Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
10-1-2012
Journal or Book Title
Physical Review B
Volume
86
Issue
14
First Page
144501
DOI
10.1103/PhysRevB.86.144501
Abstract
The superconductor TmNi2B2C possesses a significant fourfold basal plane anisotropy, leading to a square vortex lattice (VL) at intermediate fields. However, unlike other members of the borocarbide superconductors, the anisotropy in TmNi2B2C appears to decrease with increasing field, evident by a reentrance of the square VL phase. We have used small-angle neutron scattering measurements of the VL to study the field dependence of the anisotropy. Our results provide a direct, quantitative measurement of the decreasing anisotropy. We attribute this reduction of the basal plane anisotropy to the strong Pauli paramagnetic effects observed in TmNi2B2C and the resulting expansion of vortex cores near Hc2.
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Recommended Citation
Das, P.; Densmore, J. M.; Rastovski, C.; Schlesinger, K. J.; Laver, M.; Dewhurst, C. D.; Littrell, K.; Bud’ko, Sergey L.; Canfield, Paul C.; and Eskildsen, M. R., "Field dependence of the superconducting basal plane anisotropy of TmNi2B2C" (2012). Physics and Astronomy Publications. 627.
https://lib.dr.iastate.edu/physastro_pubs/627
Comments
This article is published as Das, P., J. M. Densmore, C. Rastovski, K. J. Schlesinger, Mark Laver, C. D. Dewhurst, K. Littrell, Serguei L. Bud'ko, Paul C. Canfield, and M. R. Eskildsen. "Field dependence of the superconducting basal plane anisotropy of TmNi 2 B 2 C." Physical Review B 86, no. 14 (2012): 144501. DOI: 10.1103/PhysRevB.86.144501.