Spin-dependent acoustic response in the nonunitary A1 and A2 phases of superfluid he 3 under high magnetic fields

S. Murakawa, A. Yamaguchi, M. Arai, M. Wasai, Y. Aoki, H. Ishimoto, R. Nomura, Y. Okuda, Y. Nagato, S. Higashitani, K. Nagai

研究成果: Article査読

抄録

The transverse acoustic impedance of superfluid He3 was measured in the A1 and A2 phases up to 13 T to investigate the surface states in nonunitary superfluids. The temperature dependence of the impedance was much larger in the A1 phase than in the A2 phase. This nonsymmetric behavior indicates that momentum exchange with walls for spin-down surface states is quite different from that for spin-up surface states. The spin-dependent response might be a reflection of an essential feature of the nonunitary states where gap amplitudes depend on spin states. Weak-coupling theories ignore any spin-dependent processes and do not account for the nonsymmetric behavior.

本文言語English
論文番号105304
ジャーナルPhysical review letters
114
10
DOI
出版ステータスPublished - 2015 3 10

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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