Specific heat of the two-dimensional Hubbard model

被引：51

作者：

Duffy, D ^{[1
]}

Moreo, A ^{[1
]}

机构：

[1] FLORIDA STATE UNIV, MARTECH, TALLAHASSEE, FL 32306 USA

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 19期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; SQUARE-LATTICE ANTIFERROMAGNET; SPIN DYNAMICS; LINEAR TERM; TRANSITIONS; TC;

D O I：

10.1103/PhysRevB.55.12918

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quantum Monte Carlo results for the specific heat c of the two-dimensional Hubbard model are presented. At half filling it was observed that c similar to T-2 at very low-temperatures. Two distinct features were also identified: a low-temperature peak related to the spin degrees of freedom and a higher-temperature broad peak related to the charge degrees of freedom. Away from half filling the spin-induced feature slowly disappears as a function of hole doping while the charge feature moves to lower temperature. A comparison with experimental results for the high-temperature cuprates is discussed.

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收藏

页码：12918 / 12924

页数：7

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