| ID | 34134 |
| FullText URL | |
| Author |
Shiotani, Y
Sarrao, J L
Zheng, Guo-qing
|
| Abstract | In order to gain insights into the origin of colossal magnetoresistance (CMR) in manganese oxides, we performed a La-139 NMR study in the double-layered compound La1.2Sr1.8Mn2O7. We find that above the Curie temperature T-C = 126 K, applying a magnetic field induces a long-range ferromagnetic order that persists up to T = 330 K. The critical field at which the induced magnetic moment is saturated coincides with the field at which the CMR effect reaches a maximum. Our results therefore indicate that the CMR observed above T-C in this compound is due to the field-induced ferromagnetism that produces a metallic state via the double exchange interaction. |
| Keywords | equal-to 0.50
giant magnetoresistance
resistivity
manganites
phase
crystal
oxides
|
| Note | Digital Object Identifer:10.1103/PhysRevLett.96.057203
Published with permission from the copyright holder. This is the institute's copy, as published in Physical Review Letters, February 2006, Volume 96, Issue 5, Pages 4. Publisher URL:http://dx.doi.org/10.1103/PhysRevLett.96.057203 Direct access to Thomson Web of Science record Copyright © 2006 The American Physical Society. All rights reserved. |
| Published Date | 2006-2
|
| Publication Title |
Physical Review Letters
|
| Volume | volume96
|
| Issue | issue5
|
| Content Type |
Journal Article
|
| language |
English
|
| Refereed |
True
|
| DOI | |
| Web of Science KeyUT | |
| Submission Path | physics_general/17
|
