P2 3 superfluids are topological

Takeshi Mizushima, Kota Masuda, Muneto Nitta

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We clarify the topology of P23 superfluids which are expected to be realized in the inner cores of neutron stars and cubic odd-parity superconductors. P23 phases include uniaxial/biaxial nematic phases and nonunitary ferromagnetic and cyclic phases. Here, we show that all the phases are accompanied by different types of topologically protected gapless fermions: surface Majorana fermions in nematic phases and a quartet of (single) itinerant Majorana fermions in the cyclic (ferromagnetic) phase. Using the superfluid Fermi liquid theory, we also demonstrate that dihedral-two and -four biaxial nematic phases are thermodynamically favored in the weak coupling limit under a magnetic field. It is shown that the tricritical point exists on the phase boundary between these two phases and may be realized in the core of realistic magnetars. We unveil the intertwining of symmetry and topology behind the mass acquisition of surface Majorana fermions in nematic phases.

本文言語English
論文番号140503
ジャーナルPhysical Review B
95
14
DOI
出版ステータスPublished - 2017 4 20

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

フィンガープリント

「P2 3 superfluids are topological」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル