10 papers · 1 filter
Effects of Strong Correlations and Disorder in d-Wave Superconductors
Marcos Rigol, B. Sriram Shastry, Stephan Haas
We use exact diagonalization techniques to study the interplay between strong correlations, superconductivity, and disorder in a model system. We study an extension of the t-J mode…
Drude weight in systems with open boundary conditions
Marcos Rigol, B. Sriram Shastry
For finite systems, the real part of the conductivity is usually decomposed as the sum of a zero frequency delta peak and a finite frequency regular part. In studies with periodic…
Thermoelectric effects in a strongly correlated model for NaCoO
Michael R. Peterson, B. Sriram Shastry, Jan O. Haerter
Thermal response functions of strongly correlated electron systems are of appreciable interest to the larger scientific community both theoretically and technologically. Here we fo…
Finite temperature properties of the triangular lattice t-J model, applications to NaCoO
Jan O. Haerter, Michael R. Peterson, B. Sriram Shastry
We present a finite temperature () study of the t-J model on the two-dimensional triangular lattice for the negative hopping , as relevant for the electron-doped NaCoO$_2…
Strong Correlations Produce the Curie-Weiss Phase of NaCoO
Jan O. Haerter, Michael R. Peterson, B. Sriram Shastry
Within the t-J model we study several experimentally accessible properties of the 2D-triangular lattice system NaCoO, using a numerically exact canonical ensemble study of…
A Class of Parameter Dependent Commuting Matrices
B Sriram Shastry
We present a novel class of real symmetric matrices in arbitrary dimension , linearly dependent on a parameter . The matrix elements satisfy a set of nontrivial constraints t…