Superconducting correlations and thermodynamic properties in 2D square and triangular $t$ - $J$ modelSuperconducting correlations and thermodynamic properties in 2D square and triangular $t$-$J$ model

Masao Ogata

Bulletin of the American Physical SocietyMar 17, 20060 citations

Superconductivity in the 2D Hubbard model

S. S. Kancharla, Massimo Capone, Marcello Civelli +3 more

Bulletin of the American Physical SocietyMar 24, 20050 citations

Enhanced d-wave Superconducting Fluctuations in the 2D t-J model

W. O. Putikka

Bulletin of the American Physical SocietyMar 17, 20060 citations

Pair size and the superconducting transition in a 2D model

Betty Ng, D J Newman

Solid State CommunicationsJan 1, 19914 citations

Superconductivity in the Two-Dimensional t-J Model.

幸則太田, R. Eder, 禎通前川

日本物理學會誌Jan 1, 19953 citations

Broad Peak in the dx2−y2 Superconducting Correlation Length as a Function of Hole Concentration in the Two-Dimensional t−J Model

W. O. Putikka, Marco U. Luchini

We have calculated high temperature series to 12th order in inverse temperature for singlet superconducting correlation functions of the 2D $t\mathrm{\text{\ensuremath{-}}}J$ model with $s$ , ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$, and ${d}_{xy}$ symmetry pairs. Our calculations differ from previous work by removing disconnected pieces from the original four-point correlator and by treating the resulting pairing correlator as a matrix. We find the correlation length for ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$ pairing grows significantly with decreasing temperature and develops a broad peak as a function of doping around $\ensuremath{\delta}=0.25$ for $T/J=0.25$ at $J/t=0.4$ . The correlation lengths for $s$ and ${d}_{xy}$ symmetry remain small and do not display peaks. Antiferromagnetic spin correlations at low doping act to suppress the ${d}_{{x}^{2}\ensuremath{-}{y}^{x}}$ and ${d}_{xy}$ superconducting correlation lengths.We have calculated high temperature series to 12th order in inverse temperature for singlet superconducting correlation functions of the 2D $t\mathrm{\text{\ensuremath{-}}}J$ model with $s$, ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$, and ${d}_{xy}$ symmetry pairs. Our calculations differ from previous work by removing disconnected pieces from the original four-point correlator and by treating the resulting pairing correlator as a matrix. We find the correlation length for ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$ pairing grows significantly with decreasing temperature and develops a broad peak as a function of doping around $\ensuremath{\delta}=0.25$ for $T/J=0.25$ at $J/t=0.4$. The correlation lengths for $s$ and ${d}_{xy}$ symmetry remain small and do not display peaks. Antiferromagnetic spin correlations at low doping act to suppress the ${d}_{{x}^{2}\ensuremath{-}{y}^{x}}$ and ${d}_{xy}$ superconducting correlation lengths.

arXiv:cond-mat/0507430Physical Review LettersJun 19, 200610 citations

Superconducting correlations and thermodynamic properties in 2D square and triangular

t

J

model

We have calculated high temperature series to 12th order in inverse temperature for singlet superconducting correlation functions of the 2D $t\mathrm{\text{\ensuremath{-}}}J$ model with

s

, ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$, and

{d}_{xy}

symmetry pairs. Our calculations differ from previous work by removing disconnected pieces from the original four-point correlator and by treating the resulting pairing correlator as a matrix. We find the correlation length for ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$ pairing grows significantly with decreasing temperature and develops a broad peak as a function of doping around $\ensuremath{\delta}=0.25$ for

T/J=0.25

J/t=0.4

. The correlation lengths for

s

and

{d}_{xy}

symmetry remain small and do not display peaks. Antiferromagnetic spin correlations at low doping act to suppress the ${d}_{{x}^{2}\ensuremath{-}{y}^{x}}$ and

{d}_{xy}

superconducting correlation lengths.