Fermi-liquid anomaly of the concentration dependence of the g-factor of the conduction electrons in a semiconductor with hybridized impurity states

2009 ◽  
Vol 35 (2) ◽  
pp. 146-148 ◽  
Author(s):  
V. I. Okulov ◽  
E. A. Pamyatnykh ◽  
G. A. Al’shanskiĭ
Keyword(s):  
Concentration Dependence ◽  
Fermi Liquid ◽  
Impurity States ◽  
G Factor ◽  
Conduction Electrons

VARIATIONAL THEORY OF CORRELATED FERMI-LIQUID STATE IN THE KONDO LATTICE MODEL

1991 ◽  
Vol 05 (01n02) ◽  
pp. 289-308 ◽  
Author(s):  
Patrik FAZEKAS ◽  
Hiroyuki SHIBA
Keyword(s):  
Ground State ◽  
Lattice Model ◽  
Fermi Liquid ◽  
Kondo Lattice ◽  
Variational Theory ◽  
Conduction Electrons ◽  
Kondo Lattice Model ◽  
Liquid Type ◽  
Electron Clouds ◽  
Variational Wave

A variational wave function is constructed and studied for the spin-compensated Fermi-liquid-type ground state in the Kondo lattice model. The spins of the localized f-electrons are compensated by overlapping conduction-electron clouds. In accordance with Luttinger’s theorem, the volume enclosed by the Fermi surface corresponds to the total number of electrons, i.e., it includes the f-electrons as well as the conduction electrons. An approximate analytic treatment of the correlated heavy Fermi liquid is given by using the Gutzwiller approximation.

g-factor anisotropy of conduction electrons in InSb

1985 ◽  
Vol 31 (12) ◽  
pp. 7989-7994 ◽  
Author(s):  
Y.-F. Chen ◽  
M. Dobrowolska ◽  
J. K. Furdyna
Keyword(s):  
G Factor ◽  
Conduction Electrons

Current Induced G-Factor Shift in Modulation Doped Si Quantum Wells

2006 ◽  
Vol 984 ◽  
Author(s):  
Hans Malissa ◽  
Wolfgang Jantsch ◽  
Friedrich Schäffler ◽  
Zbyslaw Wilamowski
Keyword(s):  
Magnetic Field ◽  
Quantum Wells ◽  
Electric Current ◽  
Magnetic Field Direction ◽  
G Factor ◽  
Conduction Electrons ◽  
Simple Effect ◽  
Spin Resonance ◽  
The Magnetic Field ◽  
A Current

AbstractWe report the observation of a particularly simple effect of spin-orbit coupling which allows for efficient manipulation of spins by an electric current in semiconductor nanostructures. Passing an electric current density of j = 2.5 mA/cm through a modulation doped Si quantum well (density of 5 × 1011 cm-2) perpendicular to an in-plane magnetic field, we observe a shift of the spin resonance of the conduction electrons (CESR) by about 0.1 mT. This shift reverses sign when we invert (i) the current direction, (ii) the magnetic field direction and it vanishes for perpendicular magnetic field. We show that this current-induced shift in g-factor, i.e., its dependence on current and carrier density, its temperature dependence and its anisotropy can be consistently and quantitatively explained in terms of the Bychkov-Rashba coefficient determined earlier from the CESR broadening and the g-factor anisotropy [1]. Other sources of magnetic field (e.g. the Oersted effect) are negligible. This effect can be utilized for g-factor tuning, and thus for local spin manipulation: passing a current through some part of a sample may be utilized to bring those electrons into resonance with a microwave field. These spins are thus excited to Rabi oscillations and, using current pulses of suitable duration, π rotations (or by any other angle) can be achieved.

SUPPRESSION OF THE FERROMAGNETIC STATE BY DISORDER IN THE KONDO LATTICE

1992 ◽  
Vol 06 (21) ◽  
pp. 1329-1334 ◽  
Author(s):  
M. CRIŞAN ◽  
C. POPOVICIU
Keyword(s):  
Ground State ◽  
Fermi Liquid ◽  
Ferromagnetic State ◽  
Kondo Lattice ◽  
Spin Fluctuations ◽  
Low Concentration ◽  
Conduction Electrons ◽  
Ferromagnetic Ground State

The ferromagnetic ground state of a Kondo lattice with a low concentration of conduction electrons is ferromagnetic. Assuming the existence of disorder in the Fermi liquid of the conduction electrons we showed that the ferromagnetic state can be suppressed by the effect of the spin fluctuations of the disordered Fermi liquid.

LOCAL IMPURITY STATES IN ANTIFERROMAGNETIC Cr-ALLOYS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 638-643 ◽  
Author(s):  
V.YU. GALKIN
Keyword(s):  
Low Temperatures ◽  
Energy Gap ◽  
Density Wave ◽  
Spin Density Wave ◽  
Resonant Scattering ◽  
Resonance Scattering ◽  
Residual Resistivity ◽  
Impurity States ◽  
Conduction Electrons ◽  
Temperature Resistivity

The concept of local impurity states within the energy gap of a spin-density-wave (SDW) system is introduced. It is shown that resonant scattering of conduction electrons at these states may lead to greatly enhanced low-temperature resistivity. This impurity resonance scattering (IRS) model is employed to explain the variation of residual resistivity and temperature dependence of resistivity at low temperatures of Cr-Fe and Cr-Si systems on V and Mn doping and application of high pressure.

Temperature and donor concentration dependence of the conduction electron Lande g-factor in silicon

2013 ◽  
Author(s):  
Anton A. Konakov ◽  
Alexander A. Ezhevskii ◽  
Andrey V. Soukhorukov ◽  
Davud V. Guseinov ◽  
Sergey A. Popkov ◽  
...  
Keyword(s):  
Concentration Dependence ◽  
Conduction Electron ◽  
Donor Concentration ◽  
G Factor

g-factor of conduction electrons in HgTe

1969 ◽  
Vol 30 (1) ◽  
pp. 14-15 ◽  
Author(s):  
V.I. Ivanov-Omski ◽  
B.T. Kolomiets ◽  
V.M. Melnik
Keyword(s):  
G Factor ◽  
Conduction Electrons
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