2008/06/09 by I. A. Fomin
Physics and Astronomy · #Atomic and Subatomic Physics Research #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat.dis-nn #cond-mat.supr-con
paper · pdf · doi:10.1134/s0021364008130134
9 pages, 1 figure, Russian version accepted for publication in "Pis`ma v ZhETF"
arxiv created 2008/06/09 · openalex publication_date 2008/09/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
It has been shown by the example of 3He in aerogel that the correlation in the position of impurities may have a considerable effect on the transition temperature T c of a Fermi fluid to an unconventional superfluid or superconducting state if the correlation radius of the system of impurities exceeds the correlation length ξ0 of the emerging superfluid phase. A decrease in T c of 3He in aerogel has been expressed in terms of the structure factor of aerogel. Taking into account the fractal structure of aerogel provides a simple formula that satisfactorily describes the observed decrease in T c.