Superconducting Phase and Pairing Fluctuations in the Half-Filled Two-Dimensional Hubbard Model

被引：28

作者：

Sentef, Michael ^{[1
]}

Werner, Philipp ^{[2
]}

Gull, Emanuel ^{[3
]}

Kampf, Arno P. ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany

[2] ETH, CH-8093 Zurich, Switzerland

[3] Columbia Univ, Dept Phys, New York, NY 10027 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 12期

关键词：

D-WAVE SUPERCONDUCTIVITY; MEAN-FIELD THEORY; NORMAL-STATE; INSULATOR; METAL; TEMPERATURE; TRANSITIONS; DIMENSIONS; PLAQUETTE; CROSSOVER;

D O I：

10.1103/PhysRevLett.107.126401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The two-dimensional Hubbard model exhibits superconductivity with d-wave symmetry even at half-filling in the presence of a next-nearest neighbor hopping. Using plaquette cluster dynamical mean-field theory with a continuous-time quantum Monte Carlo impurity solver, we reveal the non-Fermi liquid character of the metallic phase in proximity to the superconducting state. Specifically, the low-frequency scattering rate for momenta near (pi, 0) varies nonmonotonically at low temperatures, and the dc conductivity is T linear at elevated temperatures with an upturn upon cooling. Evidence is provided that pairing fluctuations dominate the normal-conducting state even considerably above the superconducting transition temperature.

引用

页数：5

共 45 条

[1] Abrikosov A. A., 1963, Methods of Quantum Field Theory in Statistical Physics
[2] The ALPS project release 1.3:: Open-source software for strongly correlated systems
Albuquerque, A. F.
Alet, F.
Corboz, P.
Dayal, P.
Feiguin, A.
Fuchs, S.
Gamper, L.
Gull, E.
Guertler, S.
Honecker, A.
Igarashi, R.
Koerner, M.
Kozhevnikov, A.
Laeuchli, A.
Manmana, S. R.
Matsumoto, M.
McCulloch, I. P.
Michel, F.
Noack, R. M.
Pawlowski, G.
Pollet, L.
Pruschke, T.
Schollwoeck, U.
Todo, S.
Trebst, S.
Troyer, M.
Werner, P.
Wessel, S.
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 310 (02) : 1187 - 1193
[3] [Anonymous], 2010, PHYSICS
[4] First-order Mott transition at zero temperature in two dimensions: Variational plaquette study
Balzer, M.
Kyung, B.
Senechal, D.
Tremblay, A. -M. S.
Potthoff, M.
[J]. EPL, 2009, 85 (01)
[5] Insulator-to-metal crossover in the normal state of La2-xSrxCuO4 near optimum doping
Boebinger, GS
Ando, Y
Passner, A
Kimura, T
Okuya, M
Shimoyama, J
Kishio, K
Tamasaku, K
Ichikawa, N
Uchida, S
[J]. PHYSICAL REVIEW LETTERS, 1996, 77 (27) : 5417 - 5420
[6] Competition between d-wave superconductivity and antiferromagnetism in the two-dimensional Hubbard model
Capone, M.
Kotliar, G.
[J]. PHYSICAL REVIEW B, 2006, 74 (05)
[7] First-order pairing transition and single-particle spectral function in the attractive Hubbard model
Capone, M
Castellani, C
Grilli, M
[J]. PHYSICAL REVIEW LETTERS, 2002, 88 (12) : 4 - 126403
[8] Evolution of the Dynamical Pairing across the Phase Diagram of a Strongly Correlated High-Temperature Superconductor
Civelli, M.
[J]. PHYSICAL REVIEW LETTERS, 2009, 103 (13)
[9] NONANALYTIC CONTRIBUTIONS TO THE SELF-ENERGY AND THE THERMODYNAMICS OF 2-DIMENSIONAL FERMI LIQUIDS
COFFEY, D
BEDELL, KS
[J]. PHYSICAL REVIEW LETTERS, 1993, 71 (07) : 1043 - 1046
[10] Correlation between linear resistivity and Tc in the Bechgaard salts and the pnictide superconductor Ba(Fe1-xCox)2As2
Doiron-Leyraud, Nicolas
Auban-Senzier, Pascale
de Cotret, Samuel Rene
Bourbonnais, Claude
Jerome, Denis
Bechgaard, Klaus
Taillefer, Louis
[J]. PHYSICAL REVIEW B, 2009, 80 (21)

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