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

By Philippe Corboz, S. White, Guifré Vidal, Matthias Troyer. 2011

190 citations recorded by the source corpus.

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.

Subfields: Atomic and Molecular Physics, and Optics, Condensed Matter Physics

View Paper: https://www.semanticscholar.org/paper/9626830c9f67bd86f1b4077b0aea2eca11c1bbad

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. S. White
2. B. Zheng
3. Garnet Kin-Lic Chan
4. Shiwei Zhang
5. Hao Shi
6. Chia-Min Chung
7. M. Qin
8. R. Noack

In Condensed Matter Physics

1. S. White
2. Hao Shi
3. Chia-Min Chung
4. B. Zheng
5. Shiwei Zhang
6. M. Qin
7. R. Noack
8. G. Ehlers

Citations in the corpus

• Stripe order in the underdoped region of the two-dimensional Hubbard model (2016, methodology): “Observables are evaluated by contracting the two-dimensional tensor network in a controlled, approximate way, using a variant (18, 61) of the corner-transfer matrix (CTM) method (62,63).”
• Ground-state phase diagram of the square lattice Hubbard model from density matrix embedding theory (2015, background): “Recent projected entangled pair state (PEPS) studies of the t-J model and Hubbard model at large U 8 suggest that inhomogeneous and homogeneous states are near degenerate at low doping and can be stabilized with small changes in the model parameters [95,101].”