Growth and characterization of R(O,F)BiS2 (R = La,
Ce, Pr, Nd) superconducting single crystals

• Authors: Masanori Nagao
• Languages of publication: EN

Abstracts

EN

R(O,F)BiS2 (R: La, Ce, Pr, Nd) superconducting
single crystals with different F concentrations are grown
using a CsCl/KCl flux. The obtained 1-2 mm-sized single
crystals have a plate-like shape and are cleavable along
the ab-plane. The crystal structure is tetragonal of space
group P4/nmm (#129). The as-grown single crystals exhibit
superconductivity at around 3–5 K. The superconducting
transition temperature increases with decreasing
the ionic radius of the R element. The superconducting
anisotropies of the R(O,F)BiS2 single crystals are estimated
to be 30–60 according to the effective mass model,
whereas the anisotropies for Ce(O,F)BiS2 single crystals
are 13–21. The c-axis transport measurements of a single
crystal of Pr(O,F)BiS2 under a magnetic field parallel to the
ab-plane reveal a “lock-in” state attributed to the Josephson
vortex flow. Furthermore, the Ce(O,F)BiS2 single crystals
exhibit a magnetic order at the temperature range of
5–7 K that apparently coexist with superconductivity below
approximately 3 K.

Keywords

EN

Single crystal; Flux growth; Superconductinganisotropy; X-ray single crystal structural analysis; c-axistransport properties

• Publisher: De Gruyter Open
• Journal: Novel Superconducting Materials
• Year: 2015
• Volume: 1
• Issue: 1

Dates

received

11 - 8 - 2015

accepted

26 - 9 - 2015

online

6 - 11 - 2015

Contributors

author

Masanori Nagao

• University of Yamanashi, 7-32 Miyamae, Kofu,
  Yamanashi 400-8511, Japan; National Institute for Materials Science,
  1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan; E-mail: mnagao@
  yamanashi.ac.jp; Tel.: [phone]; Fax: [phone];
  Postal address: University of Yamanashi, Center for Crystal Science
  and Technology Miyamae 7-32, Kofu 400-8511, Japan

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Identifiers

DOI

10.1515/nsm-2015-0007