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Using a three-current model for heat, spin-up and spin-down electrons, the thermodynamics of irreversible processes predicts that a temperature gradient gives rise to a spin current under the conditions used to measure what is called the…

介观与纳米尺度物理 · 物理学 2010-11-11 Sylvain D. Brechet , Jean-Philippe Ansermet

The spin-Hall effect describes the interconversion of charge currents and spin currents, enabling highly efficient manipulation of magnetization for spintronics. Symmetry conditions generally restrict polarizations of these spin currents to…

Spin pumping refers to the microwave-driven spin current injection from a ferromagnet into the adjacent target material. We theoretically investigate the spin pumping into superconductors by fully taking account of impurity spin-orbit…

材料科学 · 物理学 2017-07-19 Masashi Inoue , Masanori Ichioka , Hiroto Adachi

We pursue the consequences of a theory in which the resonance peak observed in inelastic neutron scattering (INS) experiments on underdoped and optimally doped YBa$_2$Cu$_3$O$_{6+x}$ compounds arises from a spin-wave excitation. We find…

强关联电子 · 物理学 2009-10-31 Dirk K. Morr , David Pines

A novel process of spin conversion from a temperature gradient to a transverse voltage is addressed in this paper, viz. the anomalous Nernst effect (ANE) in a ferromagnetic metal. We report that an additional voltage is superposed on the…

材料科学 · 物理学 2018-04-12 M. Mizuguchi , K. Hasegawa , J. Ohe , M. Tsujikawa , M. Shirai , K. Takanashi

A comprehensive inelastic neutron scattering study of magnetic excitations in the near-optimally doped high-temperature superconductor ${\rm YBa_{2}Cu_{3}O_{6.85}}$ is presented. The spin correlations in the normal state are commensurate…

超导电性 · 物理学 2009-10-31 P. Bourges , Y. Sidis , H. F. Fong , L. P. Regnault , J. Bossy , A. Ivanov , B. Keimer

We study superconductivity in a normal metal, arising from effective electron-electron interactions mediated by spin-fluctuations in a neighboring antiferromagnetic insulator. Introducing a frustrating next-nearest neighbor interaction in a…

超导电性 · 物理学 2021-01-04 Eirik Erlandsen , Asle Sudbø

We study a system composed of a quantum dot in contact with ferromagnetic leads, held at different temperatures. Spin analogues to the thermopower and thermoelectric figures of merit are defined and studied as a function of junction…

介观与纳米尺度物理 · 物理学 2009-11-13 Y. Dubi , M. Di Ventra

Conversion of heat into a spin-current in electron doped silicon can offer a promising path for spin-caloritronics. Here we create an electron spin polarization in the conduction band of n-type silicon by producing a temperature gradient…

材料科学 · 物理学 2014-03-17 André Dankert , Saroj P. Dash

Electric generation of spin current via spin Hall effect is of great interest as it allows an efficient manipulation of magnetization in spintronic devices. Theoretically, spin current can be also created by a temperature gradient, which is…

Very recently large Nernst effect and Seebeck effect were observed above the superconducting transition temperature 2.3K in a heavy fermion superconductor CeCoIn_5. We shall interpret this large Nernst effect in terms of unconventional…

强关联电子 · 物理学 2009-11-10 Balázs Dóra , Kazumi Maki , Attila Virosztek , András Ványolos

The interplay of orbital and spin degrees of freedom is the fundamental characteristic in numerous condensed matter phenomena, including high temperature superconductivity, quantum spin liquids, and topological semimetals. In iron-based…

We explore the role of proximity-induced odd-frequency pairing in the thermoelectricity of a ferromagnet when coupled to a conventional $s$-wave spin-singlet superconductor through a spin-active interface. By varying both the polarization…

超导电性 · 物理学 2020-09-18 Paramita Dutta , Kauê R. Alves , Annica M. Black-Schaffer

In this paper, we present the theoretical predication of a thermospin Hall effect, in which a transverse spin current can be generated in semiconductors in the presence of spin-orbit coupling by a frequency-dependent longitudinal…

介观与纳米尺度物理 · 物理学 2008-02-05 Zhongshui Ma

The generation, manipulation and detection of spin-polarized electrons in nanostructures define the main challenges of spin-based electronics[1]. Amongst the different approaches for spin generation and manipulation, spin-orbit coupling,…

介观与纳米尺度物理 · 物理学 2009-11-11 Sergio O. Valenzuela , M. Tinkham

When a spin-splitting field is introduced to a thin film superconductor, the spin currents polarized along the field couples to energy currents that can only decay via inelastic scattering. We study spin and energy injection into such a…

介观与纳米尺度物理 · 物理学 2024-06-05 Lina Johnsen Kamra , Jacob Linder

We predict a supercurrent-driven N\'eel spin-orbit torque in a superconductor/$d$-wave altermagnet heterostructure, associated with the emergence of spin-triplet correlations. The effect can be understood as a consequence of the…

介观与纳米尺度物理 · 物理学 2026-04-15 Hamed Vakili , Moaz Ali , Igor Žutić , Alexey A. Kovalev

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…

介观与纳米尺度物理 · 物理学 2024-05-24 Wesley Roberts , Bowen Ma , Martin Rodriguez-Vega , Gregory A. Fiete

A theory of spin polarized tunneling spectroscopy based on a scattering theory is given for tunneling junctions between ferromagnets and d-wave superconductors. The spin filtering effect of an exchange field in the insulator is also…

超导电性 · 物理学 2009-10-31 S. Kashiwaya , Y. Tanaka , N. Yoshida , M. R. Beasley

Selective and large polarization of current injected into semiconductor (SC) is predicted in Ferromagnet (FM)/Quantum Dot (QD)/SC system by varying the gate voltage above the Kondo temperature. In addition, spin-dependent Kondo effect is…

介观与纳米尺度物理 · 物理学 2009-11-13 Zhen-Gang Zhu