Pseudo-spin Skyrmions in the Phase Diagram of Cuprate Superconductors - Archive ouverte HAL Access content directly
Preprints, Working Papers, ... Year :

Pseudo-spin Skyrmions in the Phase Diagram of Cuprate Superconductors

Abstract

Topological states of matter are at the root of some of the most fascinating phenomena in condensed matter physics. Here we argue that skyrmions in the pseudo-spin space related to an emerging SU(2) symmetry enlighten many mysterious properties of the pseudogap phase in under-doped cuprates. We detail the role of the SU(2) symmetry in controlling the phase diagram of the cuprates, in particular how a cascade of phase transitions explains the arising of the pseudogap, superconducting and charge modulation phases seen at low temperature. We specify the structure of the charge modulations inside the vor-tex core below $T_c$ , as well as in a wide temperature region above $T_c$ , which is a signature of the skyrmion topological structure. We argue that the underlying SU(2) symmetry is the main structure controlling the emergent complexity of excitations at the pseudogap scale $T^*$. The theory yields a gapping of a large part of the anti-nodal region of the Brillouin zone, along with $q = 0$ phase transitions, of both nematic and loop currents characters.
Fichier principal
Vignette du fichier
1707.08497.pdf (4.15 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-01709559 , version 1 (15-02-2018)

Identifiers

Cite

Corentin Morice, Debmalya Chakraborty, Xavier Montiel, Catherine Pépin. Pseudo-spin Skyrmions in the Phase Diagram of Cuprate Superconductors. 2018. ⟨cea-01709559⟩
111 View
130 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More