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Here, we demonstrate an interplay between superconducting fluctuations and electron-electron interaction (EEI) by low temperature magnetotransport measurements for a set of 2D disordered TiN thin films. While cooling down the sample, a…

Superconductivity · Physics 2023-01-31 Sachin Yadav , Vinay Kaushik , M. P. Saravanan , Sangeeta Sahoo

Electron-defect ($e$-d) interactions govern charge carrier dynamics at low temperature, where they limit the carrier mobility and give rise to phenomena of broad relevance in condensed matter physics. Ab initio calculations of $e$-d…

Materials Science · Physics 2020-03-19 I-Te Lu , Jin-Jian Zhou , Marco Bernardi

We study the leading low temperature dependence of magnetic susceptibility of one-dimensional electrons with fixed total number of particles at the magnetic fields equal to zero temperature critical values where magnetic field induces…

Strongly Correlated Electrons · Physics 2014-03-26 Temo Vekua

Electron heating in an ultracold neutral plasma is modeled using classical molecular dynamics simulations in the presence of an externally applied magnetic field. A sufficiently strong magnetic field is found to reduce disorder induced…

Plasma Physics · Physics 2018-02-14 Sanat Kumar Tiwari , Scott D. Baalrud

The differential cross section and polarization observables for the elastic reaction induced by deuteron scattering off electrons at rest are calculated in the one-photon-exchange (Born) approximation. Specific attention is given to the…

Nuclear Theory · Physics 2023-12-06 G. I. Gakh , M. I. Konchatni , N. P. Merenkov , E. Tomasi-Gustafsson , A. G. Gakh

Contribution to thermal conductivity from conduction electron scattering on crystal field magnetic excitations is calculated and analyzed for normal rare-earth inter-metallic paramagnets. It is shown that in temperatures much lower than…

Strongly Correlated Electrons · Physics 2018-08-24 Aleksandra E. Szukiel

Spin relaxation between the two lowest-lying spin-states has been studied in the S=4 single molecule magnet Ni$_4$ under steady state conditions of low amplitude and continuous microwave irradiation. The relaxation rate was determined as a…

Mesoscale and Nanoscale Physics · Physics 2008-07-22 G. de Loubens , D. A. Garanin , C. C. Beedle , D. N. Hendrickson , A. D. Kent

Decoherence of a localized electron spin in a solid state material (the ``central spin'' problem) at low temperature is believed to be dominated by interactions with nuclear spins in the lattice. This decoherence is partially suppressed…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 W. M. Witzel , S. Das Sarma

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

We present an accurate quantum mechanical study of molecule-molecule collisions in the presence of a magnetic field. The work focusses on the analysis of elastic scattering and spin relaxation in collisions of O2(3Sigma_g) molecules at cold…

Atomic Physics · Physics 2012-02-06 T. V. Tscherbul , Yu. V. Suleimanov , V. Aquilanti , R. V. Krems

Consider a free electron gas in a confining potential and a magnetic field in arbitrary dimensions. If this gas is in thermal equilibrium with a reservoir at temperature $T >0$, one can study its orbital magnetic response (omitting the…

Mathematical Physics · Physics 2009-10-31 M. Combescure , D. Robert

The observation of coherent quantum transport phenomena in metals and semiconductors is limited by the eventual loss of phase coherence of the conducting electrons. We use the weak localization effect to measure the low-temperature…

Mesoscale and Nanoscale Physics · Physics 2010-08-27 M. Eshkol , E. Eisenberg , M. Karpovski , A. Palevski

The current theoretical and experimental situation is reviewed for low-dimensional (layered and chain-like) insulating systems. Such systems possess a low magnetic transition temperature $T_M$ and pronounced short-range magnetic order above…

Strongly Correlated Electrons · Physics 2021-02-17 A. A. Katanin , V. Yu. Irkhin

We investigate pure dephasing decoherence (free induction decay and spin echo) of a spin qubit interacting with a nuclear spin bath. While for infinite magnetic field B the only decoherence mechanism is spectral diffusion due to dipolar…

Mesoscale and Nanoscale Physics · Physics 2009-02-03 L. Cywinski , W. M. Witzel , S. Das Sarma

We studied electrical transport in magnetic semiconductors, which is determined by scattering of free carriers off localized magnetic moments. We calculated the scattering time and the mobility of the majority and minority-spin carriers…

Materials Science · Physics 2007-05-23 M. Foygel A. G. Petukhov

The low temperature relaxation of the magnetization in magnetic molecular solids such as Fe$_8$ is studied using Monte Carlo simulations. A set of rate equations is developed to understand the simulations, and the results are compared. The…

Statistical Mechanics · Physics 2015-10-14 Avinash Vijayaraghavan , Anupam Garg

The effect of the electron temperature on both the light absorption and the scattering by metal nanoparticles (MNs) with excitation of the surface plasmon electron vibrations is studied in the framework of the kinetic theory. The formulae…

Mesoscale and Nanoscale Physics · Physics 2013-11-25 N. I. Grigorchuk

We study elastic collisions in an optically trapped spin mixture of fermionic lithium atoms in the presence of magnetic fields up to 1.5kG by measuring evaporative loss. Our experiments confirm the expected magnetic tunability of the…

Atomic Physics · Physics 2007-05-23 S. Jochim , M. Bartenstein , G. Hendl , J. Hecker Denschlag , R. Grimm , A. Mosk , M. Weidemüller

A density functional theory based two-terminal scattering formalism that includes spin-orbit coupling and spin non-collinearity is described. An implementation using tight-binding muffin-tin orbitals combined with extensive use of sparse…

Mesoscale and Nanoscale Physics · Physics 2018-06-15 Anton A. Starikov , Yi Liu , Zhe Yuan , Paul J. Kelly

Electron spin dynamics are studied in Ga-doped ZnO single crystals by time-resolved Faraday and Kerr rotation spectroscopies. Long-lived spin coherence with two dephasing processes is discovered where the characteristic time is up to 5.2 ns…

Chemical Physics · Physics 2021-05-05 Zhen Wu , Meizhen Jiang , Jiaxing Guo , Qing Yang , Yuanyuan Zhang , Tianqing Jia , Zhenrong Sun , Donghai Feng
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