Mesoscopic thermodynamics and kinetics of an inhomogeneous colossal magnetoresistive phase in a bulk crystal - art. no. 180408

Citation
Fm. Hess et al., Mesoscopic thermodynamics and kinetics of an inhomogeneous colossal magnetoresistive phase in a bulk crystal - art. no. 180408, PHYS REV B, 6318(18), 2001, pp. 0408
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
6318
Issue
18
Year of publication
2001
Database
ISI
SICI code
0163-1829(20010501)6318:18<0408:MTAKOA>2.0.ZU;2-R
Abstract
Persistent two-state resistance switchers were found over a narrow region i n the paramagnetic semiconductor to ferromagnetic conductor transition in a bulk La2/3Ca1/3MnO3 single crystal near thermal equilibrium. The dependenc es of switching rates on temperature and magnetic field give thermodynamic parameters similar to those found in macroscopic measurements of the first- order metal-semiconductor transition, and suggest a domain-wall-motion pict ure of the kinetics. Reproducible switchers show the role of quenched disor der in determining the inhomogeneous phase.