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Topological Quantum Phase Transitions in Superconductivity on Lattices by Hatsugai, Yasuhiro; Ryu, Shinsei is a scholarly article available to read on EtoBox.

What is Topological Quantum Phase Transitions in Superconductivity on Lattices about?

Topological quantum phase transitions in superconductivity are discussed on two dimensional lattices. The main focus is on the Chern number for superconducting states. Each superconductivity is characterized by the Chern number, and the quantum phase transition is associated with topological changes of the quasiparticle Bloch function in the Brillouin zone. For the superconducting case, the Chern number has several equivalent but different topological expressions given by vortices, the Dirac monopole and strings. We demonstrate quantum phase transitions by these topological quantities both for singlet and triplet cases.

Author

Hatsugai, Yasuhiro; Ryu, Shinsei

Published

2001

Language

EN