Spin polarization measurements in ferromagnetic SrRuO3 using point-contact Andreev reflection technique

Masanobu Shiga, Naoto Nishimura, Yuji Inagaki, Tatsuya Kawae, Hiroshi Kambara, Kenichi Tenya

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Using the point-contact Andreev reflection (PCAR) technique, we have performed spin polarization measurements in a polycrystalline SrRuO3 to study the difference of the spin polarization between the ballistic and diffusive transport samples. PCAR spectra were measured with Nb tips for T = 4.2 K with changing the contact area mechanically. The results were well fitted by the modified Blonder-Tinkham-Klapwijk (mBTK) model. We estimate the spin polarization P ≈ 0.59, which is slightly larger than that of a single crystal film with P ≈ 0.51 due to the change of transport property.

Original languageEnglish
Article number082001
JournalJournal of Physics: Conference Series
Volume807
Issue number8
DOIs
Publication statusPublished - Apr 6 2017
Event18th International Conference on Strongly Correlated Electron Systems, SCES 2016 - Hangzhou, China
Duration: May 9 2016May 13 2016

Fingerprint

polarization
ballistics
transport properties
single crystals
estimates

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Spin polarization measurements in ferromagnetic SrRuO3 using point-contact Andreev reflection technique. / Shiga, Masanobu; Nishimura, Naoto; Inagaki, Yuji; Kawae, Tatsuya; Kambara, Hiroshi; Tenya, Kenichi.

In: Journal of Physics: Conference Series, Vol. 807, No. 8, 082001, 06.04.2017.

Research output: Contribution to journalConference article

@article{5ee6e35d01964084b6fb45f02997006d,
title = "Spin polarization measurements in ferromagnetic SrRuO3 using point-contact Andreev reflection technique",
abstract = "Using the point-contact Andreev reflection (PCAR) technique, we have performed spin polarization measurements in a polycrystalline SrRuO3 to study the difference of the spin polarization between the ballistic and diffusive transport samples. PCAR spectra were measured with Nb tips for T = 4.2 K with changing the contact area mechanically. The results were well fitted by the modified Blonder-Tinkham-Klapwijk (mBTK) model. We estimate the spin polarization P ≈ 0.59, which is slightly larger than that of a single crystal film with P ≈ 0.51 due to the change of transport property.",
author = "Masanobu Shiga and Naoto Nishimura and Yuji Inagaki and Tatsuya Kawae and Hiroshi Kambara and Kenichi Tenya",
year = "2017",
month = "4",
day = "6",
doi = "10.1088/1742-6596/807/8/082001",
language = "English",
volume = "807",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "8",

}

TY - JOUR

T1 - Spin polarization measurements in ferromagnetic SrRuO3 using point-contact Andreev reflection technique

AU - Shiga, Masanobu

AU - Nishimura, Naoto

AU - Inagaki, Yuji

AU - Kawae, Tatsuya

AU - Kambara, Hiroshi

AU - Tenya, Kenichi

PY - 2017/4/6

Y1 - 2017/4/6

N2 - Using the point-contact Andreev reflection (PCAR) technique, we have performed spin polarization measurements in a polycrystalline SrRuO3 to study the difference of the spin polarization between the ballistic and diffusive transport samples. PCAR spectra were measured with Nb tips for T = 4.2 K with changing the contact area mechanically. The results were well fitted by the modified Blonder-Tinkham-Klapwijk (mBTK) model. We estimate the spin polarization P ≈ 0.59, which is slightly larger than that of a single crystal film with P ≈ 0.51 due to the change of transport property.

AB - Using the point-contact Andreev reflection (PCAR) technique, we have performed spin polarization measurements in a polycrystalline SrRuO3 to study the difference of the spin polarization between the ballistic and diffusive transport samples. PCAR spectra were measured with Nb tips for T = 4.2 K with changing the contact area mechanically. The results were well fitted by the modified Blonder-Tinkham-Klapwijk (mBTK) model. We estimate the spin polarization P ≈ 0.59, which is slightly larger than that of a single crystal film with P ≈ 0.51 due to the change of transport property.

UR - http://www.scopus.com/inward/record.url?scp=85018332700&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018332700&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/807/8/082001

DO - 10.1088/1742-6596/807/8/082001

M3 - Conference article

AN - SCOPUS:85018332700

VL - 807

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 8

M1 - 082001

ER -