Publication

Stripes in the two-dimensional t-J model with infinite projected entangled-pair states

2011
Journal Articles

Abstract

We simulate the t-J model in two dimensions by means of infinite projected entangled-pair states (iPEPS) generalized to arbitrary unit cells, finding results similar to those previously obtained by the density-matrix renormalization group (DMRG) for wide ladders. In particular, we show that states exhibiting stripes, that is, a unidirectional modulation of hole-density and antiferromagnetic order with a p-phase shift between adjacent stripes, have a lower variational energy than uniform phases predicted by variational and fixed-node Monte Carlo simulations. For a fixed unit-cell size the energy per hole is minimized for a hole density rho(l) similar to 0.5 per unit length of a stripe. The superconducting order parameter is maximal around rho(l) similar to 0.75-0.8.

Official source

https://infoscience.epfl.ch/entities/publication/31f325f1-8ff9-46ba-91d8-42501e67d409

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2011
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/31f325f1-8ff9-46ba-91d8-42501e67d409

About this result

Related concepts (32)

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