Microwave absorption study in the ferromagnetic superconductor Gd1.4Ce0.6RuSr2Cu2O10-delta

Authors
Moreno, NO Pagliuso, PG Campoy, JCP Granado, E Rettori, C Cheong, SW Oseroff, SB
Citation
No. Moreno et al., Microwave absorption study in the ferromagnetic superconductor Gd1.4Ce0.6RuSr2Cu2O10-delta, PHYS ST S-B, 220(1), 2000, pp. 541-543
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
220
Issue
1
Year of publication
2000
Pages
541 - 543
Database
ISI
SICI code
0370-1972(200007)220:1<541:MASITF>2.0.ZU;2-D
Abstract
We have performed microwave absorption (MWA) and ferromagnetic resonance me asurements (FMR) in Gd1.4Ce0.6RuSr2Cu2O10-delta polycrystalline samples bet ween 300 and 8 K. Below the magnetic ordering temperature (T-m approximate to 89 K) a MWA is observed due to the appearance of weak ferromagnetism (WF MWA). The intensity of the WFMWA decreases as T approaches the superconduct ing (SC) state at T-c approximate to 45 K. For T less than or equal to T-c, a new and much stronger MWA (SCMWA) is found. This SCMWA may be associated to Josephson intergrain and to viscose dynamic dissipation of intragrain A brikosov vortex in the SC state.