検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Oscillatory Nernst effect in Pt$$|$$ferrite$$|$$cuprate-superconductor trilayer films

白金/フェライト/高温超電導体3層膜における磁場によるNernst効果電圧の振動

塩見 雄毅*; Lustikova, J.*; 齊藤 英治

Shiomi, Yuki*; Lustikova, J.*; Saito, Eiji

Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to magnetic fields in Pt$$|$$LiFe$$_5$$O$$_8$$ (Pt$$|$$LFO) bilayers grown on a cuprate superconductor YBa$$_2$$Cu$$_3$$O$$_{7-x}$$ (YBCO). At high temperatures above the superconducting transition temperature ($$T_C$$) of YBCO, spin Seebeck voltages originating in Pt$$|$$LFO layers are observed. As temperature decreases well below $$T_C$$, the spin Seebeck voltage is suppressed and unconventional periodic voltage oscillation as a function of magnetic fields appears; such an oscillation emerging along the Hall direction in the superconducting state has not been observed yet. Dynamics of superconducting vortices pinned by surface precipitates seems responsible for the oscillatory Nernst effect.

Access

:

- Accesses

InCites™

:

パーセンタイル:21.37

分野:Multidisciplinary Sciences

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.