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相关论文: Large Tunable Thermoelectric Effects in Supercondu…

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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

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 theoretically study a finite size $SF_1NF_2$ spin valve, where a normal metal ($N$) insert separates a thin standard ferromagnet ($F_1$) and a thick half-metallic ferromagnet ($F_2$). For sufficiently thin superconductor ($S$) widths…

超导电性 · 物理学 2018-03-12 Klaus Halterman , Mohammad Alidoust

We show that the peculiarities of the electron band structure strongly affect the spin-valve effect in heterostructures consisting of a superconductor (S) and two ferromagnetic layers F1 and F2. For the S/F1/F2 systems the energy shift…

超导电性 · 物理学 2017-04-14 Zh. Devizorova , S. Mironov

Thermoelectrical properties are frequently used to characterize the materials and endow the free energy from wasted heat for useful purposes. Here, we show that linear thermoelectric effects in tunnel junctions with Fe-based…

超导电性 · 物理学 2023-10-02 Claudio Guarcello , Alessandro Braggio , Francesco Giazotto , Roberta Citro

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…

The spin Seebeck effect (SSE) refers to the generation of a spin current as a result of a temperature gradient in magnetic materials including insulators. The SSE is applicable to thermoelectric generation because the thermally generated…

Superconductor/ferromagnet (S/F) spin valve effect theories based on the S/F proximity phenomenon assume that the superconducting transition temperature Tc of F1/F2/S or F1/S/F2 trilayers for parallel magnetizations of the F1- and F2-layers…

We report on large thermoelectric effects in superconductor-ferromagnet tunnel junctions in proximity contact with the ferromagnetic insulator europium sulfide. The combination of a spin-splitting field and spin-polarized tunnel conductance…

超导电性 · 物理学 2017-06-14 S. Kolenda , C. Sürgers , G. Fischer , D. Beckmann

Transport properties in the presence of magnetic fields are numerically studied for the spin-1/2 Heisenberg XXZ chain. The breakdown of the spin-reversal symmetry due to the magnetic field induces the magnetothermal effect. In analogy with…

统计力学 · 物理学 2007-05-23 Shunsuke Furukawa , Dai Ikeda , Kazumitsu Sakai

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

Unique electronic spin textures in topological states of matter are promising for emerging spin-orbit driven memory and logic technologies. However, there are several challenges related to the enhancement of their performance, electrical…

介观与纳米尺度物理 · 物理学 2020-08-10 Dmitrii Khokhriakov , Anamul Md. Hoque , Bogdan Karpiak , Saroj P. Dash

We show that a huge thermoelectric effect can be observed by contacting a superconductor whose density of states is spin-split by a Zeeman field with a ferromagnet with a non-zero polarization. The resulting thermopower exceeds $k_B/e$ by a…

超导电性 · 物理学 2014-02-10 A. Ozaeta , P. Virtanen , F. S. Bergeret , T. T. Heikkilä

We investigate the spin-dependent thermoelectric effects in magnetic graphene in both diffusive and ballistic regimes. Employing the Boltzmann and Landauer formalisms we calculate the spin and charge Seebeck coefficients (thermopower) in…

介观与纳米尺度物理 · 物理学 2015-04-10 Babak Zare Rameshti , Ali G. Moghaddam

Half-metal ferromagnets were predicted [in IEEE Trans. Mag. 51, 1 (2015)] to give large thermoelectric performance in anti-parallel spin valve configuration. Despite being metals that suffer from the Wiedemann-Franz law, the additional spin…

介观与纳米尺度物理 · 物理学 2024-11-26 Finantius E. M. Rahangiar , Adam B. Cahaya , Melania S. Muntini , Isa Anshori , Eddwi H. Hasdeo

We study spin switching effects in finite-size superconducting multivalve structures. We examine $\rm F_1F_2SF_3$ and $\rm F_1F_2SF_3F_4$ hybrids where a singlet superconductor ($\rm S$) layer is sandwiched among ferromagnet ($\rm F$)…

超导电性 · 物理学 2018-03-09 Mohammad Alidoust , Klaus Halterman

We study the effects of spin-splitting and spin-flip scattering in a superconductor (S) on the thermoelectric properties of a tunneling contact to a metallic ferromagnet (F) using the Green's function method. A giant thermopower has been…

超导电性 · 物理学 2018-08-20 A. Rezaei , A. Kamra , P. Machon , W. Belzig

We investigate the interplay between the thermodynamic properties and spin-dependent transport in a mesoscopic device based on a magnetic multilayer (F/f/F), in which two strongly ferromagnetic layers (F) are exchange-coupled through a…

介观与纳米尺度物理 · 物理学 2015-05-13 A. M. Kadigrobov , S. Andersson , D. Radic , R. I. Shekhter , M. Jonson , V. Korenivski

Creating temperature gradients in magnetic nanostructures has resulted in a new research direction, i.e., the combination of magneto- and thermoelectric effects. Here, we demonstrate the observation of one important effect of this class:…

We consider a spin-orbit-coupled two-dimensional electron system under the influence of a thermal gradient externally applied to two attached reservoirs. We discuss the generated voltage bias (charge Seebeck effect), spin bias (spin Seebeck…

介观与纳米尺度物理 · 物理学 2015-03-05 M. I. Alomar , Llorenç Serra , David Sanchez