Weakly Pinned Bose Glass vs Mott Insulator Phase in Superconductors

Carsten Wengel; Uwe Claus Täuber

doi:10.1103/PhysRevLett.78.4845

← Back to search

Weakly Pinned Bose Glass vs Mott Insulator Phase in Superconductors

Carsten Wengel, Uwe Claus Täuber

DOI 10.1103/PhysRevLett.78.4845 · Physical Review Letters

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 study the properties of the Bose glass phase of localized flux lines in irradiated superconductors near the matching field BΦ. Repulsive vortex interactions destroy the Mott insulator phase predicted to occur at B=BΦ. For ratios of the penetration depth to average defect distance λ/d≤1, remnants of the Mott insulator singularities remain visible in the magnetization, the bulk modulus, and the magnetization relaxation, as B is varied near BΦ. For λ≥d, the ensuing weakly pinned Bose glass is characterized by a soft Coulomb gap in the distribution of pinning energies.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown