Quantized magnetic flux and the magnetohalon effect in a critical superconductor

Kun Chen; Boris Svistunov

doi:10.1103/PhysRevB.98.140503

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Quantized magnetic flux and the magnetohalon effect in a critical superconductor

Kun Chen, Boris Svistunov

DOI 10.1103/PhysRevB.98.140503 · Physical Review B

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Abstract

Employing the standard worldline-vortex mapping, we conclude that at the critical temperature, superconductors demonstrate the magnetohalon effect with respect to the quantized net magnetic flux generated by a solenoid inserted into the system. The effect is a direct counterpart of the recently revealed halon effect in terms of the quantized particle charge of a static impurity in the two-dimensional U(1) quantum-critical environment. The flux-loop model (a.k.a. frozen lattice superconductor) with a quasisolenoid perturbation proves to be the model of choice for qualitative and quantitative description of both the halon and the magnetohalon effects.