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Related papers: Low temperature spin Seebeck effect in non-magneti…

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We propose a mechanism of the spin Seebeck effect attributed to excitonic condensation in a nonmagnetic insulator. We analyze a half-filled two-orbital Hubbard model with a crystalline field splitting in the strong coupling limit. In this…

Strongly Correlated Electrons · Physics 2021-03-10 Joji Nasu , Makoto Naka

Correlated electron materials (CEMs) host a rich variety of condensed matter phases. Vanadium dioxide (VO2) is a prototypical CEM with a temperature-dependent metal-to-insulator (MIT) transition with a concomitant crystal symmetry change.…

Investigating exotic magnetic materials with spintronic techniques is effective at advancing magnetism as well as spintronics. In this work, we report unusual field-induced suppression of the spin-Seebeck effect (SSE) in a quasi…

Strongly Correlated Electrons · Physics 2019-10-02 Daichi Hirobe , Masahiro Sato , Masato Hagihala , Yuki Shiomi , Takatsugu Masuda , Eiji Saitoh

In general, it is difficult to access the thermal conductivity of thin insulating films experimentally just by electrical means. Here, we present a new approach utilizing the tunnel magneto-Seebeck effect (TMS) in combination with…

A scannable laser beam is used to generate local thermal gradients in metallic (Co2FeAl) or insulating (Y3Fe5O12) ferromagnetic thin films. We study the resulting local charge and spin currents that arise due to the anomalous Nernst effect…

In the framework of the kinetic approach based on the Boltzmann equation for the phonon distribution function, we analyze phonon heat transfer in a heterostructure containing a layer of a normal metal ($ N $) and a layer of a ferromagnetic…

Materials Science · Physics 2019-07-17 A. I. Bezuglyj , V. A. Shklovskij , V. V. Kruglyak , R. V. Vovk

We report the observation of magnetic-field-induced suppression of the spin Peltier effect (SPE) in a junction of a paramagnetic metal Pt and a ferrimagnetic insulator ${\rm Y_{3}Fe_{5}O_{12}}$ (YIG) at room temperature. For driving the…

Materials Science · Physics 2017-11-29 Ryuichi Itoh , Ryo Iguchi , Shunsuke Daimon , Koichi Oyanagi , Ken-ichi Uchida , Eiji Saitoh

We investigated nonlinear conduction in bulk single crystals of VO2 with precise temperature control. Two distinct nonequilibrium phenomena were identified: a gradual reduction of the charge gap and a current-induced insulator-metal…

Strongly Correlated Electrons · Physics 2025-05-13 Akitoshi Nakano , Masato Imaizumi , Ichiro Terasaki

We report first-principles calculations of inelastic Seebeck coefficients in an aluminum monatomic junction. We compare the elastic and inelastic Seebeck coefficients with and without local heating. In the low temperature regime, the…

Mesoscale and Nanoscale Physics · Physics 2011-01-27 Bailey C. Hsu , Yu-Shen Liu , Sheng Hsien Lin , Yu-Chang Chen

We report inelastic neutron scattering measurements of low energy ($\hbar \omega < 10$ meV) magnetic excitations in the "11" system Fe$_{1+y}$Te$_{1-x}$Se$_{x}$. The spin correlations are two-dimensional (2D) in the superconducting samples…

Spin Seebeck effect (SSE) holds promise for new spintronic devices with low-energy consumption. The underlying physics, essential for a further progress, is yet to be fully clarified. This study of the time resolved longitudinal SSE in the…

Materials Science · Physics 2015-10-28 S. R. Etesami , L. Chotorlishvili , J. Berakdar

Vanadium dioxide (VO$_2$) is a strongly-correlated material that exhibits insulator-to-metal transition (IMT) near room temperature, which makes it a promising candidate for applications in nanophotonics or optoelectronics. However,…

Spin Seebeck effect has been investigated in Pt/$\varepsilon$-Fe$_2$O$_3$ bilayers. The $\varepsilon$-Fe$_2$O$_3$ thin layer with $40-70$~nm thickness were deposited by a spin-coating method on Y:ZrO$_2$(100) substrates. The prepared layers…

Materials Science · Physics 2021-12-08 K. Knížek , M. Pashchenko , P. Levinský , O. Kaman , P. Jiříček , J. Hejtmánek , M. Soroka , J. Buršík

We report measurements of the resistance of silicon MOSFETs as a function of temperature in high parallel magnetic fields where the 2D system of electrons has been shown to be fully spin-polarized. A magnetic field suppresses the metallic…

Strongly Correlated Electrons · Physics 2009-10-31 K. M. Mertes , Hairong Zheng , S. A. Vitkalov , M. P. Sarachik , T. M. Klapwijk

We study the spin-Seebeck effect in a strongly interacting, two-component Fermi gas and propose an experiment to measure this effect by relatively displacing spin up and spin down atomic clouds in a trap using spin-dependent temperature…

Quantum Gases · Physics 2012-08-10 C. H. Wong , H. T. C. Stoof , R. A. Duine

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…

Mesoscale and Nanoscale Physics · Physics 2021-05-25 Anand Manaparambil , Ireneusz Weymann

In this work, we study the conductance and the thermoelectric properties of a quantum dot embedded between two metallic leads with a side-coupled triple quantum dot molecule under a magnetic field. We focus on the spin polarization and…

Mesoscale and Nanoscale Physics · Physics 2017-10-16 J. P. Ramos-Andrade , F. J. Peña , A. González , O. Ávalos-Ovando , P. A. Orellana

Vanadium silicide (V$_3$Si) is a promising superconductor for integration with silicon-based electronics, however the interfacial growth kinetics have a strong influence on the resulting superconducting properties and are not yet fully…

We use neutron scattering to study temperature dependent spin excitations in insulating antiferromagnetic (AF) Rb$_{0.8}$Fe$_{1.6}$Se$_2$. In the low-temperature AF state, spin waves can be accurately described by a local moment Heisenberg…

The Seebeck coefficient, $S=L_{12}/(TL_{11})$, which is proportional to a ratio of the thermoelectric conductivity $L_{12}$ to the electric conductivity $L_{11}$ with $T$ being temperature is examined for two-dimensional Dirac electrons in…

Mesoscale and Nanoscale Physics · Physics 2025-11-18 Yoshikazu Suzumura , Takao Tsumuraya , Masao Ogata