Temperature evolution of the charge and spin transport in Cu/Nb interface

Masayuki Ishitaki, Kohei Ohnishi, Takashi Kimura

Research output: Contribution to journalArticle

Abstract

The transport properties for the charge and spin currents in a normal-metal/superconductor interface have been investigated by using a nano-pillar based lateral spin valve. Owing to the efficient reduction of the Joule heating, we were able to observe the temperature and bias-current dependences of the spin transport in the Cu/Nb bilayer system. From the temperature dependence of the spin signal, the superconducting gap of the Nb in contact with Cu was found to open gradually with decreasing the temperature. We also found that the inhomogeneous superconducting property produces the significant temperature and field dependences of the background signal in the nonlocal measurement around the transition temperature.

Original languageEnglish
Article number060310
JournalJapanese Journal of Applied Physics
Volume57
Issue number6
DOIs
Publication statusPublished - Jun 1 2018

Fingerprint

Temperature
temperature dependence
Joule heating
temperature
Bias currents
Transport properties
Superconducting materials
Superconducting transition temperature
temperature distribution
transport properties
transition temperature
Metals
metals

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Temperature evolution of the charge and spin transport in Cu/Nb interface. / Ishitaki, Masayuki; Ohnishi, Kohei; Kimura, Takashi.

In: Japanese Journal of Applied Physics, Vol. 57, No. 6, 060310, 01.06.2018.

Research output: Contribution to journalArticle

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