Conclusive Evidence for Impurity Band Conduction in Metallic Ga$_{1-x}$Mn$_{x}$As

2:30 PM–5:30 PM, Wednesday, March 7, 2007
Colorado Convention Center Room: Korbel 3C

Sponsoring Units: GMAG DMP FIAP
Chair: Andre Petukhov, South Dakota School of Mines and Technology

Abstract ID: BAPS.2007.MAR.S12.3

Abstract: S12.00003 : Conclusive Evidence for Impurity Band Conduction in Metallic Ga$_{1-x}$Mn$_{x}$As

3:18 PM–3:30 PM

Preview Abstract Abstract

Authors:

K.S. Burch
(MPA-CINT, Los Alamos National Laboratory)

D.B. Shrekenhamer
(Department of Physics, University of California, San Diego)

E.J. Singley
(Department of Physics, California State University, East Bay)

J. Stephens
(Center for Spintronics and Quantum Computation, University of California, Santa Barbara)

B.L. Sheu
(Department of Physics and Materials Research Institute, The Pennsylvania State University)

R.K. Kawakami
(Department of Physics, University of California, Riverside)

D.D. Awschalom
(Center for Spintronics and Quantum Computation, University of California, Santa Barbara)

N. Samarth
(Department of Physics and Materials Research Institute, The Pennsylvania State University)

P. Schiffer
(Department of Physics and Materials Research Institute, The Pennsylvania State University)

D.N. Basov
(Department of Physics, University of California, San Diego)

The electronic structure and carrier dynamics of the dilute magnetic semiconductor Ga$_{1-x}$Mn$_{x}$As are studied via optical spectroscopy. We focus on the changes induced by annealing the samples, which is known to result in a large increase in the critical temperature. This study provides conclusive evidence that the Fermi energy ($E_{F}$) lies in a metallic impurity band.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.MAR.S12.3

About APS

The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.

Headquarters 1 Physics Ellipse, College Park, MD 20740-3844 (301) 209-3200
Editorial Office 100 Motor Pkwy, Suite 110, Hauppauge, NY 11788 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700

Bulletin of the American Physical Society

2007 APS March Meeting

Volume 52, Number 1

Monday–Friday, March 5–9, 2007; Denver, Colorado

Session S12: Focus Session: III-Mn-V Ferromagnetic Semiconductors

Abstract: S12.00003 : Conclusive Evidence for Impurity Band Conduction in Metallic Ga$_{1-x}$Mn$_{x}$As

Authors:

Follow Us

Engage

My APS

Information for

About APS