Pressure driven collapse of the magnetism in the Kondo insulator UNiSn
Physical Review Volume 71
Page 020402-
published_at 2005
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| File | |
| Title ( eng ) |
Pressure driven collapse of the magnetism in the Kondo insulator UNiSn
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| Creator |
Barla A.
Sanchez J.P.
Aksungur A.
Lengsdorf R.
Plessel J.
Doyle B.P.
Ruffer R.
abd-Elmeguid M.M.
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| Source Title |
Physical Review
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| Volume | 71 |
| Start Page | 020402 |
| Abstract |
The effect of pressure on the electronic and magnetic properties of the antiferromagnetic (TN~43 K) narrow gap semiconductor UNiSn has been investigated by 119Sn Mössbauer spectroscopy and nuclear forward scattering of synchrotron radiation, electrical resistance, and x-ray diffraction. We show that the decrease of the semiconducting gap which leads to a metallic state at p~9 GPa is associated with an enhancement of TN. At higher pressures, both TN and the transferred magnetic hyperfine field decrease, with a collapse of magnetism at ~18.5 GPa. The results are explained by a volume-dependent competition between indirect Ruderman-Kittel-Kasuya-Yosida interaction and the 5f-ligand hybridization.
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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 | 2005 |
| Rights |
Copyright (c) 2006 American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1098-0121
[NCID] AA11187113
[DOI] 10.1103/PhysRevB.71.020402
[DOI] http://dx.doi.org/10.1103/PhysRevB.71.020402
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