Electron Landé g factor in GaAs–(Ga,Al)As quantum wells under applied magnetic fields: Effects of Dresselhaus spin splitting

2008 ◽  
Vol 104 (2) ◽  
pp. 023704 ◽  
Author(s):  
E. Reyes-Gómez ◽  
N. Porras-Montenegro ◽  
C. A. Perdomo-Leiva ◽  
H. S. Brandi ◽  
L. E. Oliveira
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
Spin Splitting ◽  
G Factor

Effect of the Dresselhaus spin splitting on the effective Landé g-factor in GaAs–(Ga,Al)As quantum wells under in-plane or growth-direction magnetic fields

2008 ◽  
Vol 39 (3-4) ◽  
pp. 390-393 ◽  
Author(s):  
N. Porras-Monenegro ◽  
C.A. Perdomo-Leiva ◽  
E. Reyes-Gómez ◽  
H.S. Brandi ◽  
L.E. Oliveira
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
Growth Direction ◽  
Spin Splitting ◽  
G Factor

Cyclotron effective mass and Landé g factor in GaAs–Ga1−xAlxAs quantum wells under growth-direction applied magnetic fields

2006 ◽  
Vol 99 (10) ◽  
pp. 104303 ◽  
Author(s):  
M. de Dios-Leyva ◽  
N. Porras-Montenegro ◽  
H. S. Brandi ◽  
L. E. Oliveira
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
Effective Mass ◽  
Growth Direction ◽  
G Factor

scholarly journals Zeeman splitting of electron spectrum in HgTe quantum wells near the Dirac point

2018 ◽  
Vol 52 (4) ◽  
pp. 482
Author(s):  
A.V. Germanenko ◽  
G.M. Minkov ◽  
A.A. Sherstobitov ◽  
O.E. Rut ◽  
S.A. Dvoretski ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Quantum Wells ◽  
Dirac Point ◽  
Zeeman Splitting ◽  
Density Range ◽  
G Factor ◽  
Inverted Spectrum ◽  
Shubnikov De Haas Oscillations ◽  
Interface Inversion ◽  
Inversion Asymmetry

AbstractThe Zeeman splitting of the conduction band in the HgTe quantum wells both with normal and inverted spectrum has been studied experimentally in a wide electron density range. The simultaneous analysis of the Shubnikov–de Haas oscillations in low magnetic fields at different tilt angles and of the shape of the oscillations in moderate magnetic fields gives a possibility to find the ratio of the Zeeman splitting to the orbital one and anisotropy of g -factor. It is shown that the ratios of the Zeeman splitting to the orbital one are close to each other for both types of structures, with a normal and inverted spectrum and they are close enough to the values calculated within kP method. In contrast, the values of g -factor anisotropy in the structures with normal and inverted spectra are strongly different and for both cases differ significantly from the calculated ones. We assume that such disagreement with calculations is a result of the interface inversion asymmetry in the HgTe quantum well, which is not taken into account in the kP calculations.

THE STUDY OF THE MAGNETIC BREAKDOWN EFFECT AS A FUNCTION OF ANGLE IN THE ORGANIC CONDUCTOR K- (BEDT-TTF)2Cu(NCS)2 IN HIGH MAGNETIC FIELDS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3355-3359
Author(s):  
I. MIHUT ◽  
C. C. AGOSTA ◽  
C. H. MIELKE ◽  
M. TOKOMOTO
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Spin Splitting ◽  
High Magnetic Fields ◽  
Organic Conductor ◽  
Cross Sectional ◽  
Tank Circuit ◽  
Quantum Oscillations ◽  
Magnetic Breakdown ◽  
Splitting Factor

The magnetic breakdown effect can be seen by the growth of new frequencies in the quantum oscillations in clean metals as a function of magnetic field. We have studied the variation of the amplitudes in the quantum oscillations in the resistance (the Shubnikov-de Haas effect) as a function of angle in the quasi-two dimensional-organic conductor κ-(BEDT-TTF)2Cu(NCS)2. The measurements were made by means of a radio frequency (rf) tank circuit (~ 50 MHz) at very high magnetic fields(50T-60T) and low temperature(500 mK). The geometry of the rf excitation we used excited in-plane currents, and therefore we measured the in-plane resistivity. In contrast to conventional transport measurements that measure the inter-plane resistivity, the in-plane resistivity is dominated by the magnetic breakdown frequencies. As a result we measured much higher breakdown frequency amplitudes than conventional transport experiments. As is expected, the angular dependence of the Shubnikov-de Haas frequencies have a 1/cosθ behavior. This is due to the change of the cross sectional area of the tubular Fermi surface as the angle with respect to the magnetic field is changed. The amplitude of the oscillations changes due to the spin splitting factor which takes into account the ratio between the spin splitting and the energy spacing of the Landau levels which also has 1/cosθ behavior. We show that our data agree with the semi-classical theory (Lifshitz-Kosevich formula).

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