A quantum critical superconducting phase transition in quasi-two-dimensional systems with Dirac electrons

被引：8

作者：

Marino, E. C. ^{[1
]}

Nunes, Lizardo H. C. M. ^{[1
]}

机构：

[1] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, Brazil

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 460卷

关键词：

Dirac electrons; superconductivity; quantum criticality;

D O I：

10.1016/j.physc.2007.03.227

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a theory describing the superconducting (SC) interaction of Dirac electrons in a quasi-two-dimensional system consisting of a stack of N planes. The occurrence of a SC phase is investigated both at T = 0 and T not equal 0. At T = 0, we find a quantum phase transition connecting the normal and SC phases. Our theory qualitatively reproduces the SC phase transition occurring in the underdoped regime of the high-T-c cuprates. This fact points to the possible relevance of Dirac electrons in the mechanism of high-T-c superconductivity. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1101 / 1102

页数：2

共 9 条

[1] Charge density wave, superconductivity, and anomalous metallic behavior in 2D transition metal dichalcogenides [J].

Castro Neto, AH .

PHYSICAL REVIEW LETTERS, 2001, 86 (19) :4382-4385

[2] Magnetic field induced gap and kink behavior of thermal conductivity [J].

Ferrer, EJ ;

Gusynin, VP ;

De La Incera, V .

MODERN PHYSICS LETTERS B, 2002, 16 (04) :107-116

[3] Quasiparticles in the vortex lattice of unconventional superconductors: Bloch waves or Landau levels? [J].

Franz, M ;

Tesanovic, Z .

PHYSICAL REVIEW LETTERS, 2000, 84 (03) :554-557

[4] Algebraic Fermi liquid from phase fluctuations:: "Topological" fermions, vortex "Berryons," and QED3 theory of cuprate superconductors -: art. no. 257003 [J].

Franz, M ;

Tesanovic, Z .

PHYSICAL REVIEW LETTERS, 2001, 87 (25) :257003-1

[5] Unconventional integer quantum Hall effect in graphene [J].

Gusynin, VP ;

Sharapov, SG .

PHYSICAL REVIEW LETTERS, 2005, 95 (14)

[6] Magnetic oscillations in planar systems with the Dirac-like spectrum of quasiparticle excitations. II. Transport properties [J].

Gusynin, VP ;

Sharapov, SG .

PHYSICAL REVIEW B, 2005, 71 (12)

[7] Quantum criticality and superconductivity in quasi-two-dimensional Dirac electronic systems [J].

Marino, EC ;

Nunes, LHCM .

NUCLEAR PHYSICS B, 2006, 741 (03) :404-420

[8]

PERES NMR, CONDMAT0506709

[9] CONDENSED-MATTER SIMULATION OF A 3-DIMENSIONAL ANOMALY [J].

SEMENOFF, GW .

PHYSICAL REVIEW LETTERS, 1984, 53 (26) :2449-2452

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