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We theoretically explore the generation of spin current driven by a temperature gradient in a junction between a chiral insulator and a normal metal. Based on the gyromagnetic response induced by microscopic acoustic-phonon-mediated lattice…

Mesoscale and Nanoscale Physics · Physics 2025-08-20 Naoki Nishimura , Takumi Funato , Mamoru Matsuo , Takeo Kato

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…

Strongly Correlated Electrons · Physics 2024-02-14 Keisuke Masuda , Masahiro Sato

We study the transverse spin-Seebeck effect (SSE) on the surface of a three-dimensional topological insulator (TI) thin film, such as Bi$_2$Se$_3$, which is sandwiched between two normal metal leads. The temperature bias $\Delta T$ applied…

Mesoscale and Nanoscale Physics · Physics 2014-06-17 Po-Hao Chang , Farzad Mahfouzi , Naoto Nagaosa , Branislav K. Nikolic

We have theoretically investigated the spin Seebeck effect (SSE) in a normal metal (NM)/paramagnetic insulator (PI) bilayer system. Through a linear response approach, we calculated the thermal spin pumping from PI to NM and backflow spin…

Mesoscale and Nanoscale Physics · Physics 2023-01-31 Koichi Oyanagi , Saburo Takahashi , Takashi Kikkawa , Eiji Saitoh

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…

Mesoscale and Nanoscale Physics · Physics 2014-06-23 Jie Ren , Jonas Fransson , Jian-Xin Zhu

We present measurements of the spin Seebeck effect (SSE) by a technique that combines alternating currents (AC) and direct currents (DC). The method is applied to a ferrimagnetic insulator/heavy metal bilayer, Y$_3$Fe$_5$O$_{12}$(YIG)/Pt.…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 Yizhang Chen , Debangsu Roy , Egecan Cogulu , Houchen Chang , Mingzhong Wu , Andrew D. Kent

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…

Mesoscale and Nanoscale Physics · Physics 2024-12-25 Xin Hu , Yuya Ominato , Mamoru Matsuo

Efficient generation of spin polarization is the central focus of spintronics. In magnetic materials, spin currents can arise from heat currents by the conventional spin Seebeck effect. Recently, chiral phonons with definite handedness and…

Mesoscale and Nanoscale Physics · Physics 2022-03-22 Xiao Li , Jinxin Zhong , Jinluo Cheng , Hao Chen , Lifa Zhang , Jun Zhou

The spin-Seebeck effect (SSE) in ferromagnetic metals and insulators has been investigated systematically by means of the inverse spin-Hall effect (ISHE) in paramagnetic metals. The SSE generates a spin voltage as a result of a temperature…

Materials Science · Physics 2012-06-26 K. Uchida , T. Ota , H. Adachi , J. Xiao , T. Nonaka , Y. Kajiwara , G. E. W. Bauer , S. Maekawa , E. Saitoh

Spin Seebeck effect (SSE) refers to the creation of spin currents due to a temperature gradient in the magnetic materials or across magnet-normal metal interfaces, which can be electrically detected through the inverse spin Hall effect…

We report the observation of magnon spin currents generated by the Spin Seebeck effect (SSE) in a bulk single crystal of the easy-plane antiferromagnet NiO. A magnetic field induces a non-degeneracy and thereby an imbalance in the…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 Geert R. Hoogeboom , Bart J. van Wees

We consider spin-polarized transport in a quantum spin Hall antidot system coupled to normal leads. Due to the helical nature of the conducting edge states, the screening potential at the dot region becomes spin dependent without external…

Mesoscale and Nanoscale Physics · Physics 2014-09-04 Sun-Yong Hwang , Rosa Lopez , Minchul Lee , David Sanchez

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…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Hiroto Adachi , Ken-ichi Uchida , Eiji Saitoh , Sadamichi Maekawa

The spin Seebeck effect (SSE) in ferrimagnetic insulators (FMI) provides a simple method of using heat to manipulate magnons, which could be used as carriers of information and energy conversion. However, a theory that can quantitively…

The spin Seebeck effect (SSE) refers to the generation of a spin current as a result of a temperature gradient in a magnetic material, which can be detected electrically via the inverse spin Hall effect in a metallic contact. Since the…

Materials Science · Physics 2023-03-14 Takashi Kikkawa , Eiji Saitoh

The interplay between spin and heat currents at magnetic insulator|nonmagnetic metal interfaces has been a subject of much scrutiny because of both fundamental physics and the promise for technological applications. While ferrimagnetic and,…

Mesoscale and Nanoscale Physics · Physics 2019-06-13 Benedetta Flebus , Yaroslav Tserkovnyak , Gregory A. Fiete

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…

Mesoscale and Nanoscale Physics · Physics 2014-11-11 Maciej Misiorny , Józef Barnaś

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…

Materials Science · Physics 2013-07-15 Hiroto Adachi , Sadamichi Maekawa

We develop a low-temperature, long-wavelength theory for the interfacial spin Seebeck effect (SSE) in easy-axis antiferromagnets. The field-induced spin-flop (SF) transition of N\'eel order is associated with a qualitative change in SSE…

Mesoscale and Nanoscale Physics · Physics 2020-07-29 Derek Reitz , Junxue Li , Wei Yuan , Jing Shi , Yaroslav Tserkovnyak

We investigate spin transport by thermally excited spin waves in an antiferromagnetic insulator. Starting from a stochastic Landau-Lifshitz-Gilbert phenomenology, we obtain the out-of-equilibrium spin-wave properties. In linear response to…

Mesoscale and Nanoscale Physics · Physics 2018-11-05 Scott A. Bender , Hans Skarsvåg , Arne Brataas , Rembert A. Duine
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