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We study the pseudo-spin of electron pair in superconducting transition-metaldichalcogenide monolayers and show that the pseudo-spin affects the electrictransport property of lateral heterojunction of the superconducting andmetallic monolayers. The pseudo-spins of two electrons forming a Cooper pairare parallel to each other unlike the real spins being anti-parallel. In thelateral heterojunction, the electronic transport with forming a Cooper pair,the Andreev reflection, is suppressed with the Fermi level crossing the valenceband near the edge in the metallic monolayer. We numerically investigate theelectric transport property of the lateral heterojunctions of semiconductingand superconducting transition-metal dichalcogenides, MoSe$_2$ monolayer andNbSe$_2$ monolayer with the charge doping, respectively. We find the signchange of conductance difference between the normal and superconducting phasesby varying the charge density and show that the sign change is resulted fromthe pseudo-spin triplet superconductivity.

physical review. b./physical review. b

Pseudo-spin triplet superconductivity in transition-metal dichalcogenide  monolayers and Andreev reflection in the lateral heterostructures of  2$H$-NbSe$_2$