Competing states in the t-J model: uniform D-wave state versus stripe state

Variational studies of the t-J model on the square lattice based on infinite projected-entangled pair states confirm an extremely close competition between a uniform d-wave superconducting state and different stripe states. The site-centered stripe with an in-phase d-wave order has an equal or only...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 113; no. 4; p. 046402
Main Authors Corboz, Philippe, Rice, T M, Troyer, Matthias
Format Journal Article
LanguageEnglish
Published United States 25.07.2014
Online AccessGet more information

Cover

More Information
Summary:Variational studies of the t-J model on the square lattice based on infinite projected-entangled pair states confirm an extremely close competition between a uniform d-wave superconducting state and different stripe states. The site-centered stripe with an in-phase d-wave order has an equal or only slightly lower energy than the stripe with antiphase d-wave order. The optimal stripe filling is not constant but increases with J/t. A nematic anisotropy reduces the pairing amplitude and the energies of stripe phases are lowered relative to the uniform state with increasing nematicity.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.113.046402