Magnetic Response of Majorana Kramers Pairs Protected by Z2 Invariants

Abstract

On the surface of time-reversal-invariant topological superconductors, Kramers pairs of Majorana fermions with chiral and crystalline symmetries exhibit completely uniaxial or octupole anisotropic magnetic response. This paper reports possible types of magnetic responses of Majorana Kramers pairs with one-dimensional Z2 invariants defined by crystalline symmetry. In particular, the general theory predicts a new type of magnetic response where two Majorana Kramers pairs associated with the Z2 invariant show biaxially (quadrupolar) anisotropic magnetic response, which is a novel type of response that is rarely observed in conventional and Majorana fermions.

5 pages, 4 figures

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Cited by in corpus (10)

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• Magnetic response of Majorana Kramers pairs with an order-two symmetry
• Theory of Magnetic-Texture-Induced Anomalous Hall Effect on the Surface of Topological Insulators
• Electric Multipoles of Double Majorana Kramers Pairs
• Crystal-symmetry-protected gapless vortex-line phases in superconducting Dirac semimetals
• Odd-frequency pairs and anomalous proximity effect in nematic and chiral states of superconducting topological insulators
• Majorana multipole response with magnetic point group symmetry
• Majorana Spin Current Generation by Dynamic Strain
• Higher-order topological phases for time-reversal-symmetry breaking superconductivity in UTe${}_2$
• Euler band topology in superfluids and superconductors