A Non-Paramagnon Approach to Two-Dimensional Normal-Liquid ^3He and the Analysis of Heat Capacity Data

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概要

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• Stitaatrlated by recent experiraaents on the heat capacity of 'He adsorbed on 'He precoatedHectorite xve shall sttrdy the thertnodynauaaics of strongI3' inter?tcting ferunions in txvo-ditaaension(2D) at loxv temperatttres. We shall ['octrs on spin flucttrations (SF) and resort to the randornphase approxinaation (RPA) to obtain tlae therraaodynataaic potential. To take ftrll accotrnt of timedegree of freedouaa of' SF, integrals incltrding tlae RPA strsceptibility are calctrlated ntrmericallyoxzer the effectively entire energy-naozaaenttrtn space withotrt itaaposing the conventional paraumagnon approxiraaation or the lilce. In addition to the ]-linear tertaa, we have fotrnd that the heatcapacity as well as the entropy develop T'-teruaas at very loxv temperatttres for T< T" andTlog'Z'-tertns xvhich take over tlae fortner for T >T', xvhere T' is the crossover temperaturedefined ntrmerically. XX7e have cozmpared otrr restzlts f'or heat capacity with those obtained experimentally and, as a first finding, located T log ]-terttu as predicted. Secotudly, in the frame workof Stoner-Htrbbard or Landatr's Fernai liqttid theory, xve have proposed and carried otrt a methodof analysis of the data to evaltrate the pararneters of botla theories.

• 社団法人日本物理学会の論文
• 1997-12-15

著者

• Ogura Masanori

  Department Of Basic Sciences Graduate School Of Arts And Sciences University Of Tokyo

• Namaizawa H

  Department Of Basic Sciences Granduate School Of Arts And Sciences University Of Tokyo

• Namaizawa Hiroshi

  Department Of Mathematical Physics College Of Technology Seikei University

• Namaizawa Hiroshi

  Department of Basic Sciences,Granduate School of Arts and Sciences,University of Tokyo

関連論文

• Perturbation Expansion of the Ground State Energy of Solid Helium
• A Non-Paramagnon Approach to Two-Dimensional Normal-Liquid ^3He and the Analysis of Heat Capacity Data

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