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  Electronic properties across the first-order phase transition in Fe1.11Te

Rößler, S., Cherian, D., Nair, H. S., Bhat, H. L., Elizabeth, S., & Wirth, S. (2012). Electronic properties across the first-order phase transition in Fe1.11Te. Journal of Physics: Conference Series, 400(2): 022099, pp. 022099-1-022099-4. doi:10.1088/1742-6596/400/2/022099.

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 Creators:
Rößler, S.1, Author              
Cherian, D., Author
Nair, H. S., Author
Bhat, H. L., Author
Elizabeth, S., Author
Wirth, S.2, Author              
Affiliations:
1Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863445              
2Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863460              

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 Abstract: We present electrical resistivity as well as scanning tunneling microscopy and spectroscopy (STM/S) studies on Fe 1.11 Te single crystals. For this composition, a first-order phase transition is observed around 57 K This transition is associated with a structural change from the tetragonal P 4/ nmm to the monoclinic P 2 1 / m space group. Also at this temperature, the compound becomes antiferromagnetic ( T N = 57 K) and the temperature dependence of the resistivity changes from log(− T ) to T 2 . This observation suggests that the material becomes a Fermi-liquid metal at low temperatures. Metallic behavior is also confirmed in the I − V characteristics of the scanning tunneling spectroscopy measurements taken at T < T N on an atomically resolved surface.

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Language(s): eng - English
 Dates: 2012-09-30
 Publication Status: Published in print
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 Identifiers: eDoc: 641382
DOI: 10.1088/1742-6596/400/2/022099
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Title: Journal of Physics : Conference Series
Source Genre: Journal
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Pages: - Volume / Issue: 400 (2) Sequence Number: 022099 Start / End Page: 022099-1 - 022099-4 Identifier: -