D-wave pairing in the two-dimensional Hubbard model with low filling

1992 ◽  
Vol 86 (2) ◽  
pp. 237-239 ◽  
Author(s):  
M. A. Baranov ◽  
M. Yu. Kagan
Keyword(s):  
Hubbard Model ◽  
Two Dimensional ◽  
Wave Pairing ◽  
D Wave

scholarly journals Plaquette versus ordinary d -wave pairing in the t′ -Hubbard model on a width-4 cylinder

2020 ◽  
Vol 102 (4) ◽  
Author(s):  
Chia-Min Chung ◽  
Mingpu Qin ◽  
Shiwei Zhang ◽  
Ulrich Schollwöck ◽  
Steven R. White ◽  
...  
Keyword(s):  
Hubbard Model ◽  
Wave Pairing ◽  
D Wave

scholarly journals CRITICAL CURRENT IN THE HIGH-Tc GLASS MODEL

1999 ◽  
Vol 10 (07) ◽  
pp. 1335-1345
Author(s):  
I. MORGENSTERN ◽  
W. FETTES ◽  
T. HUSSLEIN
Keyword(s):  
Hubbard Model ◽  
Critical Current ◽  
Critical Currents ◽  
Microscopic Description ◽  
High Tc ◽  
Wave Pairing ◽  
Glass Model ◽  
Current Densities ◽  
D Wave

The high-Tc glass model can be combined with the repulsive tt'–Hubbard model as microscopic description of the striped domains found in the high-Tc materials. In this picture, the finite Hubbard clusters are the origin of the d-wave pairing. In this paper we show that the glass model can also explain the critical currents usually observed in the high-Tc materials. We use two different approaches to calculate the critical current densities of the high-Tc glass model. Both lead to a strongly anisotropic critical current. Finally we give an explanation of why we nonetheless expect a nearly perfect isotropic critical current in high-Tc superconductors.

scholarly journals Phonons andd-wave pairing in the two-dimensional Hubbard model

2007 ◽  
Vol 75 (1) ◽  
Author(s):  
Carsten Honerkamp ◽  
Henry C. Fu ◽  
Dung-Hai Lee
Keyword(s):  
Hubbard Model ◽  
Two Dimensional ◽  
Wave Pairing

RENORMALISATION GROUP ANALYSIS OF THE TWO-DIMENSIONAL HUBBARD MODEL: SPIN CORRELATIONS AND D-WAVE SUPERCONDUCTIVITY

2003 ◽  
Vol 17 (28) ◽  
pp. 5279-5288
Author(s):  
W. METZNER
Keyword(s):  
Hubbard Model ◽  
Spin Density ◽  
Density Wave ◽  
Group Analysis ◽  
Interaction Strength ◽  
Renormalisation Group ◽  
Model Parameters ◽  
Two Dimensional ◽  
Effective Interactions ◽  
D Wave

The repulsive two-dimensional Hubbard model is analysed within a functional renormalisation group (RG) approach. The flow equation for the effective interactions is evaluated on 1-loop level. The effective interactions diverge at a finite energy scale which is exponentially small for small bare interactions. To analyse the nature of the instabilities signalled by the diverging interactions, we compute the flow of the superconducting susceptibilities for various pairing symmetries and also charge and spin density susceptibilities. Depending on the choice of the model parameters (hopping amplitudes, interaction strength and band-filling) we find spin density wave instabilities or d-wave superconductivity as leading instability close to half-filling. This calculation establishes the existence of d-wave superconductivity in the Hubbard model beyond doubt.

Anisotropic s- or d-wave pairing in the Hubbard model

1997 ◽  
Vol 282-287 ◽  
pp. 1703-1704 ◽  
Author(s):  
Y.M. Malozovsky ◽  
J.D. Fan
Keyword(s):  
Hubbard Model ◽  
Wave Pairing ◽  
D Wave

Phonon-inducedd-wave pairing in the two-dimensional Hubbard model

1995 ◽  
Vol 52 (5) ◽  
pp. 3079-3082 ◽  
Author(s):  
M. Mierzejewski ◽  
J. Zieliński
Keyword(s):  
Hubbard Model ◽  
Two Dimensional ◽  
Wave Pairing

d-wave pairing in the doped static charge-density-wave state on a two-dimensional square lattice

2000 ◽  
Vol 62 (14) ◽  
pp. 9648-9653 ◽  
Author(s):  
Mikio Onozawa ◽  
Yoshiyuki Fukumoto ◽  
Akihide Oguchi ◽  
Yukio Mizuno
Keyword(s):  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Square Lattice ◽  
Two Dimensional ◽  
Static Charge ◽  
Wave State ◽  
Wave Pairing ◽  
D Wave

scholarly journals Stripes and d-wave Superconductivity in the Two-dimensional Hubbard Model

2014 ◽  
Vol 58 ◽  
pp. 30-33
Author(s):  
Mitake Miyazaki ◽  
Kunihiko Yamaji ◽  
Takashi Yanagisawa
Keyword(s):  
Hubbard Model ◽  
Two Dimensional ◽  
D Wave
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