are presented and are compared with those at $z\sim 2-3$ LBGs to see evolution of LBGs from $z\sim5$ to $z \sim3-2$. The LBGs at $z\sim5$ are tend to...
Controlled aggregation of magnetic ions in a semiconductor. Experimental demonstration (2008)
Bonanni, A., Navarro-Quezada, A., Li, Tian, Wegscheider, M., Matej, Z., Holy, V., ...
The control on the distribution of magnetic ions into a semiconducting host is crucial for the functionality of magnetically doped semiconductors. Through a structural analysis at the nanoscale, we...
Detailed transport investigation of the magnetic anisotropy of (Ga,Mn)As (2008)
Pappert, K., Gould, C., Sawicki, M., Wenisch, J., Brunner, K., Schmidt, G., ...
This paper discusses transport methods for the investigation of the (Ga,Mn)As magnetic anisotropy. Typical magnetoresistance behaviour for different anisotropy types is discussed, focusing on an in...
Observation of strong-coupling effects in a diluted magnetic semiconductor (Ga,Fe)N (2007)
Pacuski, W., Kossacki, P., Ferrand, D., Golnik, A., Cibert, J., Wegscheider, M., ...
A direct observation of the giant Zeeman splitting of the free excitons in (Ga,Fe)N is reported. The magnetooptical and magnetization data imply the ferromagnetic sign and a reduced magnitude of the...
MnAs dots grown on GaN(0001)-(1x1) surface (2007)
Kowalik, I. A., Kowalski, B. J., Iwanowski, R. J., Kopalko, K., Łusakowska, E., Sawicki, M.
MnAs has been grown by means of MBE on the GaN(0001)-(1x1) surface. Two options of initiating the crystal growth were applied: (a) a regular MBE procedure (manganese and arsenic were delivered...
Differential Evolution of the UV Luminosity Function of Lyman Break Galaxies from z~5 to 3 (2007)
Iwata, I., Ohta, K., Tamura, N., Akiyama, M., Aoki, K., Ando, M., ...
(abridged) We report the UV luminosity function (LF) of Lyman break galaxies at z~5 derived from a deep and wide survey using the Subaru/Suprime-Cam. Target fields consist of two blank regions of the...
Lithographic engineering of anisotropies in (Ga,Mn)As (2006)
Hümpfner, S., Sawicki, M., Pappert, K., Wenisch, J., Brunner, K., Gould, C., ...
The focus of studies on ferromagnetic semiconductors is moving from material issues to device functionalities based on novel phenomena often associated with the anisotropy properties of these...
Bonanni, A., Kiecana, M., Simbrunner, C., Li, Tian, Sawicki, M., Quast, M. Wegscheider. M., ...
We report on the metalorganic chemical vapor deposition (MOCVD) of GaN:Fe and (Ga,Fe)N layers on c-sapphire substrates and their thorough characterization via high-resolution x-ray diffraction...
Luminosity Dependent Evolution of Lyman Break Galaxies from redshift 5 to 3 (2006)
Iwata, I., Ohta, K., Tamura, N., Akiyama, M., Aoki, K., Ando, M., ...
In this contribution we briefly describe our recent results on the properties of Lyman break galaxies at z~5 obtained from deep and wide blank field surveys using Subaru telescope, and through the...
Magnetic domain structure and magnetization reversal in (311)B Ga0.91Mn0.09As films (2006)
Pross, A., Bending, S. J., Wang, K. Y., Edmonds, K. W., Campion, R. P., Foxon, C. T., ...
Control of Coercivities in (Ga,Mn)As Thin Films by Small Concentrations of MnAs Nanoclusters (2005)
Wang, K. Y., Sawicki, M., Edmonds, K. W., Campion, R. P., Rushforth, A. W., Freeman, A. A., ...
We demonstrate that low concentrations of a secondary magnetic phase in (Ga,Mn)As thin films can enhance the coercivity by factors up to ~100 without significantly degrading the Curie temperature or...
Low-temperature magnetization of (Ga,Mn)As semiconductors (2005)
Jungwirth, T., Masek, J., Wang, K. Y., Edmonds, K. W., Sawicki, M., Polini, M., ...
We report on a comprehensive study of the ferromagnetic moment per Mn atom in (Ga,Mn)As ferromagnetic semiconductors. Theoretical discussion is based on microscopic calculations and on an effective...
Wang, K. Y., Edmonds, K. W., Zhao, L. X., Sawicki, M., Campion, R. P., Gallagher, B. L., ...
We report the results of a detailed study of the structural, magnetic and magnetotransport properties of as-grown and annealed Ga0.91Mn0.09As thin films grown on (311)A and (311)B GaAs substrates....
Reorientation Transition in Single-Domain (Ga,Mn)As (2005)
Wang, K-Y., Sawicki, M., Edmonds, K. W., Campion, R. P., Maat, S., Foxon, C. T., ...
We demonstrate that the interplay of in-plane biaxial and uniaxial anisotropy fields in (Ga,Mn)As results in a magnetization reorientation transition and an anisotropic AC susceptibility which is...
Prospects of high temperature ferromagnetism in (Ga,Mn)As semiconductors (2005)
Jungwirth, T., Wang, K. Y., Masek, J., Edmonds, K. W., Konig, Jurgen, Sinova, Jairo, ...
We report on a comprehensive combined experimental and theoretical study of Curie temperature trends in (Ga,Mn)As ferromagnetic semiconductors. Broad agreement between theoretical expectations and...
A search for the first massive galaxy clusters. (2005)
Willott, C.J., Crampton, D., Hutchings, J.B., Sawicki, M., Simard, L., Jarvis, M.J., ...
Magnetism in (Ga,Mn)As Thin Films With TC Up To 173K (2004)
Wang, K. Y., Campion, R. P., Edmonds, K. W., Sawicki, M., Dietl, T., Foxon, C. T., ...
We have investigated the magnetic properties of (Ga,Mn)As thin films with Mn concentration between 1 and 9%. Ferromagnetic transition temperatures TC of up to 173K are observed. The results are...
Transport and Magnetism in p-type cubic (Ga,Mn)N (2004)
Edmonds, KW, Novikov, SV, Sawicki, M, Campion, RP, Staddon, C. R., Giddings, AD, ...
The electrical and magnetic properties of p-type cubic (Ga,Mn)N thin films grown by plasma-assisted molecular beam epitaxy are reported. Hole concentrations in excess of 1018 cm-3 at room temperature...
In-plane uniaxial anisotropy rotations in (Ga,Mn)As thin films (2004)
Sawicki, M., Wang, K-Y., Edmonds, K. W., Campion, R. P., Staddon, C. R., Farley, N. R. S., ...
We show, by SQUID magnetometry, that in (Ga,Mn)As films the in-plane uniaxial magnetic easy axis is consistently associated with particular crystallographic directions and that it can be rotated from...
Temperature Dependent Magnetic Anisotropy in (Ga,Mn)As Layers (2004)
Sawicki, M., Matsukura, F., Idziaszek, A., Dietl, T., Schott, G. M., Ruester, C., ...
It is demonstrated by SQUID measurements that (Ga,Mn)As films can exhibit perpendicular easy axis at low temperatures, even under compressive strain, provided that the hole concentration is...
Search For Hole Mediated Ferromagnetism In Cubic (Ga,Mn)N (2004)
Sawicki, M., Dietl, T., Foxon, C. T., Novikov, S. V., Campion, R. P., Edmonds, K. W., ...
Results of magnetisation measurements on p-type zincblende-(Ga,Mn)N are reported. In addition to a small high temperature ferromagnetic signal, we detect ferromagnetic correlation among the remaining...
MnAs overlayer on GaN(0001)-(1x1) - its growth, morphology and electronic structure (2004)
Kowalski, B. J., Kowalik, I. A., Iwanowski, R. J., Lusakowska, E., Sawicki, M., Sadowski, J., ...
Spontaneous formation of grains has been observed for the MnAs layer grown by means of MBE on the GaN(0001)-(1x1) surface. Electronic structure of the system was investigated in situ by resonant...
Very high spin polarization in GaAs by injection from a (Ga,Mn)As Zener diode (2004)
Motsnyi, VF, Sawicki, M, ...
We demonstrate an electrically injected electron spin polarization in GaAs of 80% at 4.6 K by interband tunneling from the valence band of (Ga,Mn)As into an (Al,Ga)As light-emitting diode. The...
Mn Interstitial Diffusion in (Ga,Mn)As (2003)
Edmonds, K. W., Boguslawski, P., Wang, K. Y., Campion, R. P., Farley, N. R. S., Gallagher, B. L., ...
We present a combined theoretical and experimental study of the ferromagnetic semiconductor (Ga,Mn)As which explains the remarkably large changes observed on low temperature annealing. Careful...
Kepa, H., Van Khoi, Le, Brown, C. M., Sawicki, M., Furdyna, J. K., Giebultowicz, T. M., ...
The effect of hole doping on the exchange coupling of the nearest neighbor (NN) Mn pairs in Zn$_{1-x}$Mn$_x$Te is probed by inelastic neutron scattering. The difference in the NN exchange energy...
Temperature Dependent Magnetic Anisotropy in (Ga,Ma)As Layers (2002)
Sawicki, M., Matsukura, F., Idziaszek, A., Dietl, T., Schott, G. M., Ruester, C., ...
It is demonstrated by SQUID magnetization measurements that (Ga,Mn)As films can exhibit rich characteristics of magnetic anisotropy depending not only to the epitaxial strain but being strongly...
Transparent ZnO-based ohmic contact to p-GaN (2002)
Kaminska, E., Piotrowska, A., Golaszewska, K., Guziewicz, M., Kruszka, R., Kudla, A., ...
Environment and galaxy evolution at intermediate redshift in the CNOC2 survey. (2001)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall, P. B., Patton, D. R., ...
The systematic variation of galaxy colors and types with clustering environment could either be the result of local conditions at formation or subsequent environmental effects as larger scale...
Dynamically Close Galaxy Pairs and Merger Rate Evolution in the CNOC2 Redshift Survey (2001)
Patton, D. R., Pritchet, C. J., Carlberg, R. G., Marzke, R. O., Yee, H. K. C., Hall, P. B., ...
We investigate redshift evolution in the galaxy merger and accretion rates, using a well-defined sample of 4184 galaxies with 0.12 < z < 0.55 and R_C < 21.5. We identify 88 galaxies in close (5 < r_p...
Environment and Galaxy Evolution at Intermediate Redshift in the CNOC2 Survey (2001)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall, P. B., Patton, D. R., ...
(abridged) The systematic variation of galaxy colors and types with clustering environment could either be the result of local conditions at formation or subsequent environmental effects as larger...
Shepherd, C. W., Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Sawicki, M., ...
We examine how the spatial correlation function of galaxies from the CNOC2 Field Galaxy Redshift Survey depends on galaxy color, luminosity and redshift. The projected correlation function w_p is...
Galaxy groups at intermediate redshift. (2001)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Patton, D. R., ...
Galaxy groups likely to be virialized are identified within the CNOC2 intermediate-redshift galaxy survey. The resulting groups have a median velocity dispersion, 1200 km s-1. The virial masstolight...
Effect of exchange springs on the coercivity of DyFe2-YFe2 superlattices (2001)
Beaujour, JML, Bowden, GJ, Gordeev, S, De Groot, PAJ, Rainford, BD, Sawicki, M, ...
Bartlett, Philip N., Birkin, Peter N., Ghanem, Mohamed A., De Groot, Peter, Sawicki, M.
Lyotropic liquid crystalline phases formed at high concentrations of nonionic surfactants provide a versatile templating medium that can be used to produce nanostructured materials with regular...
Bartlett, Philip N., Birkin, Peter N., Ghanem, Mohamed A., De Groot, Peter, Sawicki, M.
Lyotropic liquid crystalline phases formed at high concentrations of nonionic surfactants provide a versatile templating medium that can be used to produce nanostructured materials with regular...
Effect of exchange springs on the coercivity of DyFe2-YFe2 superlattices (2001)
Beaujour, J.M.L., Bowden, G.J., Gordeev, S., Rainford, B.D., Sawicki, M., ...
The coercivity of MBE-grown Laves-phase DyFe2–YFe2 thin-layered (50 Å) superlattice samples, with a (1 1 0) growth direction, can be varied by adjusting the relative thickness of the YFe2 and...
Weak lensing study of low mass galaxy groups: implications for Omega_m (2000)
Hoekstra, H., Franx, M., Kuijken, K., Carlberg, R. G., Yee, H. K. C., Lin, H., ...
We report on the first measurement of the average mass and mass-to-light ratio of galaxy groups by analysing the weak lensing signal induced by these systems. The groups, which have velocity...
Galaxy Groups at Intermediate Redshift (2000)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall, P. B., Patton, D. R., ...
Galaxy groups likely to be virialized are identified within the CNOC2 intermediate redshift galaxy survey using an iterative method. The number-velocity dispersion relation is in agreement with the...
Yee, H. K. C., Morris, S. L., Lin, H., Carlberg, R. G., Hall, P. B., Sawicki, M., ...
The Canadian Network for Observational Cosmology (CNOC2) Field Galaxy Redshift Survey is a spectroscopic/photometric survey of faint galaxies over 1.5 square degrees of sky with a nominal...
Engineering coercivity in epitaxially grown (110) films of DyFe2–YFe2 superlattices (2000)
Sawicki, M., Bowden, G.J., Rainford, B.D., Beaujour, J.M.L., Ward, R.C.C., ...
Molecular beam epitaxial methods have been used to grow single crystal Laves phase DyFe2–YFe2 superlattice samples with a (110) growth direction. It is shown that it is possible, in principle, to...
Kossacki, P., Ferrand, D., Arnoult, A., Cibert, J., Tatarenko, S., Wasiela, A., ...
Photoluminescence magnetospectroscopy is employed to examine the low-temperature magnetic phase that is induced by the carrier-mediated ferromagnetic exchange interaction in modulation-doped...
Galaxy Clustering Evolution in the CNOC2 High-Luminosity Sample (1999)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall, P. B., Patton, D., ...
The redshift evolution of the galaxy two-point correlation function is a fundamental cosmological statistic. To identify similar galaxy populations at different redshifts, we select a strict...
Galaxy Clustering in the CNOC2 Redshift Survey (1999)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Hall, P., Patton, D., ...
The correlation evolution of a high luminosity subsample of the CNOC2 redshift survey is examined. The sample is restricted to galaxies for which the k corrected and evolution corrected R luminosity...
The CNOC2 Field Galaxy Luminosity Function I: A Description of Luminosity Function Evolution (1999)
Lin, H., Yee, H. K. C., Carlberg, R. G., Morris, S. L., Sawicki, M., Patton, D. R., ...
We examine the evolution of the galaxy luminosity function (LF) using a sample of over 2000 galaxies, with 0.12 < z < 0.55 and 17.0 < Rc < 21.5, drawn from the Canadian Network for Observational...
The CNOC2 field galaxy redshift survey (1999)
Carlberg, R. G., Yee, H. K. C., Morris, S. L., Lin, H., Sawicki, M., Wirth, G., ...
The CNOC2 Field Galaxy Redshift Survey (1998)
Carlberg, R. G., Yee, H. K. C., Morris, S. L, Lin, H., Sawicki, M., Wirth, G., ...
The CNOC2 field galaxy redshift survey is designed to provide measurements of the evolution of galaxies and their clustering over the redshift range 0 to 0.7. The sample is spread over four sky...
The Omega_M-Omega_Lambda Constraint from CNOC Clusters (1998)
Carlberg, R. G., Yee, H. K. C., Ellingson, E., Morris, S. L., Lin, H., Sawicki, M., ...
The CNOC redshift survey of galaxy clusters measures Omega_M from Omega_e(z)= M/L x j/\rho_c which can be applied on a cluster-by-cluster basis. The mass-to-light ratios, M/L, are estimated from rich...
Results on Galaxy Evolution from the CNOC2 Field Galaxy Redshift Survey (1997)
Lin, H., Yee, H. K. C., Carlberg, R. G., Morris, S. L., Sawicki, M., Patton, D. R., ...
The CNOC2 Field Galaxy Redshift Survey presently contains some 5000 galaxy redshifts, plus extensive UBgRI photometry, and is the largest galaxy sample at moderate redshifts 0.1 < z < 0.6. Here we...
Brunthaler, G., Dietl, T., Prinz, A., Sawicki, M., Jaroszynski, J., Glod, P., ...
A metal-insulator transition was induced by in-plane magnetic fields up to 27 T in homogeneously Sb-doped Si/SiGe superlattice structures. The localisation is not observed for perpendicular magnetic...
Omega_M and the CNOC Surveys (1997)
Carlberg, R. G., Yee, H. K. C., Lin, H., Sawicki, M., Shepherd, C. W., Ellingson, E., ...
The CNOC1 cluster survey measures Omega_M via Oort's method, Omega_M= M/L x j/rho_c, where M/L is the field mass-to-light ratio, j is the field luminosity density and rho_c is the closure density. A...
Parity Transformation in the Front Form (1993)
By considering the parity-transformation properties of the $(1/2,\,0)$ and $(0,\,1/2)$ fields in the {\it front form} we find ourselves forced to study the front-form evolution both along $x^+$ and...