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Conventional and spin-related thermoelectric effects in transport through a magnetic tunnel junction with a large-spin impurity, such as a magnetic molecule or atom, embedded into the corresponding barrier are studied theoretically in the…

介观与纳米尺度物理 · 物理学 2014-11-11 Maciej Misiorny , Józef Barnaś

In this paper we investigate the spin-resolved thermoelectric properties of strongly correlated molecular junctions in the linear response regime. The magnetic molecule is modeled by a single orbital level to which the molecular core spin…

介观与纳米尺度物理 · 物理学 2021-05-25 Anand Manaparambil , Ireneusz Weymann

Thermoelectric effects in magnetic nanostructures and the so-called spin caloritronics are attracting much interest. Indeed it provides a new way to control and manipulate spin currents which are key elements of spin-based electronics. Here…

Magnetic anisotropies have key role to taylor magnetic behavior in ferromagnetic systems. Further, they are also essential elements to manipulate the thermoelectric response in Anomalous Nernst (ANE) and Longitudinal Spin Seebeck systems…

The influence of an asymmetric in-plane magnetic anisotropy on the thermally activated spin current is studied theoretically for two different systems; (i) the system consisting of a ferromagnetic insulator in a direct contact with a…

介观与纳米尺度物理 · 物理学 2015-12-09 L. Chotorlishvili , Z. Toklikishvili , S. R. Etesami , V. K. Dugaev , J. Barnas , J. Berakdar

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

We theoretically investigate the effect of transverse magnetic anisotropy on spin-flip assisted tunneling through atomic spin chains. Using a phenomenological approach and first-order perturbation theory, we analytically calculate the…

介观与纳米尺度物理 · 物理学 2017-05-17 J. Hageman , M. Blaauboer

The angular dependence of the thermal transport in insulating or conducting ferromagnets is derived on the basis of the Onsager reciprocity relations applied to a magnetic system. It is shown that the angular dependence of the temperature…

介观与纳米尺度物理 · 物理学 2015-06-17 J. -E. Wegrowe , H. -J. Drouhin , D. Lacour

The interplay of charge, spin and heat transport is investigated in the fascinating research field of spin caloritronics, the marriage of spintronics and thermoelectrics. Here, many new spin-dependent thermal transport phenomena in magnetic…

Thermoelectric transport across normal-metal/helical-multiferroic/ferromagnetic heterojunctions is theoretically investigated. We find a anisotropic charge and spin thermopower with a $C_{2v}$ symmetry. The angular dependence on the…

介观与纳米尺度物理 · 物理学 2015-05-28 Chenglong Jia , Jamal Berakdar

The Tunneling Anisotropic Magneto-Thermopower (TAMT) and the Tunneling Anisotropic Spin-Seebeck (TASS) effects are studied for a magnetic tunnel junction (MTJ) composed of a ferromagnetic electrode, a zinc-blende semiconductor and a normal…

介观与纳米尺度物理 · 物理学 2014-11-25 Carlos López-Monís , Alex Matos-Abiague , Jaroslav Fabian

The spin Seebeck effect is studied across a charge insulating magnetic junction, in which thermal-spin conjugate transport is assisted by the exchange interactions between the localized spin in the center and electrons in metallic leads. We…

介观与纳米尺度物理 · 物理学 2014-06-23 Jie Ren , Jonas Fransson , Jian-Xin Zhu

We theoretically investigate the role of spin fluctuations in charge transport through a magnetic junction. Motivated by recent experiments that measure a nonlinear dependence of the current on electrical bias, we develop a systematic…

介观与纳米尺度物理 · 物理学 2019-02-06 Scott A. Bender , Rembert A. Duine , Yaroslav Tserkovnyak

We model and evaluate the Peltier and Seebeck effects in magnetic multilayer nanostructures by a finite-element theory of thermoelectric properties. We present analytical expressions for the thermopower and the current-induced temperature…

介观与纳米尺度物理 · 物理学 2009-05-21 Moosa Hatami , Gerrit E. W. Bauer , Qinfang Zhang , Paul J. Kelly

An attractive feature of magnetic adatoms and molecules for nanoscale applications is their superparamagnetism, the preferred alignment of their spin along an easy axis preventing undesired spin reversal. The underlying magnetic anisotropy…

介观与纳米尺度物理 · 物理学 2014-07-22 Maciej Misiorny , Michael Hell , Maarten R. Wegewijs

We report the observation of tunneling anisotropic magnetothermopower, a voltage response to a temperature difference across an interface between a normal and a magnetic semiconductor. The resulting voltage is related to the energy…

介观与纳米尺度物理 · 物理学 2015-06-03 Ts. Naydenova , P. Dürrenfeld , K. Tavakoli , N. Pegard , L. Ebel , K. Pappert , K. Brunner , C. Gould , L. W. Molenkamp

Effects of impurity on the spin-dependent transport in a single wall carbon nanotube spin-valve, as ferromagnetic electrode/carbon nanotube/ferromagnetic electrode model junction is numerically investigated. Using a generalized Green's…

介观与纳米尺度物理 · 物理学 2016-08-09 A. Ahmadi Fouladi , J. Vahedi , M. Soleymani

The anisotropy of magnetic emulsions induced by simultaneously acting electric and magnetic fields is theoretically and experimentally investigated. Due to the anisotropy, the electric conductivity and magnetic permeability of a magnetic…

材料科学 · 物理学 2011-09-13 Yury I. Dikansky , Alexander N. Tyatyushkin , Arthur R. Zakinyan

We study the charge and spin Seebeck effects in a spin-1 molecular junction as a function of temperature (T), applied magnetic field (H), and magnetic anisotropy (D) using Wilson's numerical renormalization group. A hard-axis magnetic…

强关联电子 · 物理学 2012-07-26 Pablo S. Cornaglia , Gonzalo Usaj , C. A. Balseiro

It was experimentally observed that both magnetic anisotropy and spin-orbit interaction strength change when the magnetization of the nanomagnet is reversed. This indicates a variation in spin-orbit interaction strength depending on whether…

介观与纳米尺度物理 · 物理学 2024-07-10 Vadym Zayets
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