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Influence of Spin Fluctuations Upon Heat Capacity of 2D Fermi Liquid Formed on Hectorite

Authors
  • Wada, N.1
  • Yano, H.1
  • Ogura, M.1
  • Namaizawa, H.1
  • Karaki, Y.1, 2
  • 1 University of Tokyo, Institute of Physics, Basic Science, Graduate School of Arts and Sciences, Komaba 3-8-1, Meguro-ku, Tokyo, 153, Japan , Meguro-ku, Tokyo
  • 2 University of Tokyo, Institute for Solid State Physics, Roppongi, Minato-ku, Tokyo, 176, Japan , Roppongi, Minato-ku, Tokyo
Type
Published Article
Journal
Journal of Low Temperature Physics
Publisher
Kluwer Academic Publishers-Plenum Publishers
Publication Date
Jan 01, 1998
Volume
110
Issue
1-2
Pages
357–362
Identifiers
DOI: 10.1023/A:1022549103524
Source
Springer Nature
Keywords
License
Yellow

Abstract

We measured low-temperature heat capacities of two-dimensional Fermi liquid (2D FL) formed on Hectorite down to 15mK. At a coverage where mean atomic distance is comparable to that of bulk3He liquid, we found that the temperature dependence deviates considerably from the expected linearity. To account for the deviation we carried through integrals including RPA spin susceptibility for the Stoner-Hubbard(SH) or the Landau's Fermi liquid (LFL) models over the effectively entire, energy-momentum space without imposing the paramagnon approximation or the like. We found numerically that the spin fluctuation develops a T2correction at T<T* which, at T>T*, is taken over by a Tlog T term where T* is some hundredths of TF. With these corrections we are able to interprete the data and have determined the parameters for each model consistently at the densities observed.

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