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

研究成果: Article

22 引用 (Scopus)


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.

ジャーナルPhysical Review B - Condensed Matter and Materials Physics
出版物ステータスPublished - 2006 12 13


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics