Surface Majorana cone of the superfluid 3He B phase

Satoshi Murakawa, Yuichiro Wada, Yuta Tamura, Masahiro Wasai, Masamichi Saitoh, Yuki Aoki, Ryuji Nomura, Yuichi Okuda, Yasushi Nagato, Mikio Yamamoto, Seiji Higashitani, Katsuhiko Nagai

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

The superfluid 3He B phase, one of the oldest unconventional fermionic condensates experimentally realized, is recently predicted to support Majorana fermion surface states. Majorana fermion, which is characterized by the equivalence of particle and antiparticle, has a linear dispersion relation referred to as the Majorana cone. We measured the transverse acoustic impedance Z of the superfluid 3He B phase changing its boundary condition and found a growth of peak in Z on a higher specularity wall. Our theoretical analysis indicates that the variation of Z is induced by the formation of the cone-like dispersion relation and thus confirms the important feature of the Majorana fermion in the specular limit.

Original languageEnglish
Article number013602
JournalJournal of the Physical Society of Japan
Volume80
Issue number1
DOIs
Publication statusPublished - 2011 Jan

Keywords

  • Acoustic impedance
  • Majorana cone
  • Majorana fermions
  • Superfluid He
  • Surface andreev bound states

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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