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Using wave function matching approach and employing the Landauer-Buttiker formula a ferromagnetic graphene junction with a temperature gradient across the system, is studied. We calculate the thermally induced charge and spin current as…

介观与纳米尺度物理 · 物理学 2016-08-24 Javad Vahedi , Fattaneh Barimani

In recent years, new spin-dependent thermal effects have been discovered in ferromagnets, stimulating a growing interest in spin caloritronics, a field that exploits the interaction between spin and heat currents. Amongst the most…

介观与纳米尺度物理 · 物理学 2018-04-26 Juan F. Sierra , Ingmar Neumann , Jo Cuppens , Bart Raes , Marius V. Costache , Sergio O. Valenzuela

We show that graphene with Mn adatoms trapped at single vacancies feature spin-dependent Seebeck effect, thus enabling the use of this material for spin caloritronics. A gate potential can be used to tune its thermoelectric properties in a…

介观与纳米尺度物理 · 物理学 2014-02-25 Alberto Torres , Matheus P. Lima , A. Fazzio , Antônio J. R. da Silva

Using the Bogoliubov de-Gennes formalism, we investigate the charge and spin-dependent thermoelectric effects in superconductor graphene junctions. Results demonstrate that despite normal-superconductor junctions, there is a…

超导电性 · 物理学 2017-03-08 Razieh Beiranvand , Hossein Hamzehpour

We investigate the coupling of spin and thermal currents as a means to rise the thermoelectric efficiency of nanoscale graphene devices. We consider nanostructures composed of overlapping graphene nanoribbons with ferromagnetic contacts in…

介观与纳米尺度物理 · 物理学 2017-11-22 Leonor Chico , P. A. Orellana , L. Rosales , M. Pacheco

Spin caloritronics is the science and technology to control spin, charge, and heat currents in magnetic nanostructures. The spin degree of freedom provides new strategies for thermolelectric power generation that have not yet been fully…

介观与纳米尺度物理 · 物理学 2015-10-09 Adam B. Cahaya , Oleg A. Tretiakov , G. E. W. Bauer

We develop a microscopic theory of the spin Seebeck effect (SSE) at the interface of a bilayer system of a ferromagnetic insulator and graphene. We compare the tunneling spin current at the interface because of the SSE and the spin pumping…

介观与纳米尺度物理 · 物理学 2024-12-25 Xin Hu , Yuya Ominato , Mamoru Matsuo

We consider theoretically a wide graphene ribbon, that on both ends is attached to electronic reservoirs which generally have different temperatures. The graphene ribbon is assumed to be deposited on a substrate, that leads to a spin-orbit…

介观与纳米尺度物理 · 物理学 2015-09-02 M. Inglot , V. K. Dugaev , J. Barnaś

The spin Seebeck effect is a spin-motive force generated by a temperature gradient in a ferromagnet that can be detected via normal metal contacts through the inverse spin Hall effect [K. Uchida {\it et al.}, Nature {\bf 455}, 778-781…

材料科学 · 物理学 2010-09-07 Jiang Xiao , Gerrit E. W. Bauer , Ken-ichi Uchida , Eiji Saitoh , Sadamichi Maekawa

The spin Seebeck effect refers to the generation of a spin voltage caused by a temperature gradient in a ferromagnet, which enables the thermal injection of spin currents from the ferromagnet into an attached nonmagnetic metal over a…

介观与纳米尺度物理 · 物理学 2015-06-11 Hiroto Adachi , Ken-ichi Uchida , Eiji Saitoh , Sadamichi Maekawa

How magnetism affects the Seebeck effect is an important issue widely concerned in the thermoelectric community yet remaining elusive. Based on a thermodynamic analysis of spin degrees of freedom on varied $d$-electron based ferro- and…

材料科学 · 物理学 2021-06-15 Peijie Sun , K. Ramesh Kumar , Meng Lyu , Zhen Wang , Junsen Xiang , Wenqing Zhang

Based on the solution of the stochastic Landau-Lifshitz-Gilbert equation discretized for a ferromagnetic chain subject to a uniform temperature gradient, we present a detailed numerical study of the spin dynamics with a focus particularly…

材料科学 · 物理学 2014-07-15 S. R. Etesami , L. Chotorlishvili , A. Sukhov , J. Berakdar

We investigate the spin-dependent thermoelectric effect of graphene flakes with magnetic edges in the ballistic regime. Employing static, respectively, dynamic mean-field theory we first show that magnetism appears at the zigzag edges for a…

We investigate the generation of magnonic thermal spin currents and their mode selective spin transport across interfaces in insulating, compensated ferrimagnet/normal metal bilayer systems. The spin Seebeck effect signal exhibits a…

Using analytical arguments and the numerical renormalization group method we investigate the spin-thermopower of a quantum dot in a magnetic field. In the particle-hole symmetric situation the temperature difference applied across the dot…

介观与纳米尺度物理 · 物理学 2012-02-24 Tomaz Rejec , Rok Zitko , Jernej Mravlje , Anton Ramsak

Graphene halfly doped with H or F possesses local magnetization at the undoped C sites. Thus the Seebeck coefficient is different for each spin channel and its sign also changes depending on the spin polarization. Deposition of doped…

材料科学 · 物理学 2014-10-07 Malgorzata Wierzbowska , Adam Dominiak

We investigate the transport properties of a graphene layer in the presence of Rashba spin-orbit interaction. Quite generally, spin-orbit interactions induce spin splittings and modifications of the graphene bandstructure. We calculate…

介观与纳米尺度物理 · 物理学 2014-12-05 M. I. Alomar , David Sanchez

We theoretically consider the spin Seebeck effect, the charge Seebeck coefficient, and the thermoelectric figure of merit in superconducting hybrid structures including either magnetic textures or intrinsic spin-orbit coupling. We…

介观与纳米尺度物理 · 物理学 2017-02-01 Marianne Etzelmüller Bathen , Jacob Linder

The abilities to inject and detect spin carriers are fundamental for research on transport and manipulation of spin information. Pure electronic spin currents have been recently studied in nanoscale electronic devices using a non-local…

介观与纳米尺度物理 · 物理学 2012-09-25 I. J. Vera-Marun , V. Ranjan , B. J. van Wees

Spin caloritronics studies the interplay between charge-, heat- and spin-currents, which are initiated by temperature gradients in magnetic nanostructures. A plethora of new phenomena has been discovered that promises, e.g., to make wasted…

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