Enhanced room-temperature spin Seebeck effect in a YIG/C60/Pt layered heterostructure | Zendy

Raja Das | Zendy; Vijaysankar Kalappattil | Zendy; Rongli Geng | Zendy; Hoang Mai Luong | Zendy; Minh Thien Pham | Zendy; Tho Duc Nguyen | Zendy; Tao Liu | Zendy; Mingzhong Wu | Zendy; ManhHuong Phan | Zendy; H. Srikanth | Zendy

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Enhanced room-temperature spin Seebeck effect in a YIG/C60/Pt layered heterostructure

Author(s) -

Raja Das,

Vijaysankar Kalappattil,

Rongli Geng,

Hoang Mai Luong,

Minh Thien Pham,

Tho Duc Nguyen,

Tao Liu,

Mingzhong Wu,

ManhHuong Phan,

H. Srikanth

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5007233

Subject(s) - condensed matter physics , thermoelectric effect , materials science , spin (aerodynamics) , heterojunction , spintronics , anisotropy , ferromagnetism , physics , optics , thermodynamics

We report on large enhancement of the longitudinal spin Seebeck effect (LSSE) in the Y3Fe5O12 (YIG)/Pt system at room temperature due to the addition of a thin layer of organic semiconductor (C60) in between the YIG and the Pt. LSSE measurements show that the LSSE voltage increases significantly, from the initial value of 150 nV for the YIG/Pt structure to 240 nV for the YIG/C60(5nm)/Pt structure. Radio-frequency transverse susceptibility experiments reveal a significant decrease in the surface perpendicular magnetic anisotropy (PMA) of the YIG film when C60 is deposited on it. These results suggest that the LSSE enhancement may be attributed to increased spin mixing conductance, the decreased PMA, and the large spin diffusion length of C60.

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