Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4
Qi Y, Shi W, Werner P, Naumov PG, Schnelle W, Wang L, Rana KG, Parkin S, Medvedev SA, Yan B, Felser C (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 3
Article Number: 4
Journal Issue: 1
DOI: 10.1038/s41535-018-0078-3
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 β-Bi4I4 by applying high pressure. Superconductivity is observed in β-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.
Involved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics
Germany (DE)
Germany (DE)
Max-Planck-Institut für Mikrostrukturphysik (MSP) / Max Planck Institute for Microstructure Physics
Germany (DE)
How to cite
APA:
Qi, Y., Shi, W., Werner, P., Naumov, P.G., Schnelle, W., Wang, L.,... Felser, C. (2018). Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4. npj Quantum Materials, 3(1). https://doi.org/10.1038/s41535-018-0078-3
MLA:
Qi, Yanpeng, et al. "Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4." npj Quantum Materials 3.1 (2018).
BibTeX: Download