TY - JOUR
T1 - Enhancement of spin-seebeck voltage by spin-hall thermopile
AU - Uchida, Ken Ichi
AU - Nonaka, Tatsumi
AU - Yoshino, Tatsuro
AU - Kikkawa, Takashi
AU - Kikuchi, Daisuke
AU - Saitoh, Eiji
PY - 2012/9
Y1 - 2012/9
N2 - Voltage signals induced by the spin-Seebeck effect (SSE) are shown to be enhanced by introducing a thermopile structure consisting of two different metals with positive and negative spin-Hall angles. In the "spin-Hall thermopile", the positive and negative SSE signals in the metals are added to the output voltage in series. Here, we demonstrate that a Pt/Nb thermopile on an Y 3Fe 5O 12 (YIG) slab exhibits the SSE voltage one order of magnitude greater than that in a plain Pt/YIG system. Since the spin-Hall thermopile enables sensitive detection of a spin voltage in a versatile manner, it will be useful to construct spin and heat sensors.
AB - Voltage signals induced by the spin-Seebeck effect (SSE) are shown to be enhanced by introducing a thermopile structure consisting of two different metals with positive and negative spin-Hall angles. In the "spin-Hall thermopile", the positive and negative SSE signals in the metals are added to the output voltage in series. Here, we demonstrate that a Pt/Nb thermopile on an Y 3Fe 5O 12 (YIG) slab exhibits the SSE voltage one order of magnitude greater than that in a plain Pt/YIG system. Since the spin-Hall thermopile enables sensitive detection of a spin voltage in a versatile manner, it will be useful to construct spin and heat sensors.
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U2 - 10.1143/APEX.5.093001
DO - 10.1143/APEX.5.093001
M3 - Article
AN - SCOPUS:84866429108
SN - 1882-0778
VL - 5
JO - Applied Physics Express
JF - Applied Physics Express
IS - 9
M1 - 093001
ER -