Spectroscopic study of the surface density of states of superfluid He3 by transverse acoustic impedance measurements

Masamichi Saitoh, Yuichiro Wada, Yuki Aoki, Satoshi Murakawa, Ryuji Nomura, Yuichi Okuda

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The surface density of states (SDOS) in superfluid He3 at a diffusive wall was investigated by systematic measurements of the transverse acoustic impedance Z. The observed difference between the temperature dependence of Z in the A and B phases can be explained by a difference in the SDOS of each phase. In the B phase, an additional gap in the SDOS opened between the upper energy edge Δ* of the surface Andreev bound states band and the bulk energy gap Δ. The temperature dependence of Δ* was measured and was about 30% smaller than the theoretical value. In the A phase, a flat and gapless SDOS was confirmed experimentally.

Original languageEnglish
Article number220505
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number22
DOIs
Publication statusPublished - 2006

Fingerprint

Acoustic impedance measurement
acoustic impedance
impedance measurement
temperature dependence
Acoustic impedance
Energy gap
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Spectroscopic study of the surface density of states of superfluid He3 by transverse acoustic impedance measurements. / Saitoh, Masamichi; Wada, Yuichiro; Aoki, Yuki; Murakawa, Satoshi; Nomura, Ryuji; Okuda, Yuichi.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 74, No. 22, 220505, 2006.

Research output: Contribution to journalArticle

Saitoh, Masamichi ; Wada, Yuichiro ; Aoki, Yuki ; Murakawa, Satoshi ; Nomura, Ryuji ; Okuda, Yuichi. / Spectroscopic study of the surface density of states of superfluid He3 by transverse acoustic impedance measurements. In: Physical Review B - Condensed Matter and Materials Physics. 2006 ; Vol. 74, No. 22.
@article{2a3a2aef36b84e15a61e627da0276e87,
title = "Spectroscopic study of the surface density of states of superfluid He3 by transverse acoustic impedance measurements",
abstract = "The surface density of states (SDOS) in superfluid He3 at a diffusive wall was investigated by systematic measurements of the transverse acoustic impedance Z. The observed difference between the temperature dependence of Z in the A and B phases can be explained by a difference in the SDOS of each phase. In the B phase, an additional gap in the SDOS opened between the upper energy edge Δ* of the surface Andreev bound states band and the bulk energy gap Δ. The temperature dependence of Δ* was measured and was about 30{\%} smaller than the theoretical value. In the A phase, a flat and gapless SDOS was confirmed experimentally.",
author = "Masamichi Saitoh and Yuichiro Wada and Yuki Aoki and Satoshi Murakawa and Ryuji Nomura and Yuichi Okuda",
year = "2006",
doi = "10.1103/PhysRevB.74.220505",
language = "English",
volume = "74",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "22",

}

TY - JOUR

T1 - Spectroscopic study of the surface density of states of superfluid He3 by transverse acoustic impedance measurements

AU - Saitoh, Masamichi

AU - Wada, Yuichiro

AU - Aoki, Yuki

AU - Murakawa, Satoshi

AU - Nomura, Ryuji

AU - Okuda, Yuichi

PY - 2006

Y1 - 2006

N2 - The surface density of states (SDOS) in superfluid He3 at a diffusive wall was investigated by systematic measurements of the transverse acoustic impedance Z. The observed difference between the temperature dependence of Z in the A and B phases can be explained by a difference in the SDOS of each phase. In the B phase, an additional gap in the SDOS opened between the upper energy edge Δ* of the surface Andreev bound states band and the bulk energy gap Δ. The temperature dependence of Δ* was measured and was about 30% smaller than the theoretical value. In the A phase, a flat and gapless SDOS was confirmed experimentally.

AB - The surface density of states (SDOS) in superfluid He3 at a diffusive wall was investigated by systematic measurements of the transverse acoustic impedance Z. The observed difference between the temperature dependence of Z in the A and B phases can be explained by a difference in the SDOS of each phase. In the B phase, an additional gap in the SDOS opened between the upper energy edge Δ* of the surface Andreev bound states band and the bulk energy gap Δ. The temperature dependence of Δ* was measured and was about 30% smaller than the theoretical value. In the A phase, a flat and gapless SDOS was confirmed experimentally.

UR - http://www.scopus.com/inward/record.url?scp=33845340493&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33845340493&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.74.220505

DO - 10.1103/PhysRevB.74.220505

M3 - Article

AN - SCOPUS:33845340493

VL - 74

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 22

M1 - 220505

ER -