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Related papers: Mechanisms of spin-dependent heat generation in sp…

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Using a macroscopic approach, we studied theoretically the heat generation due to spin transport in a typical spin valve with nonmagnetic spacer layer of finite thickness. Our analysis shows that the spin-dependent heat generation can also…

Materials Science · Physics 2017-01-17 Xiao-Xue Zhang , Pei-Song He , Bao-He Li , Yao-Hui Zhu

We study the concept of spin heat accumulation in excited spin valves, more precisely the effective electron temperature that may become spin dependent, both in linear response and far from equilibrium. A temperature or voltage gradient…

Mesoscale and Nanoscale Physics · Physics 2010-04-22 Tero T. Heikkila , Moosa Hatami , Gerrit E. W. Bauer

The interpretation of some recent measurements of spin-dependent voltage for which the electric conduction does not play a role rises some new fundamental questions about the effects of spin-dependent heat currents. A two spin-channel model…

Mesoscale and Nanoscale Physics · Physics 2012-07-16 J. -E. Wegrowe , H. -J. Drouhin , D. Lacour

Using a macroscopic approach, we studied theoretically the heat generation in a typical spin valve with nonmagnetic spacer layer of finite thickness. Our analysis shows that the spin-dependent heat generation cannot be interpreted as the…

Materials Science · Physics 2017-04-26 Xiao-Xue Zhang , Yao-Hui Zhu , Pei-Song He , Bao-He Li

Based on spin-dependent transport theory and thermodynamics, we develop a generalized theory of the Joule heating in the presence of a spin current. Along with the conventional Joule heating consisting of an electric current and…

Mesoscale and Nanoscale Physics · Physics 2014-12-03 Tomohiro Taniguchi , Wayne M. Saslow

The theoretical formula for the entropy production rate in the presence of spin current is derived using the spin-dependent transport equation and thermodynamics. This theory is applicable regardless of the source of the spin current, for…

Mesoscale and Nanoscale Physics · Physics 2016-06-21 Tomohiro Taniguchi

Since the discovery of the giant magnetoresistance (GMR) effect the use of the intrinsic angular momentum of the electrons has opened up new spin based device concepts. The two channel model of spin-up and spin-down electrons with…

Mesoscale and Nanoscale Physics · Physics 2014-12-24 F. K. Dejene , J. Flipse , G. E. W. Bauer , B. J. van Wees

In this article we extend the currently established diffusion theory of spin-dependent electrical conduction by including spin-dependent thermoelectricity and thermal transport. Using this theory, we propose new experiments aimed at…

Mesoscale and Nanoscale Physics · Physics 2012-01-17 A. Slachter , F. L. Bakker , B. J. van Wees

An electric current from a ferromagnet into a non-magnetic material can induce a spin-dependent electron temperature. Here it is shown that this spin heat accumulation, when created by tunneling from a ferromagnet, produces a non-negligible…

Mesoscale and Nanoscale Physics · Physics 2014-02-20 I. J. Vera-Marun , B. J. van Wees , R. Jansen

Spin-rotation coupling, which is responsible for angular momentum conversion between the electron spin and rotational deformations of elastic media, is exploited for generating spin current. This method requires neither magnetic moments nor…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 Mamoru Matsuo , Jun'ichi Ieda , Kazuya Harii , Eiji Saitoh , Sadamichi Maekawa

The spin injection and accumulation in metallic lateral spin valves with transparent interfaces is studied using d.c. injection current. Unlike a.c.-based techniques, this allows investigating the effects of the direction and magnitude of…

Mesoscale and Nanoscale Physics · Physics 2009-06-12 Fèlix Casanova , Amos Sharoni , Mikhail Erekhinsky , Ivan K. Schuller

To date, spin generation in three-dimensional topological insulators is primarily modeled as a single-surface phenomenon, attributed to the momentum-spin locking on each individual surface. In this article we propose a mechanism of spin…

Materials Science · Physics 2016-01-08 Xingyue Peng , Yiming Yang , Rajiv R. P. Singh , Sergey Y. Savrasov , Dong Yu

Spin-current generation by fluid motion is theoretically investigated. Based on quantum kinetic theory, the spin-diffusion equation coupled with fluid vorticity is derived. We show that spin currents are generated by the vorticity gradient…

Mesoscale and Nanoscale Physics · Physics 2017-07-12 Mamoru Matsuo , Yuichi Ohnuma , Sadamichi Maekawa

We study nonequilibrium spin dynamics in differentially rotating systems, deriving an effective Hamiltonian for conduction electrons in the comoving frame. In contrast to conventional spin current generation mechanisms that require…

Mesoscale and Nanoscale Physics · Physics 2025-02-19 Takumi Funato , Shunichiro Kinoshita , Norihiro Tanahashi , Shin Nakamura , Mamoru Matsuo

We study spin-dependent heat transport in quantum gases, focusing on transport phenomena related to pure spin currents and spin-dependent temperatures. Using the Boltzmann equation, we compute the coupled spin and heat transport…

Quantum Gases · Physics 2015-04-08 Clement H. Wong , H. T. C. Stoof , R. A. Duine

Spintronics is the generic term that describes magnetic systems coupled to an electric generator, taking into account the spin attached to the charge carriers. For this topical review of {\it Spin Caloritronics}, we focus our attention on…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 J. -E. Wegrowe

We microscopically analyze thermal spin pumping mediated by magnons, at the interface between a ferromagnetic insulator and a non-magnetic metal, in the semiclassical regime. The generation of a spin current is discussed by calculating the…

Mesoscale and Nanoscale Physics · Physics 2012-05-24 Kouki Nakata

We consider spin-polarized transport in a quantum spin Hall antidot system coupled to normal leads. Due to the helical nature of the conducting edge states, the screening potential at the dot region becomes spin dependent without external…

Mesoscale and Nanoscale Physics · Physics 2014-09-04 Sun-Yong Hwang , Rosa Lopez , Minchul Lee , David Sanchez

The Peltier coefficient describes the amount of heat that is carried by an electrical current when it passes through a material. Connecting two materials with different Peltier coefficients causes a net heat flow towards or away from the…

Mesoscale and Nanoscale Physics · Physics 2012-04-02 J. Flipse , F. L. Bakker , A. Slachter , F. K. Dejene , B. J. van Wees

A diathermal wall between two heat baths at different temperatures can be mimicked by a layer of independent spin pairs with some internal energy and where each spin $\sigma_a$ is flipped by thermostat $a$ ($a=1,2$). The transition rates…

Statistical Mechanics · Physics 2015-05-06 Françoise Cornu , Michel Bauer
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