Spontaneous generation of fractional vortex-Antivortex pairs at single edges of high-Tc superconductors
Paper i proceeding, 2018

Unconventional d-wave superconductors with pair-breaking edges are predicted to have ground states with spontaneously broken time-reversal and translational symmetries. We use the quasiclassical theory of superconductivity to demonstrate that such phases can exist at any single pair-breaking facet. This implies that a greater variety of systems, not necessarily mesoscopic in size, should be unstable to such symmetry breaking. The density of states averaged over the facet displays a broad peak centered at zero energy, which is consistent with experimental findings of a broad zero-bias conductance peak with a temperature-independent width at low temperatures.


Patric Holmvall

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Tomas Löfwander

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Mikael Fogelström

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Journal of Physics: Conference Series

17426588 (ISSN) 17426596 (eISSN)

Vol. 969 1 012037

28th International Conference on Low Temperature Physics, LT 2018
Gothenburg, Sweden,


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