|
Title
|
|
|
|
Electrical nonlinearity in colossal magnetoresistance manganite films: relevance of correlated polarons
| |
|
Author
|
|
|
|
| |
|
Abstract
|
|
|
|
| The metal-insulator (MI) transition in epitaxial thin films of La0.75Ca0.25MnO3 (LCMO) is accompanied by the appearance of an intrinsic electrical nonlinearity. The latter, probed by electrical third harmonic voltage, U3, or resistance, R3=dU3/dJ, is drastically enhanced in the vicinity of the MI transition, TMI=267 K. Applied magnetic field, B=5 T, suppresses the nonlinearity, resulting in a huge nonlinear CMR3(TMI)~105%. R3 shows a peculiar low-frequency (1 kHz) dependence, R3~(-0)n, with exponent, n, changing across the MI transition from n~1,52 for TTMI to n=1 (T |
| |
|
Language
|
|
|
|
English
| |
|
Source (journal)
|
|
|
|
Physical review : B : solid state. - Lancaster, Pa, 1970 - 1978
| |
|
Publication
|
|
|
|
Lancaster, Pa
:
2009
| |
|
ISSN
|
|
|
|
0556-2805
| |
|
DOI
|
|
|
|
10.1103/PHYSREVB.79.134413
| |
|
Volume/pages
|
|
|
|
79
:13
(2009)
, p. 134413,1-134413,8
| |
|
ISI
|
|
|
|
000265942800074
| |
|
Full text (Publisher's DOI)
|
|
|
|
| |
|
Full text (open access)
|
|
|
|
| |
|