Breaking of Ginzburg-Landau description in the temperature dependence of the anisotropy in the nematic superconductor.

Nematic superconductors are characterized by an apparent crystal symmetry breaking that results in the anisotropy of the in-plane upper critical magnetic field $H_{c2}$. The symmetry breaking is usually attributed to the strain of the crystal lattice. The nature and the value of the strain are debatable. We perform systematic measurements of the $H_{c2}$ anisotropy in the high-quality Sr$_x$Bi$_2$Se$_3$ single crystals in the temperature range 1.8~K$

Keywords:

• Singularity
• Symmetry breaking
• Liquid crystal
• Crystal structure
• Anisotropy
• Condensed matter physics
• Superconductivity
• Physics
• Sign (mathematics)
• Atmospheric temperature range

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