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Phys. Rev. B 67, 212504 (2003) [4 pages]

Superconductivity in magnetically ordered CeTe1.82

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M. H. Jung1,*, A. Alsmadi2, H. C. Kim3, Yunkyu Bang4,†, K. H. Ahn4, K. Umeo5, A. H. Lacerda1, H. Nakotte2, H. C. Ri3, and T. Takabatake5
1National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
2Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003, USA
3Material Science Laboratory, Korea Basic Science Institute, Taejeon 305-333, Korea
4Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
5Department of Quantum Matter, ADSM, Hiroshima University, Higashi-Hiroshima 739-8530, Japan

Received 25 March 2003; published 12 June 2003

We report the discovery of pressure-induced superconductivity in a semimetallic magnetic material CeTe1.82. The superconducting transition temperature Tc=2.7K (well below the magnetic ordering temperatures) under pressure (>2kbar) is remarkably high, considering the relatively low carrier density due to a charge-density-wave transition associated with lattice modulation. The mixed magnetic structure of antiferromagnetism coexisting with ferromagnetism can provide a clue for this high Tc. We discuss a possible theoretical model for the superconducting pairing mechanism.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.67.212504
DOI:
10.1103/PhysRevB.67.212504
PACS:
74.70.Tx, 74.25.Dw, 74.25.Ha, 74.62.Fj

*Author to whom correspondence should be addressed. Present address: MSL, Korea Basic Science Institute, Daejeon 305-333, South Korea. E-mail address: mhjung@kbsi.re.kr

†Permanent address: Department of Physics, Chonnam National University, Kwangju 500-757, Korea.

 
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