Effect of Half-Quantum Vortices on Magnetoresistance of Perforated Superconducting Films

Victor Vakaryuk; Valerii Vinokur

doi:10.1103/PhysRevLett.107.037003

← Back to search

Effect of Half-Quantum Vortices on Magnetoresistance of Perforated Superconducting Films

Victor Vakaryuk, Valerii Vinokur

DOI 10.1103/PhysRevLett.107.037003 · 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

Recent cantilever magnetometry measurements of annular micron-size samples of Sr2RuO4 have revealed evidence for the existence of half-quantum vortices (HQVs) in this material [J. Jang et al., Science 331, 186 (2011)]. We propose to look for HQVs in transport measurements and calculate magnetoresistance of a perforated superconducting film close to the transition temperature in the presence of HQVs. We analyze the dependence of magnetoresistance on the thermodynamic stability of HQVs which, according to Jang et al., can be varied by the application of an in-plane magnetic field and point out features which may help to identify them.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown