Possible nematicity in the extremely underdoped t-J model
Yi-Hsuan Liu1,2*, Wei-Lin Tu3, Ting-Kuo Lee2
1Department of physics, National Tsing Hua University, Hsinchu, Taiwan
2Department of physics, National Sun Yat-sen University, Kaohsiung, Taiwan
3Institute of physics, University of Tokyo, Kashiwa, Japan
* Presenter:Yi-Hsuan Liu, email:b002030043@gmail.com
The existence of nematicity in underdoped cuprates has been reported by various experimental measurements such as scanning tunneling microscopy (STM) [1, 2] and resistivity [3]. Some results even have shown that nematicity exists in very lightly doped thin film, which motivates us to study the extremely underdoped t-J model and Heisenberg model via variational Monte Carlo (VMC) method and renormalization mean-field theory(RMFT). In the previous VMC study of Heisenberg model, various groups have confirmed that the uniform RVB+AFM trial wave function has the lowest energy[4]. However, we found that various competing states with C4 symmetry broken have almost the same energy with a uniform solution. Also, we will study the lightly doped case.

[1]P. Cai, et al Nat. Phys. 12, 1047 (2016).
[2]S. Mukhopadhyay et al Proc. Natl. Acad. Sci.116 (27) 13249 (2019).
[3]J. Wu, et al Nature 547, 432 (2017).
[4]A. Himeda and M. Ogata: Phys. Rev. B 60 R9935 (1999).

Keywords: cuprate, t-J model, Variational Monte Carlo, nematicity