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Temperature dependence of the electron spin $g$ factors in bulk CdTe and InP are calculated and compared with experiment. It is assumed that the only modification of the band structure related to temperature is a dilatation change in the…

Materials Science · Physics 2015-05-30 Pawel Pfeffer , Wlodek Zawadzki

Very high precision measurements of the electron Lande g-factor in GaAs are presented using spin-quantum beat spectroscopy at low excitation densities and temperatures ranging from 2.6 to 300 K. In colligation with available data for the…

Materials Science · Physics 2009-05-26 J. Hübner , S. Döhrmann , D. Hägele , M. Oestreich

We propose that phonons coupled to electrons play an important role in both the fundamental phenomenology of electron spin resonance as well as the interpretation of such measurements. By including spin-dependent electron-phonon…

Materials Science · Physics 2025-09-10 Sebastian Kalhöfer

The temperature dependence of electron spin coherence in singly negatively charged (In,Ga)As/GaAs quantum dots is studied by time-resolved Faraday rotation. The decoherence time T2 is constant on a microsecond scale for temperatures below…

Materials Science · Physics 2008-07-14 F. G. G. Hernandez , A. Greilich , F. Brito , M. Wiemann , D. R. Yakovlev , D. Reuter , A. D. Wieck , M. Bayer

The coherent spin dynamics of electrons and holes in CsPbI3 perovskite nanocrystals in a glass matrix are studied by the time-resolved Faraday ellipticity technique in magnetic fields up to 430 mT across a temperature range from 6 K up to…

We have studied the spin dynamics of a high-mobility two-dimensional electron system in a GaAs/Al_{0.3}Ga_{0.7}As single quantum well by time-resolved Faraday rotation and time-resolved Kerr rotation in dependence on the initial degree of…

Materials Science · Physics 2011-11-10 D. Stich , J. Zhou , T. Korn , R. Schulz , D. Schuh , W. Wegscheider , M. W. Wu , C. Schüller

We observe the noise spectrum of electron spins in bulk GaAs by Faraday rotation noise spectroscopy. The experimental technique enables the undisturbed measurement of the electron spin dynamics in semiconductors. We measure exemplarily the…

Other Condensed Matter · Physics 2009-11-11 M. Oestreich , M. Roemer , R. J. Haug , D. Haegele

We address the temperature influence on the precessional motion of electron spins under transverse magnetic field, studied in a GaAs/AlGaAs triple quantum wells, using pump-probe Kerr rotation. In the presence of an applied in-plane…

Mesoscale and Nanoscale Physics · Physics 2018-05-18 S. Ullah , F. C. D. Moraes , G. M. Gusev , A. K. Bakarov , F. G. G. Hernandez

The nonlocal spin resistance is measured as a function of temperature in a Fe/GaAs spin-injection device. For nonannealed samples that show minority-spin injection, the spin resistance is observed up to room temperature and decays…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 G. Salis , A. Fuhrer , R. R. Schlittler , L. Gross , S. F. Alvarado

We report on the modification of the g-factor by an in-plane electric field in an In$_{0.031}$Ga$_{0.969}$As epilayer. We performed external magnetic field scans of the Kerr rotation of the InGaAs film in order to independently determine…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 M. Luengo-Kovac , M. Macmahon , S. Huang , R. S. Goldman , V. Sih

Electrically detected electron spin resonance (EDESR) signals were acquired as a function of temperature in the 0.3-4.2 K temperature range in a AlGaAs/GaAs multiple quantum well sample at the filling factor at 5.7 T. In the particular…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Eugene Olshanetsky , Manyam Pilla , Joshua D. Caldwell , Shu-chen Liu , Clifford R. Bowers , Jerry A. Simmons , John L. Reno

Temperature and carrier density dependent spin dynamics for GaAs/AlGaAs quantum wells (QWs) with different structural symmetry has been studied by using time-resolved Kerr rotation technique. The spin relaxation time is measured to be much…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 L. F. Han , Y. G. Zhu , X. H. Zhang , P. H. Tan , H. Q. Ni , Z. C. Niu

We report on both experimental and theoretical study of conduction-electron spin polarization dynamics achieved by pulsed optical pumping at room temperature in GaAs(1-x)N(x) alloys with a small nitrogen content (x = 2.1, 2.7, 3.4%). It is…

Materials Science · Physics 2015-06-25 V. K. Kalevich , A. Yu. Shiryaev , E. L. Ivchenko , A. Yu. Egorov , L. Lombez , D. Lagarde , X. Marie , T. Amand

We report a comprehensive study of stochastic electron spin fluctuations -- spin noise -- in lightly doped ($n$-type) bulk GaAs, which are measured using sensitive optical magnetometry based on off-resonant Faraday rotation. Frequency…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 S. A. Crooker , L. Cheng , D. L. Smith

The influence of temperature and transport conditions on the electron spin relaxation in lightly doped n-type GaAs semiconductors is investigated. A Monte Carlo approach is used to simulate electron transport, including the evolution of…

Statistical Mechanics · Physics 2011-12-20 Stefano Spezia , Dominique Persano Adorno , Nicola Pizzolato , Bernardo Spagnolo

The electrical and thermo-electrical transport effects of the TaAs$_2$ semimetal were measured in a magnetic field applied along [-2 0 1] direction. The resulting field dependences of the resistivity as well as the Hall, Seebeck and Nernst…

The temperature-dependent electron spin relaxation of positively charged excitons in a single InAs quantum dot (QD) was measured by time-resolved photoluminescence spectroscopy at zero applied magnetic fields. The experimental results show…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 X. M. Dou , B. Q. Sun , D. S. Jiang , H. Q. Ni , Z. C. Niu

The temperature dependence of electron spin resonance (ESR) was studied in $EuFe_{2-x}Co_{x}As_2 $ (x = 0.0, 0.067, 0.1, 0.2, 0.25, 0.285, 0.35, 0.4 and 0.5). The ESR spectrum of all the samples indicates that the g factor and peak-to-peak…

Superconductivity · Physics 2009-08-04 J. J. Ying , T. Wu , Q. J. Zheng , Y. He , G. Wu , Q. J. Li , Y. J. Yan , Y. L. Xie , R. H. Liu , X. F. Wang , X. H. Chen

We investigate the temperature dependence of the coefficients in the Landau-Lifshitz-Gilbert equation in ferromagnetic GaMnAs by employing the Zener model. We first calculate the hole spin relaxation time based on the microscopic kinetic…

Materials Science · Physics 2012-02-10 K. Shen , M. W. Wu

The temperature dependence of phonon-induced resistance oscillations has been investigated in two-dimensional electron system with moderate mobility at large filling factors at temperature range T = 7.4 - 25.4 K. The amplitude of…

Mesoscale and Nanoscale Physics · Physics 2010-01-18 A. A. Bykov , A. V. Goran
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