Improvement of Mixing Conductance and Spin-Seebeck Effect at Fe Interface Treatment

MRS Advances ◽  
2016 ◽  
Vol 1 (60) ◽  
pp. 3959-3964 ◽  
Author(s):  
Y. Iwasaki ◽  
M. Ishida ◽  
A. Kirihara ◽  
K. Ihara ◽  
H. Someya ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Spin Current ◽  
Seebeck Effect ◽  
Experimental Results ◽  
Current Decay ◽  
Spin Seebeck Effect ◽  
Interface Treatment ◽  
Seebeck Voltage

ABSTRACTIn the previous work, it is reported that the Spin-Seebeck effect (SSE), which refer to the generation of a spin current from a temperature gradient, can be enhanced by Fe interface treatment. Here, we investigated the Fe thickness (dFe) dependency of spin-Seebeck voltage (VSSE) and mixing conductance (gr) in Pt/Fe/Bi:YIG/SGGG system. As a result, magnitude of VSSE had a peak at dFe ≓ 1 ML (monolayer , ≓ 0.3 mm), and also increase of gr was saturated at this point. It suggests that VSSE increase with increasing gr when dFe is smaller than 1.0 ML. For the case in which dFe is larger than 1.0ML, however, VSSE decreases due to a spin current decay in Fe layer with a constant gr. These experimental results are consistent with previous theoretical works.

scholarly journals Spin Seebeck effect in Cu2OSeO3 : Test of bulk magnon spin current theory

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
A. Akopyan ◽  
N. Prasai ◽  
B. A. Trump ◽  
G. G. Marcus ◽  
T. M. McQueen ◽  
...  
Keyword(s):  
Spin Current ◽  
Current Theory ◽  
Seebeck Effect ◽  
Spin Seebeck Effect

scholarly journals Bulk magnon spin current theory for the longitudinal spin Seebeck effect

2016 ◽  
Vol 400 ◽  
pp. 171-177 ◽  
Author(s):  
S.M. Rezende ◽  
R.L. Rodríguez-Suárez ◽  
R.O. Cunha ◽  
J.C. López Ortiz ◽  
A. Azevedo
Keyword(s):  
Spin Current ◽  
Current Theory ◽  
Seebeck Effect ◽  
Spin Seebeck Effect ◽  
Longitudinal Spin

scholarly journals Spin Current Noise of the Spin Seebeck Effect and Spin Pumping

2018 ◽  
Vol 120 (3) ◽  
Author(s):  
M. Matsuo ◽  
Y. Ohnuma ◽  
T. Kato ◽  
S. Maekawa
Keyword(s):  
Spin Current ◽  
Seebeck Effect ◽  
Current Noise ◽  
Spin Pumping ◽  
Spin Seebeck Effect

Magnon spin-current theory for the longitudinal spin-Seebeck effect

2014 ◽  
Vol 89 (1) ◽  
Author(s):  
S. M. Rezende ◽  
R. L. Rodríguez-Suárez ◽  
R. O. Cunha ◽  
A. R. Rodrigues ◽  
F. L. A. Machado ◽  
...  
Keyword(s):  
Spin Current ◽  
Current Theory ◽  
Seebeck Effect ◽  
Spin Seebeck Effect ◽  
Longitudinal Spin

Robust spin current generated by the spin Seebeck effect

2017 ◽  
Vol 1 (3) ◽  
Author(s):  
Feng-Jen Chang ◽  
Jauyn Grace Lin ◽  
Ssu-Yen Huang
Keyword(s):  
Spin Current ◽  
Seebeck Effect ◽  
Spin Seebeck Effect

scholarly journals Triplon current generation in solids

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yao Chen ◽  
Masahiro Sato ◽  
Yifei Tang ◽  
Yuki Shiomi ◽  
Koichi Oyanagi ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Magnetic Order ◽  
Broad Class ◽  
Spin Current ◽  
Elementary Excitation ◽  
Seebeck Effect ◽  
Spin Angular Momentum ◽  
Quantum Properties ◽  
Spin Seebeck Effect ◽  
Fictitious Particle

AbstractA triplon refers to a fictitious particle that carries angular momentum S=1 corresponding to the elementary excitation in a broad class of quantum dimerized spin systems. Such systems without magnetic order have long been studied as a testing ground for quantum properties of spins. Although triplons have been found to play a central role in thermal and magnetic properties in dimerized magnets with singlet correlation, a spin angular momentum flow carried by triplons, a triplon current, has not been detected yet. Here we report spin Seebeck effects induced by a triplon current: triplon spin Seebeck effect, using a spin-Peierls system CuGeO3. The result shows that the heating-driven triplon transport induces spin current whose sign is positive, opposite to the spin-wave cases in magnets. The triplon spin Seebeck effect persists far below the spin-Peierls transition temperature, being consistent with a theoretical calculation for triplon spin Seebeck effects.

Spin Seebeck effect

2017 ◽  
Author(s):  
K. Uchida ◽  
R. Ramos ◽  
E. Saitoh
Keyword(s):  
Magnetic Field ◽  
Spin Current ◽  
Seebeck Effect ◽  
Crucial Importance ◽  
Multilayer Systems ◽  
Thermoelectric Conversion ◽  
Spin Caloritronics ◽  
Spin Seebeck Effect ◽  
Field Response ◽  
Basic Characteristics

Chapter 18 This chapter discusses the spin Seebeck effect (SSE), which stands for the generation of a spin current, a flow of spinangular momentum, as a result of a temperature gradient in magnetic materials. In spintronics and spin caloritronics, the SSE is of crucial importance because it enables simple and versatile generation of a spin current from heat. Since the SSE is driven by thermally excited magnon dynaimcs, the thermal spin current can be generated not only from ferromagnetic conductors but also from insulators. Therefore, the SSE is applicable to “insulator-based thermoelectric conversion” which was impossible if only conventional thermoelectric technologies were used. In this chapter, after introducing basic characteristics and mechanisms of the SSE, important experimental progresses, such as the high-magnetic-field response of the SSE and the enhancement of the SSE in multilayer systems, are reviewed.

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