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  Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4

Qi, Y., Shi, W., Werner, P., Naumov, P. G., Schnelle, W., Wang, L., et al. (2018). Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4. npj Quantum Materials, 3: 4, pp. 1-6. doi:10.1038/s41535-018-0078-3.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-B858-E Version Permalink: http://hdl.handle.net/21.11116/0000-0000-B860-4
Genre: Journal Article

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 Creators:
Qi, Yanpeng1, Author              
Shi, Wujun1, Author              
Werner, Peter2, Author
Naumov, Pavel G.1, Author              
Schnelle, Walter3, Author              
Wang, Lei1, Author              
Rana, Kumari Gaurav2, Author
Parkin, Stuart2, Author
Medvedev, Sergiy A.4, Author              
Yan, Binghai5, Author              
Felser, Claudia6, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
4Sergiy Medvediev, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863438              
5Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              
6Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Superconductivity and topological quantum states are two frontier fields of research in modern condensed matter physics. The realization of superconductivity in topological materials is highly desired; however, superconductivity in such materials is typically limited to two-dimensional or three-dimensional materials and is far from being thoroughly investigated. In this work, we boost the electronic properties of the quasi-one-dimensional topological insulator bismuth iodide beta-Bi4I4 by applying high pressure. Superconductivity is observed in beta-Bi4I4 for pressures, where the temperature dependence of the resistivity changes from a semiconducting- like behavior to that of a normal metal. The superconducting transition temperature T-c increases with applied pressure and reaches a maximum value of 6 K at 23 GPa, followed by a slow decrease. Our theoretical calculations suggest the presence of multiple pressure-induced topological quantum phase transitions as well as a structural-electronic instability.

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Language(s): eng - English
 Dates: 2018-01-302018-01-30
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1038/s41535-018-0078-3
 Degree: -

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Title: npj Quantum Materials
Source Genre: Journal
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Publ. Info: [London] : Nature Publishing Group
Pages: - Volume / Issue: 3 Sequence Number: 4 Start / End Page: 1 - 6 Identifier: Other: 2397-4648
CoNE: /journals/resource/2397-4648