2007/04/18 by H. Akimoto, Hikota Akimoto, J. S. Xia +5 · 4 citations
Physics and Astronomy · #Condensed matter physics #Electron #Fermi energy #Fermi liquid theory #Magnetic field #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Quantum, superfluid, helium dynamics #Quasiparticle #Superconductivity #Thermodynamics #Viscometer #Viscosity #cond-mat.other
paper · pdf · doi:10.1103/physrevlett.99.095301
published in Physical Review Letters 99(9), 095301 (American Physical Society) · 4 pages, 4 figures
arxiv created 2007/04/18 · openalex publication_date 2007/08/31 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The viscosity is measured for a Fermi liquid, a dilute 3He\mathrm\text\ensuremath-4He mixture, under extremely high magnetic field/temperature conditions (B\ensuremath≤14.8 T, T\ensuremath≥1.5 mK). The spin-splitting energy \ensuremathμB is substantially greater than the Fermi energy kBTF; as a consequence the polarization tends to unity and s-wave quasiparticle scattering is suppressed for T\ensuremath≪TF. Using a novel composite vibrating-wire viscometer an enhancement of the viscosity is observed by a factor of more than 500 over its low-field value. Good agreement is found between the measured viscosity and theoretical predictions based upon a t-matrix formalism.