CLASSICAL BEHAVIOR OF TWO-DIMENSIONAL LIQUID 3He NEAR A QUANTUM CRITICAL POINT

被引：0
|
作者：
Clark, J. W. [1 ,2 ,3 ]
Khodel, V. A. [2 ,3 ,4 ]
Zverev, M. V. [4 ]
机构：
[1] Univ Madeira, Ctr Ciencias Matemat, Funchal, Madeira, Portugal
[2] Washington Univ, Dept Phys, St Louis, MO 63130 USA
[3] Washington Univ, McDonnell Ctr Space Sci, St Louis, MO 63130 USA
[4] Russian Res Ctr, Kurchatov Inst, Moscow 123182, Russia
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2013年 / 27卷 / 29期
基金：
俄罗斯基础研究基金会;
关键词：
Strongly-correlated Fermi systems; non-Fermi-liquid behavior; quantum critical point; liquid He-3 films; Dulong-Petit specific heat; transverse zero sound; CORRELATED FERMI SYSTEMS; HEAT-CAPACITY; HE-3; FILMS;
D O I：
10.1142/S021797921347005X
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Non-Fermi-liquid (NFL) behavior of the specific heat C(T) of two-dimensional (2D) liquid He-3, first uncovered in measurements almost 20 years ago, is explained in terms of intrinsic properties of this system that emerge when its density rises and the liquid becomes strongly correlated. The occurrence of a T-independent beta term in C(T) is attributed to satisfaction of the conditions for Dulong-Petit behavior by the boson part of the free energy. This unexpected classicality stems from softening of the transverse zero-sound mode (TZSM) in the density region where the anomaly in C(T), associated with a quantum critical point (QCP), is observed.
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页数：10
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