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Search for superconductivity in LaNiP2 (P=Bi, Sb) thin films grown by reactive molecular beam epitaxy

Kurian, J. and Buckow, A. and Retzlaff, R. and Alff, L. (2013):
Search for superconductivity in LaNiP2 (P=Bi, Sb) thin films grown by reactive molecular beam epitaxy.
In: Physica C: Superconductivity, Elsevier Science Publishing, pp. 171-174, 484, ISSN 09214534, [Online-Edition: http://dx.doi.org/10.1016/j.physc.2012.03.003],
[Article]

Abstract

We have explored the possibility of using reactive molecular beam epitaxy (RMBE) as a synthesis technique for the search for arsenic free pnictide superconductors. High quality epitaxial thin films of LaNiBi2 were successfully grown on (1 0 0) MgO substrates by RMBE. The films were (0 0 l) oriented and the epitaxial nature of the films was confirmed by RHEED and X-ray diffraction measurements. The LaNiBi2 thin films grown on (1 0 0) MgO shows that the a-axis of the films were 45° rotated with respect to MgO. The Ni deficient films gave a Tc(0) of 3.1 K. We have successfully substituted Bi by Sb and have grown high quality epitaxial thin films of LaNiSb2. However, the LaNiSb2 thin films did not show any superconductivity down to 1.5 K.

Item Type: Article
Erschienen: 2013
Creators: Kurian, J. and Buckow, A. and Retzlaff, R. and Alff, L.
Title: Search for superconductivity in LaNiP2 (P=Bi, Sb) thin films grown by reactive molecular beam epitaxy
Language: English
Abstract:

We have explored the possibility of using reactive molecular beam epitaxy (RMBE) as a synthesis technique for the search for arsenic free pnictide superconductors. High quality epitaxial thin films of LaNiBi2 were successfully grown on (1 0 0) MgO substrates by RMBE. The films were (0 0 l) oriented and the epitaxial nature of the films was confirmed by RHEED and X-ray diffraction measurements. The LaNiBi2 thin films grown on (1 0 0) MgO shows that the a-axis of the films were 45° rotated with respect to MgO. The Ni deficient films gave a Tc(0) of 3.1 K. We have successfully substituted Bi by Sb and have grown high quality epitaxial thin films of LaNiSb2. However, the LaNiSb2 thin films did not show any superconductivity down to 1.5 K.

Journal or Publication Title: Physica C: Superconductivity
Volume: 484
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Reactive molecular beam epitaxy, Pnictide superconductors, Thin films
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 07 Jan 2014 12:31
Official URL: http://dx.doi.org/10.1016/j.physc.2012.03.003
Additional Information:

Proceedings of the 24th International Symposium on Superconductivity (ISS2011)

Identification Number: doi:10.1016/j.physc.2012.03.003
Funders: This work is supported by DFG (Deutsche Forschungsgemeinschaft), Priority Program on Pnictide Superconductors SPP 1458.
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