scholarly journals Effective mass suppression upon complete spin-polarization in an isotropic two-dimensional electron system

2009 ◽  
Vol 79 (19) ◽  
Author(s):  
T. Gokmen ◽  
Medini Padmanabhan ◽  
K. Vakili ◽  
E. Tutuc ◽  
M. Shayegan
Keyword(s):  
Effective Mass ◽  
Spin Polarization ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Dimensional Electron System

QUANTUM HALL EFFECT IN A MULTI-VALLEY TWO-DIMENSIONAL ELECTRON SYSTEM

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1388-1397 ◽  
Author(s):  
M. SHAYEGAN ◽  
E. P. DE POORTERE ◽  
O. GUNAWAN ◽  
Y. P. SHKOLNIKOV ◽  
E. TUTUC ◽  
...  
Keyword(s):  
Effective Mass ◽  
Quantum Hall ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Breaking Strain ◽  
G Factor ◽  
Dimensional Electron System ◽  
Fermi Contour ◽  
The Rich

Two-dimensional electrons in an AlAs quantum well occupy multiple conduction-band minima at the X-points of the Brillouin zone. These valleys have large effective mass and g-factor compared to the standard GaAs electrons, and are highly anisotropic. With proper choice of well width and by applying symmetry-breaking strain in the plane, one can control the occupation of different valleys thus rendering a system with tuneable effective mass, g-factor, Fermi contour anisotropy, and valley degeneracy. Here we review some of the rich physics that this system has allowed us to explore.

scholarly journals PHOTO-EXCITED ZERO-RESISTANCE STATES IN THE GaAs/AlGaAs SYSTEM

2004 ◽  
Vol 18 (27n29) ◽  
pp. 3473-3480 ◽  
Author(s):  
R. G. MANI
Keyword(s):  
Effective Mass ◽  
Liquid Helium ◽  
High Mobility ◽  
Microwave Frequency ◽  
Electron System ◽  
Experimental Results ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Dimensional Electron System ◽  
Zero Resistance

The microwave-excited high mobility two-dimensional electron system exhibits, at liquid helium temperatures, vanishing resistance in the vicinity of B=[4/(4j+1)]Bf, where Bf=2πfm*/e, m* is an effective mass, e is the charge, and f is the microwave frequency. Here, we summarize some experimental results.

Resonant Rayleigh scattering as a probe of spin polarization in a two-dimensional electron system

2012 ◽  
Vol 85 (11) ◽  
Author(s):  
L. V. Kulik ◽  
K. Ovchinnikov ◽  
A. S. Zhuravlev ◽  
V. E. Bisti ◽  
I. V. Kukushkin ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Rayleigh Scattering ◽  
Electron System ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Dimensional Electron System
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