Charge modulation in the background of depleted superconductivity inside vortices

Chiranjit Mahato; Anurag Banerjee; Catherine Pépin; Amit Ghosal

doi:10.1103/PhysRevB.111.134519

← Back to search

Charge modulation in the background of depleted superconductivity inside vortices

Chiranjit Mahato, Anurag Banerjee, Catherine Pépin, Amit Ghosal

DOI 10.1103/PhysRevB.111.134519 · Physical Review B

T1

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 use the Bogoliubov-de Gennes (BDG) formalism to undertake a microscopic investigation of a vortex lattice in a strongly correlated, type-II, d-wave superconductor (SC) treating strong correlation within Gutzwiller formalism. We demonstrate that in the underdoped region, the presence of subdominant charge and bond modulation introduces low-energy core states in the local density of states (LDOS) at the vortex core instead of U-shaped (i.e., with a hard gap) Mott core in a strongly correlated d-wave superconductor. Intriguingly, the LDOS at the vortex core is distinct from a metallic core with a Caroli–de Gennes–Matricon (CdGM) peak in the case of weakly coupled superconductors. We have investigated that such subdominant order changes the structure and spectrum of the d-wave vortex in the underdoped region. We have demonstrated the formation of charge and bond modulation at the vortex center by decreasing the doping and reaching an underdoped zone.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown