@vakaryuk

Time reversal symmetry breaking superconductivity in the honeycomb t-J model

, , , , , and . (2011)cite arxiv:1110.1183 Comment: 7 pages, 7 figures.

Abstract

We report the theoretical discovery of a novel time reversal symmetry breaking superconducting state in the t-J model on the honeycomb lattice, based on a recently developed variational method - the Grassmann tensor product state approach. As a benchmark, we use exact diagonalization (ED) and density matrix renormalization (DMRG) methods to check our results on small clusters. Remarkably, we find systematical consistency for the ground state energy as well as other physical quantities, such as the staggered magnetization. At low doping, the superconductivity coexists with anti-ferromagnetic ordering.

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Time reversal symmetry breaking superconductivity in the honeycomb t-J model

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