Fermi surface reconstruction in strongly correlated Fermi systems as a first-order phase transition

被引：5
|
作者：
Pankratov, S. S. [1 ,2 ]
Zverev, M. V. [1 ,2 ]
Baldo, M. [3 ]
机构：
[1] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia
[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
[3] Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy
来源：
JETP LETTERS | 2011年 / 93卷 / 10期
基金：
俄罗斯基础研究基金会;
关键词：
GROUND-STATE; QUANTUM; TEMPERATURE; HEAVY; LIQUIDS;
D O I：
10.1134/S0021364011100092
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A quantum phase transition in strongly correlated Fermi systems beyond the topological quantum critical point has been studied using the Fermi liquid approach. The transition takes place between topologically equivalent states with three Fermi surface sheets, but one of them is characterized by a quasiparticle halo in the quasiparticle momentum distribution n(p), and the other one is characterized by a hole pocket. It has been found that the transition between these states is a first-order phase transition for the interaction constant g and temperature T. The phase diagram in the vicinity of this transition has been constructed.
引用
收藏
页码：591 / 597
页数：7
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