Growth and superconducting anisotropies of F-substituted LaOBiSe2 single crystals

TL;DR

This study reports the growth of F-substituted LaOBiSe2 single crystals, characterizes their structure, and measures their superconducting properties, including critical temperature and anisotropy, revealing significant anisotropic behavior.

Contribution

The paper presents a novel method for growing high-quality F-substituted LaOBiSe2 single crystals and provides detailed measurements of their superconducting anisotropies.

Findings

Superconducting critical temperature is approximately 3.5 K.

Superconducting anisotropies are 49 and 24 from different measurements.

Single crystals exhibit a plate-like shape with about 1 mm size.

Abstract

F-substituted LaOBiSe2 single crystals were grown using CsCl flux. The obtained single crystals showed a plate-like shape with a size of about 1.0 mm square. The c-axis lattice constant of the grown crystals was determined to be 14.114(3) {\AA}. The superconducting critical temperature of the single crystal was approximately 3.5 K. The superconducting anisotropies were determined to be 49 and 24 using the upper critical field and the effective mass model, respectively.