Conductivity anisotropy helps to reveal the microscopic structure of a density wave at imperfect nesting

Abstract

Superconductivity or metallic state may coexist with density wave ordering at imperfect nesting of the Fermi surface. In addition to the macroscopic spatial phase separation, there are, at least, two possible microscopic structures of such coexistence: (i) the soliton-wall phase and (ii) the ungapped Fermi-surface pockets. We show that the conductivity anisotropy allows to distinguish between these two microscopic density-wave structures. The results obtained may help to analyze the experimental observations in layered organic metals (TMTSF)${}_2$PF${}_6$, (TMTSF)${}_2$ClO${}_4$, $\alpha$-(BEDT-TTF)${}_2$KHg(SCN)${}_4$ and in other compounds.

arXiv comment4 pages, 2 figures

References in corpus (10)

• Electronic crystals: an experimental overview
• Spontaneous breaking of isotropy observed in the electronic transport of rare-earth tritellurides
• Coexistence of Superconductivity and Antiferromagnetism Probed by Simultaneous NMR and Electrical Transport in (TMTSF)2PF6
• Domain walls at the spin density wave endpoint of the organic superconductor (TMTSF)2PF6 under pressure
• Superconductivity in the charge-density-wave state of the organic metal α-(BEDT-TTF)2KHg(SCN)4
• Soliton phase near antiferromagnetic quantum critical point in Q1D conductors
• Coexistence of Superconductor and Spin-Density Wave in (TMTSF)2ClO4: Spatial Structure of the Two-phase State
• Properties of superconductivity on the density wave background with small ungapped Fermi surface pockets
• Nature of superconducting state in the new phase in (TMTSF)${}_2$PF${}_6$ under pressure
• Superconductivity on the density wave background with soliton-wall structure

Cited by in corpus (1)

• Conductivity of anisotropic inhomogeneous superconductors above critical temperature