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相关论文: Spin relaxation through Kondo scattering in Cu/Py …

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We calculate the dynamical spin response of Kondo impurity and Kondo lattice systems within a semiphenomenological Fermi liquid description, at low temperatures $T<T_K$, the Kondo temperature, and low magnetic fields $B \ll k_B T_K/g\mu_B$.…

强关联电子 · 物理学 2009-11-13 Elihu Abrahams , Peter Wölfle

We observe a strong correlation between magnetization relaxation and electrical resistivity in thin Permalloy (Ni$_{81}$Fe$_{19}$, ``Py'') films. Electron scattering rates in the films were affected by varying film thickness and deposition…

材料科学 · 物理学 2007-05-23 S. Ingvarsson , L. Ritchie , X. Y. Liu , Gang Xiao , J. C. Slonczewski , P. L. Trouilloud , R. H. Koch

We analyze the temperature dependence of the electron spin resonance linewidth above the critical region in exchange-coupled magnetic insulators. The focus is on separating the contributions to the linewidth from spin-spin interactions,…

材料科学 · 物理学 2017-06-27 M. Acikgoz , D. L. Huber

We present a generally applicable parameter-free first-principles method to determine electronic spin relaxation times and apply it to the technologically important group-IV materials silicon, diamond and graphite. We concentrate on the…

介观与纳米尺度物理 · 物理学 2012-09-19 Oscar D. Restrepo , Wolfgang Windl

Low-temperature electron spin relaxation is studied by the optical orientation method in bulk n-GaAs with donor concentrations from 10^14 cm^{-3} to 5x10^17 cm^{-3}. A peculiarity related to the metal-to-insulator transition (MIT) is…

Based on a Monte Carlo method, we investigate the influence of transport conditions on the electron spin relaxation in GaAs. The decay of initial electron spin polarization is calculated as a function of distance under the presence of…

介观与纳米尺度物理 · 物理学 2009-11-10 E. A. Barry , A. A. Kiselev , K. W. Kim

We simulate spin polarized transport of electrons along a silicon nanowire and along a silicon two dimensional channel. Spin density matrix calculations are used along with the semi-classical Monte Carlo approach to model spin evolution…

介观与纳米尺度物理 · 物理学 2011-05-03 Ashish Kumar , Bahniman Ghosh

The concept of anisotropy of spin relaxation in non-magnetic metals with respect to the spin direction of the injected electrons relative to the crystal orientation is introduced. The effect is related to an anisotropy of the Elliott-Yafet…

The spin relaxation of a two-dimensional electron system (2DES) formed in a symmetric quantum well is studied theoretically when the quantum well is parallel to the (110) plane of the zinc-blende structure, the spin polarization is…

介观与纳米尺度物理 · 物理学 2014-02-28 Hiroshi Akera , Hidekatsu Suzuura , Yoshiyuki Egami

The differences between spin relaxation in graphene and in other materials are discussed. For relaxation by scattering processes, the Elliot-Yafet mechanism, the relation between the spin and the momentum scattering times acquires a…

材料科学 · 物理学 2012-06-25 H. Ochoa , A. H. Castro Neto , F. Guinea

Inelastic neutron scattering measurements have been performed on single crystals of the heavy fermion compound Ce$_{0.925}$La$_{0.075}$Ru$_{2}$Si$_{2}$ in broad energy [0.1, 9.5 meV] and temperature [40 mK, 294 K] ranges in order to address…

强关联电子 · 物理学 2007-05-23 W. Knafo , S. Raymond , J. Flouquet , B. Fåk , M. A. Adams , P. Haen , F. Lapierre , S. Yates , P. Lejay

In graphene, out-of-plane (flexural) vibrations and static ripples imposed by the substrate relax the electron spin, intrinsically protected by mirror symmetry. We calculate the relaxation times in different scenarios, accounting for all…

介观与纳米尺度物理 · 物理学 2017-05-08 I. M. Vicent , H. Ochoa , F. Guinea

We conduct an experimental investigation of temperature dependence of spin diffusion length in highly-doped n-type silicon by using a non-local 3-terminal method. Whereas an effect of spin drift is not ignorable to bias- and…

材料科学 · 物理学 2015-05-30 M. Kameno , E. Shikoh , T. Oikawa , T. Sasaki , T. Suzuki , Y. Suzuki , M. Shiraishi

We obtain explicit expressions for the correlation functions of transmission and reflection coefficients of coherent electronic waves propagating through a disordered quasi-one-dimensional medium with purely elastic diffusive scattering in…

凝聚态物理 · 物理学 2009-10-22 A. M. S. Macedo

We perform an analysis of the experimentally known temperature dependence of the staggered magnetization in the antiferromagnetic phase. This analysis allows us to put an upper limit on the unknown value of the spin wave velocity along the…

强关联电子 · 物理学 2009-08-02 Andrew Ong , Goetz S. Uhrig , Oleg P. Sushkov

The variety of the normal-state magnetic properties of cuprate high-Tc superconductors is interpreted based on the self-consistent solution of the self-energy equations for the two-dimensional t-J model. The observed variations of the spin…

强关联电子 · 物理学 2009-11-07 A. Sherman , M. Schreiber

The spin-transfer in biased disordered ferromagnet (F) - normal metal (N) systems is calculated by the diffusion equation. For F1-N2-F2 and N1-F1-N2-F2-N3 spin valves, the effect of spin-flip processes in the normal metal and ferromagnet…

介观与纳米尺度物理 · 物理学 2009-11-07 Alexey Kovalev , Arne Brataas , Gerrit E. W. Bauer

Through the theoretical study of electron spin lifetime in the 2DEG of doped Si, we highlight a dominant spin relaxation mechanism induced by the impurity central-cell potential near an interface via intervalley electron scattering. At low…

介观与纳米尺度物理 · 物理学 2017-01-17 Yang Song , S. Das Sarma

We have shown that in narrow 2D semiconductor channels the D'yakonov-Perel' spin relaxation rate is strongly reduced. This relaxation slowdown appears in special waveguide diffusion modes which determine the propagation of spin density in…

介观与纳米尺度物理 · 物理学 2009-10-31 A. G. Mal'shukov , K. A. Chao

We present measurements of magnetic field and frequency dependences of the low temperature (T = 1.8 K) AC-susceptibility, and temperature and field dependences of the longitudinal field positive muon spin relaxation ({\mu}SR) for…

强关联电子 · 物理学 2015-06-05 R. C. Johnson , B. Z. Malkin , J. S. Lord , S. R. Giblin , A. Amato , C. Baines , A. Lascialfari , B. Barbara , M. J. Graf
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