Appearance of Fermion Condensate in Fermi Liquids

TL;DR

This paper discusses the emergence of fermion condensates in various strongly correlated systems, comparing it to Bose-Einstein condensation, and reviews experimental evidence supporting its existence.

Contribution

It introduces the concept of fermion condensation in Fermi liquids and compiles extensive experimental evidence for its presence in different materials.

Findings

Fermion condensate appears in high-T_c and heavy-fermion metals

Properties of fermion condensates are characterized and discussed

Substantial experimental evidence supports the existence of fermion condensates

Abstract

The appearance of the fermion condensation, which can be compared to the Bose-Einstein condensation, in high-T_c metals, heavy-fermion metals and in other liquids is considered, its properties are discussed and a large number of experimental evidences in favor of the existence of the fermion condensate is presented.