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arXiv · 1908.10000

Stable diagonal stripes in the t-J model at $\bar{n}_h$=1/8 doping from fPEPS calculations

Shao-Jun Dong·Chao Wang·Yong-Jian Han·Chao Yang·Lixin He
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Abstract

We investigate the 2D t-J model at a hole doping of $\bar{n}_h$=1/8 using recently developed high accuracy fermionic projected entangled pair states(fPEPS) method. By applying stochastic gradient descent method combined with Monte Carlo sampling technique, we obtain the ground state hole energy $E_{\rm hole}$=-1.6186 for $J/t$=0.4. We show that the ground state has stable diagonal stripes instead of vertical stripes with width of 4 unit cells, and stripe filling $ρ_l$=0.5. We further show that the long range superconductivity order is suppressed at this point.

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Shao-Jun Dong, Chao Wang, Yong-Jian Han, Chao Yang, Lixin He. 2019-08-27. Stable diagonal stripes in the t-J model at $\bar{n}_h$=1/8 doping from fPEPS calculations. https://arxiv.org/abs/1908.10000

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