Superconductivity in Weyl Semimetal NbP: Bulk vs. Surface
Baenitz M, Schmidt M, Suess V, Felser C, Lueders K (2019)
Publication Type: Conference contribution
Publication year: 2019
Publisher: Institute of Physics Publishing
Book Volume: 1293
Conference Proceedings Title: Journal of Physics: Conference Series
Event location: Tsukuba, Ibaraki, JPN
DOI: 10.1088/1742-6596/1293/1/012002
Abstract
Transition metal monopnictides belong to the new class of semimetals where the bulk properties are determined by the presence of pairs of nodes with different chirality formed by linear dispersive states in the k-space. Beside the anomaly in the bulk magnetotransport superconductivity is frequently found in some Weyl semimetals. We found signatures of superconductivity in ac and dc magnetization measurements of highly pure and stoichiometric NbP powder. We determined the lower and upper critical field and the Ginzburg-Landau parameter. The relative small superconducting volume fraction is related to either effect of finite grain size and/or surface superconductivity. The last mentioned may originate from either off stoichiometric (Nb-rich) surface layers or a strained surface with different electronic properties. Furthermore the intrinsic normal state susceptibility is determined taking into account a paramagnetic contribution of a few ppm of magnetic impurities.
Involved external institutions
Germany (DE)How to cite
APA:
Baenitz, M., Schmidt, M., Suess, V., Felser, C., & Lueders, K. (2019). Superconductivity in Weyl Semimetal NbP: Bulk vs. Surface. In Atsutaka Maeda, Hiraku Ogino, Yoshiyuki Yoshida, Yasuhiro Iijima, Mutsuo Hidaka, Tsunehiro Hato, Naoyuki Amemiya, Tsuyoshi Wakuda, Hiroshi Miyazaki (Eds.), Journal of Physics: Conference Series. Tsukuba, Ibaraki, JPN: Institute of Physics Publishing.
MLA:
Baenitz, M., et al. "Superconductivity in Weyl Semimetal NbP: Bulk vs. Surface." Proceedings of the 31st International Symposium on Superconductivity, ISS 2018, Tsukuba, Ibaraki, JPN Ed. Atsutaka Maeda, Hiraku Ogino, Yoshiyuki Yoshida, Yasuhiro Iijima, Mutsuo Hidaka, Tsunehiro Hato, Naoyuki Amemiya, Tsuyoshi Wakuda, Hiroshi Miyazaki, Institute of Physics Publishing, 2019.
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