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A realistic pseudopotential model is introduced to investigate the phonon-induced spin relaxation of conduction electrons in bulk silicon. We find a surprisingly subtle interference of the Elliott and Yafet processes affecting the spin…

Materials Science · Physics 2010-01-05 J. L. Cheng , M. W. Wu , J. Fabian

The hot-electron vortex flow instability in superconducting films in magnetic field $B$ at substrate temperature $T_0 \ll T_c$ is theoretically considered in the presence of pinning. The magnetic field dependence of the instability critical…

Superconductivity · Physics 2017-05-23 Valerij A. Shklovskij

When a charge current is applied to a junction comprising two different conductors, its temperature increases or decreases depending on the direction of the charge current. This phenomenon is called the Peltier effect, which is used in…

Mesoscale and Nanoscale Physics · Physics 2016-12-30 Shunsuke Daimon , Ryo Iguchi , Tomosato Hioki , Eiji Saitoh , Ken-ichi Uchida

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

We present a broadband ferromagnetic resonance study of the Gilbert damping enhancement ($\Delta \alpha$) due to spin pumping in NiFe/Pt bilayers. The bilayers, which have negligible interfacial spin memory loss, are studied as a function…

Mesoscale and Nanoscale Physics · Physics 2021-06-09 Claudio Gonzalez-Fuentes , Randy K. Dumas , Bernat Bozzo , Alberto Pomar , Ricardo Henriquez , Calos García

We theoretically study the conditions under which a spin Nernst effect - a transverse spin current induced by an applied temperature gradient - can occur in a canted antiferromagnetic insulator, such as ${\rm LaFeO_3}$ and other materials…

Mesoscale and Nanoscale Physics · Physics 2024-05-24 Wesley Roberts , Bowen Ma , Martin Rodriguez-Vega , Gregory A. Fiete

We study the temperature dependence of the conductivity of the 2D electronic solid. In realistic samples, a domain structure forms in the solid and each domain randomly orients in the absence of the in-plane field. At higher temperature,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Shi-Jie Yang , Yue Yu

We show that the electric field-induced thermal asymmetry between the electron and lattice systems in pure silicon substantially impacts the identity of the dominant spin relaxation mechanism. Comparison of empirical results from…

Materials Science · Physics 2012-04-10 Jing Li , Lan Qing , Hanan Dery , Ian Appelbaum

We investigated the voltages obtained in a thin Pt strip on a Permalloy film which was subject to in-plane temperature gradients and magnetic fields. The voltages detected by thin W-tips or bond wires showed a purely symmetric effect with…

We identify and investigate thermal spin transport phenomena in sputter-deposited Pt/NiFe$_2$O$_{\textrm{4-x}}$ ($4\geq x \geq 0$) bilayers. We separate the voltage generated by the spin Seebeck effect from the anomalous Nernst effect…

In valleytronic devices, the valley transport of electrons can carry not only charge but also spin angular momentum (SAM) and orbital angular momentum (OAM). However, investigations on thermoelectric transport of OAM manipulated by valley…

Computational Physics · Physics 2024-12-11 Shilei Ji , Jianping Yang , Li Gao , Xing'ao Li

An experimental demonstration of electrical detection of coherent spin motion of weakly coupled, localized electron spins in thin Fullerene C60 films at room temperature is presented. Pulsed electrically detected magnetic resonance…

Other Condensed Matter · Physics 2009-11-13 W. Harneit , C. Boehme , S. Schaefer , K. Huebener , K. Fostiropoulos , K. Lips

We present a theoretical description and numerical simulations of the superconducting transition in hybrid structures including strong spin-orbit interactions. The spin-orbit coupling is taken to be of Rashba type for concreteness, and we…

Superconductivity · Physics 2018-03-07 Haakon T. Simensen , Jacob Linder

Recent discovery of 2D van der Waals (vdW) magnetic materials has spurred progress in developing advanced spintronic devices. A central challenge lies in enhancing the spin-conversion efficiency for building spin-logic or spin-memory…

Materials Science · Physics 2023-08-30 Shuhan Liu , Shaojie Hu , Xiaomin Cui , Takashi Kimura

Spin-orbit coupling provides a versatile tool to generate and to manipulate the spin degree of freedom in low-dimensional semiconductor structures. The spin Hall effect, where an electrical current drives a transverse spin current and…

Spin transport driven by the temperature gradient in ferromagnetic metals is studied based on a microscopic theory. It is shown that the temperature gradient works as an effective field equivalent to the electric field as for both the spin…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Yuu Takezoe , Kazuhiro Hosono , Akihito Takeuchi , Gen Tatara

The rapidly evolving utilization of spin Hall effect (SHE) arising from spin-orbit coupling in 5d transition metals and alloys have made giant strides in the development of designing low-power, robust and non-volatile magnetic memory.…

Zinc oxide is a wide-bandgap semiconductor which is considered a potential candidate for fabricating next-generation transparent spintronic devices. However, before this can be practically achieved, a thorough, scientific understanding of…

Materials Science · Physics 2015-06-22 M. C. Prestgard , G. Siegel , R. Roundy , M. Raikh , A. Tiwari

We investigate theoretically the Seebeck effect in materials close to a ferromagnetic quantum critical point to explain anomalous behaviour at low temperatures. It is found that the main effect of spin fluctuations is to enhance the…

Strongly Correlated Electrons · Physics 2015-05-13 Takuya Okabe

Designing new quantum materials with long-lived electron spin states urgently requires a general theoretical formalism and computational technique to reliably predict intrinsic spin relaxation times. We present a new, accurate and universal…

Materials Science · Physics 2020-07-01 Junqing Xu , Adela Habib , Sushant Kumar , Feng Wu , Ravishankar Sundararaman , Yuan Ping
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