Magnetic field as a probe of gap energy scales in YBa2Cu3O7-x

Authors
Whelan, ND Carbotte, JP
Citation
Nd. Whelan et Jp. Carbotte, Magnetic field as a probe of gap energy scales in YBa2Cu3O7-x, PHYS REV B, 62(22), 2000, pp. 15221-15225
Citations number
27
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
22
Year of publication
2000
Pages
15221 - 15225
Database
ISI
SICI code
0163-1829(200012)62:22<15221:MFAAPO>2.0.ZU;2-P
Abstract
Among high-T-c materials, the YBa2Cu3O7-x compounds are special since they have superconducting chains as well as planes. We show that a discontinuity in the density of states as a function of magnetic field may appear at a n ew energy scale, characteristic of the chain and distinct from that set by the d-wave gap. This is observable in experimental studies of the thermodyn amic properties of these systems, such as the specific heat.