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相关论文: Generic Seebeck Effect From Spin Entropy

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Compensated ferrimagnets enable ferromagnet-like spin transport without net magnetization. We study the spin Seebeck effect in a compensated ferrimagnet/normal-metal junction using a four-sublattice model in which sublattice inequivalence…

介观与纳米尺度物理 · 物理学 2026-05-12 Xin Theng Lee , Takahiro Misawa , Mamoru Matsuo , Takeo Kato

We present measurements of magneto-Seebeck effect on a spin valve with in-plane thermal gradient. We measured open circuit voltage and short circuit current by applying a temperature gradient across a spin valve stack, where one of the…

介观与纳米尺度物理 · 物理学 2014-09-18 S. Jain , D. D. Lam , A. Bose , H. Sharma , V. R. Palkar , C. V. Tomy , Y. Suzuki , A. A. Tulapurkar

A thermal gradient as the driving force for spin currents plays a key role in spin caloritronics. In this field the spin Seebeck effect (SSE) is of major interest and was investigated in terms of in-plane thermal gradients inducing…

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

We theoretically investigate the thermoelectric properties of a spin-polarized two-dimensional electron gas hosting a Kondo adatom hybridized with an STM tip. Such a setup is treated within the single-impurity Anderson model in combination…

强关联电子 · 物理学 2014-11-25 A. C. Seridonio , E. C. Siqueira , R. Franco , J. Silva-Valencia , I. A. Shelykh , M. S. Figueira

The spin degree of freedom can play an essential role in determining the electrical transport properties of spin-polarized electron systems in metals or semiconductors. In this article, I address the dependence of spin-subsystem chemical…

凝聚态物理 · 物理学 2022-09-21 A. H. MacDonald

We present a semiclassical theory of spin-diffusion in a ferromagnetic metal subject to a temperature gradient. Spin-flip scattering can generate pure thermal spin currents by short-circuiting spin channels while suppressing spin…

介观与纳米尺度物理 · 物理学 2015-05-14 Moosa Hatami , Gerrit E. W. Bauer , Saburo Takahashi , Sadamichi Maekawa

We generalize magnetoelectronic circuit theory to account for spin transfer to and from the atomic lattice via interfacial spin-orbit coupling. This enables a proper treatment of spin transport at interfaces between a ferromagnet and a…

介观与纳米尺度物理 · 物理学 2016-09-21 V. P. Amin , M. D. Stiles

A mesoscopic description of spin-transfer effect is proposed, based on the spin-injection mechanism occurring at the junction with a ferromagnet. The effect of spin-injection is to modify locally, in the ferromagnetic configuration space,…

介观与纳米尺度物理 · 物理学 2009-11-13 J. -E. Wegrowe , S. M. Santos , M. -C. Ciornei , H. -J. Drouhin , J. M. Rubí

We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect driven by an interfacial temperature difference between itinerant electrons and magnons. The measured time-evolution of spin accumulation…

Recent studies have revealed magnetically controllable thermoelectric effects in superconductor/ferromagnet (S/F) structures. A tunable cryogenic thermoelectric generator needs not only a high conversion factor between electricity and heat,…

The principles of the thermoelectric phenomenon, including Seebeck effect, Peltier effect, and Thomson effect are discussed. The dependence of the thermoelectric devices on the figure of merit, Seebeck coefficient, electrical conductivity,…

材料科学 · 物理学 2017-06-29 Ibrahim M Abdel-Motaleb , Syed M. Qadri

We report on the observation of the spin Seebeck effect in antiferromagnetic MnF$_2$. A device scale on-chip heater is deposited on a bilayer of Pt (4 nm)/MnF$_2$ (110) (30 nm) grown by molecular beam epitaxy on a MgF$_2$ (110) substrate.…

We study the thermoelectric effect of two-dimensional metals on a square lattice within semiclassical Boltzmann transport theory with particular focus on electron-electron scattering. We compute the electrical conductivity and the Seebeck…

强关联电子 · 物理学 2013-09-17 Jonathan M. Buhmann , Manfred Sigrist

Effects of conduction electrons on magnetization dynamics, represented by spin torques, are calculated microscopically in the first order in spatial gradient and time derivative of magnetization. Special attention is paid to the so-called…

介观与纳米尺度物理 · 物理学 2009-11-11 Hiroshi Kohno , Gen Tatara , Junya Shibata

A thermal gradient generates an electric field in any solid hosting mobile electrons. In presence of a finite magnetic field (or Berry curvature) this electric field has a transverse component. These are known as Seebeck and Nernst…

强关联电子 · 物理学 2022-04-12 Kamran Behnia

We theoretically investigate the longitudinal spin Seebeck effect, in which the spin current is injected from a ferromagnet into an attached nonmagnetic metal in a direction parallel to the temperature gradient. Using the fact that the…

材料科学 · 物理学 2013-07-15 Hiroto Adachi , Sadamichi Maekawa

This Letter presents ab initio calculations of the magneto-thermoelectric power (MTEP) and of the spin-Seebeck coefficient in MgO based tunnel junctions with Fe and Co leads. In addition, the normal thermopower is calculated and gives for…

介观与纳米尺度物理 · 物理学 2011-04-26 Michael Czerner , Michael Bachmann , Christian Heiliger

We develop a microscopic theory for the spin Seebeck effect (SSE) in N\'eel and canted phases of antiferromagnetic insulators. We calculate the DC spin current tunneling from the antiferromagnet to an attached metal, incorporating the…

强关联电子 · 物理学 2024-02-14 Keisuke Masuda , Masahiro Sato

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