The AB Transition in Superfluid 3 He

W. P. Halperin*, Man Nguyen, J. W. Scott, J. A. Sauls

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The discovery of superfluidity in 3He in 1971, published in 1972, [1, 2] has influenced a wide range of investigations that extend well beyond fermionic superfluids, including electronic quantum materials, ultra-cold gases and degenerate neutron matter. Observation of thermodynamic transitions from the 3He Fermi liquid to two other liquid phases, A- and B-phases, along the melting curve of liquid and solid 3He, discovered by Osheroff, Richardson and Lee, was the very first indications of 3He superfluidity leading to their Nobel prize in 1996. This is a brief retrospective specifically focused on the AB transition.

Original languageEnglish (US)
Pages (from-to)218-225
Number of pages8
JournalJournal of Low Temperature Physics
Issue number5-6
StatePublished - Dec 2021


  • He
  • Latent heat
  • Superfluid

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics


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