Publication Date
4-1-2017
DOI
10.1103/PhysRevB.95.134505
Journal Title
Physical Review B
Volume Number
95
Issue Number
13
First Page
134505
Abstract
We image vortex creep at very low temperatures using scanning tunneling microscopy in the superconductor Rh9In4S4 (Tc=2.25K). We measure the superconducting gap of Rh9In4S4, finding Δ≈0.33meV, and image a hexagonal vortex lattice up to close to Hc2, observing slow vortex creep at temperatures as low as 150 mK. We estimate thermal and quantum barriers for vortex motion and show that thermal fluctuations likely cause vortex creep, in spite of being at temperatures T/Tc
Publisher
Iowa State University Digital Repository, Ames IA (United States)
