Broadening of the surface Andreev bound states band of superfluid 3He-B on a partially specular wall

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

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


A measurement of the surface Andreev bound states of the superfluid 3He-B phase under different boundary conditions is presented. Transverse-acoustic impedance spectroscopy was used to determine the bandwidth of the bound states on a wall with various specularities. It was found that the band was broader for larger specularity and filled up the superfluid gap above a critical specularity. Specularity was controlled by coating the wall with thin layers of 4H e and was evaluated separately using acoustic impedance measurement in the normal-fluid phase.

Original languageEnglish
Article number214516
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 2008 Dec 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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