Discommensuration-driven superconductivity in the charge density wave phases of transition-metal dichalcogenides
Chuan Chen, Lei Su, A. H. Castro Neto, Vitor M. Pereira
DOI 10.1103/PhysRevB.99.121108 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We introduce a McMillan-Ginzburg-Landau theory to describe the cooperative coexistence of charge density and superconducting order in two-dimensional crystals. With a free energy that explicitly accounts for the competition between commensurate and incommensurate ground states, we are able to map the transition between these phases and monitor the development of discommensurations in the near-commensurate regime. Attributing the enhancement of superconducting order to density wave fluctuations, we propose a coupling scheme that yields a phase diagram in qualitative agreement with experiments in conducting transition-metal dichalcogenides. The model predicts the development of nonuniform superconductivity similar to that arising from a pair density wave, with a spatial texture driven by the underlying charge density wave fluctuations.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| TiSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4 | Pressure not reported | unknown |
Similar papers
Superconductivity and hybrid soft modes in TiSe2
similarity 0.94M. Maschek et al.
Source status unknown — claims are unverified
Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2
similarity 0.94A. Kogar et al.
Source status unknown — claims are unverified
Charge-Density Wave and Superconducting Dome in TiSe2 from Electron-Phonon Interaction
similarity 0.94Matteo Calandra & Francesco Mauri
Source status unknown — claims are unverified
Maximal superconductivity in proximity to the charge density wave quantum critical point in CuxTiSe2
similarity 0.92Tae-Ho Park et al.
Source status unknown — claims are unverified
Superconducting phase diagram and the evolution of electronic structure across charge density wave in underdoped 1T−CuδTiSe2 under hydrostatic pressure
similarity 0.92Shuxiang Xu et al.
Source status unknown — claims are unverified
Pressure-induced superconductivity in semimetallic 1T−TiTe2 and its persistence upon decompression
similarity 0.92U. Dutta et al.
Source status unknown — claims are unverified