Nodal-antinodal dichotomy and the two gaps of a superconducting doped Mott insulator

被引：69

作者：

Civelli, M. ^{[1
]}

Capone, M. ^{[2
,3
]}

Georges, A. ^{[4
]}

Haule, K. ^{[5
,6
]}

Parcollet, O. ^{[7
]}

Stanescu, T. D. ^{[8
]}

Kotliar, G. ^{[5
,6
]}

机构：

[1] Inst Max Von Laue Paul Langevin, Theory Grp, F-38042 Grenoble, France

[2] Univ Roma La Sapienza, SMC, CNR, INFM, I-00185 Rome, Italy

[3] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy

[4] Ecole Polytech, Ctr Phys Theor, CNRS, F-91128 Palaiseau, France

[5] Rutgers State Univ, Dept Phys, Piscataway, NJ 08854 USA

[6] Rutgers State Univ, Ctr Mat Theory, Piscataway, NJ 08854 USA

[7] CEA Saclay, CEA DSM SPhT CNRS SPM URA 2306, Serv Phys Theor, F-91191 Gif Sur Yvette, France

[8] Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.100.046402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the superconducting state of the hole-doped two-dimensional Hubbard model using cellular dynamical mean-field theory, with the Lanczos method as impurity solver. In the underdoped regime, we find a natural decomposition of the one-particle (photoemission) energy gap into two components. The gap in the nodal regions, stemming from the anomalous self-energy, decreases with decreasing doping. The antinodal gap has an additional contribution from the normal component of the self-energy, inherited from the normal-state pseudogap, and it increases as the Mott insulating phase is approached.

引用

页数：4

共 43 条

[1] Antiferromagnetic to superconducting phase transition in the hole- and electron-doped Hubbard model at zero temperature [J].

Aichhorn, M. ;

Arrigoni, E. ;

Potthoff, M. ;

Hanke, W. .

PHYSICAL REVIEW B, 2006, 74 (02)

[2] Superconducting gap in the hubbard model and the two-gap energy scales of High-Tc cuprate superconductors [J].

Aichhorn, M. ;

Arrigoni, E. ;

Huang, Z. B. ;

Hanke, W. .

PHYSICAL REVIEW LETTERS, 2007, 99 (25)

[3] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[4]

Bennemann K. H., 2004, PHYS SUPERCONDUCTORS, VII

[5] Breakup of the Fermi surface near the Mott transition in low-dimensional systems [J].

Berthod, C. ;

Giamarchi, T. ;

Biermann, S. ;

Georges, A. .

PHYSICAL REVIEW LETTERS, 2006, 97 (13)

[6] Surface impedance studies of YBCO [J].

Bonn, DA ;

Kamal, S ;

Bonakdarpour, A ;

Liang, RX ;

Hardy, WN ;

Homes, CC ;

Basov, DN ;

Timusk, T .

CZECHOSLOVAK JOURNAL OF PHYSICS, 1996, 46 :3195-3202

[7] EXACT DIAGONALIZATION APPROACH TO CORRELATED FERMIONS IN INFINITE DIMENSIONS - MOTT TRANSITION AND SUPERCONDUCTIVITY [J].

CAFFAREL, M ;

KRAUTH, W .

PHYSICAL REVIEW LETTERS, 1994, 72 (10) :1545-1548

[8] Competition between d-wave superconductivity and antiferromagnetism in the two-dimensional Hubbard model [J].

Capone, M. ;

Kotliar, G. .

PHYSICAL REVIEW B, 2006, 74 (05)

[9] High TC:: The mystery that defies solution [J].

Cho, Adrian .

SCIENCE, 2006, 314 (5802) :1072-1075

[10] Dynamical breakup of the Fermi surface in a doped Mott insulator [J].

Civelli, M ;

Capone, M ;

Kancharla, SS ;

Parcollet, O ;

Kotliar, G .

PHYSICAL REVIEW LETTERS, 2005, 95 (10)

← 1 2 3 4 5 →