Successive phase transitions and energy-gap formation in CeRhAs
Physical Review B - Condensed Matter and Materials Physics Volume 66 Issue 4
Page 041103-1-041103-4
published_at 2002-07-16
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| File | |
| Title ( eng ) |
Successive phase transitions and energy-gap formation in CeRhAs
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| 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.
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 66 |
| Issue | 4 |
| Start Page | 041103-1 |
| End Page | 041103-4 |
| 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.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2002-07-16 |
| Rights |
Copyright (c) 2002 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0163-1829
[DOI] 10.1103/PhysRevB.66.041103
[NCID] AA00362255
[DOI] http://dx.doi.org/10.1103/PhysRevB.66.041103
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