Successive phase transitions and energy-gap formation in CeRhAs
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00018665
ID | 18665 |
file | |
creator |
Sasakawa, Tetsuya
Suemitsu, T.
Bando, Yoshio
Jung, M. H.
Fujita, Toshizo
Nakajima, Motoki
Iwasa, Kazuaki
Kohgi, Masafumi
Paul, Ch.
Berger, St.
Bauer, Ernst D.
|
abstract | Magnetic, transport, and x-ray diffraction measurements on single-crystal CeRhAs, the so-called Kondo insulator, have revealed successive transitions at T1=370, T2=235, and T3=165 K. Below T1, the unit cell is doubled along the b and c axes. Thereby, the resistivity jumps upwards and magnetic susceptibility in all the directions drops. Superlattice reflections at (0,1/3,1/3) and (1/3,0,0) appear at T,T2. The latter suddenly increases below T3 where a transport gap is enhanced. These observations indicate that the gap formation is intimately related to lattice modulations.
|
journal title |
Physical Review B - Condensed Matter and Materials Physics
|
volume | Volume 66
|
issue | Issue 4
|
start page | 041103-1
|
end page | 041103-4
|
date of issued | 2002-07-16
|
publisher | American Physical Society
|
issn | 0163-1829
|
ncid | |
publisher doi | |
language |
eng
|
nii type |
Journal Article
|
HU type |
Journal Articles
|
DCMI type | text
|
format | application/pdf
|
text version | publisher
|
rights | Copyright (c) 2002 American Physical Society.
|
relation url | |
department |
Graduate School of Advanced Sciences of Matter
|