Tunnelling spectroscopy of the pair-density-wave states

Wan-Ju Li^1*, Ting-Kuo Lee^1,2

¹Department of Physics, National Sun Yat-sen University, Kaohsiung city, Taiwan
²Institute of Physics, Academia Sinica, Taipei, Taiwan

* Presenter:Wan-Ju Li, email:wanju1978@gmail.com

The pair density wave (PDW) state is recently proposed to be present in high temperature superconductors. Although there are many experimental evidences to support such a proposal, a direct evidence that depends on the unique property of PDW state is still lacking. In this work, we propose an experiment to probe the Andreev reflection from the metal/insulator/PDW states junction. The angular and energy dependence of the transport property of this heterostructure is calculated by using the quasiclassical Green's function. Several different PDW states and uniform superconducting states are also considered for comparison.

Keywords: pair density wave, Tunnelling spectroscopy, high temperature superconductor, Andreev reflection, quasiclassical Green's function