Superconducting States for Semi-Dirac Fermions at Zero and Finite Magnetic Fields
arXiv:1704.08780 · doi:10.1103/PhysRevB.96.220503
Abstract
We address the superconducting singlet state of anisotropic Dirac fermions that disperse linearly in one direction and parabolically in the other. For systems that have uniaxial anisotropy, we show that the electromagnetic response to an external magnetic flux is extremely anisotropic near the quantum critical point of the superconducting order. In the quantum critical regime and above a critical magnetic field, we show that the superconductor may form a novel exotic smectic state, with a stripe pattern of flux domains.
4.1 pages + supplemental materials. Added references
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- Novel criticality of Dirac fermions in the presence of emergent gauge fields
- Novel criticality of Dirac fermions from lattice symmetry breaking
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- Fate of superconductivity in disordered Dirac and semi-Dirac semimetals
- Topological Superfluid Responses of Superconducting Dirac Semimetals
- Fermion dispersion renormalization in a two-dimensional semi-Dirac semimetal
- Quantum critical scaling of gapped phases in nodal-line semimetals
- Unveiling three types of fermions in a nodal ring topological semimetal through magneto-optical transitions
- Superfluid Stiffness and Josephson Quantum Capacitance: Adiabatic Approach and Topological Effects
- Interacting type-II semi-Dirac quasiparticles