Effective 2D thickness for the Berezinskii-Kosterlitz-Thouless-like transition in a highly underdoped La${}_{2-x}$Sr${}_x$CuO${}_4$

P. G. Baity, Xiaoyan Shi, Zhenzhong Shi +2

The nature of the superconducting transition in highly underdoped thick films of La${}_{2-x}$Sr${}_x$CuO${}_4$ ($x=0.07$ and 0.08) has been investigated using the in-plane transport meas…