Crystalline antiunitary symmetry in altermagnets selects pairing that produces robust nodal topological superconducting phases with Majorana flat bands and chiral edge states.
Exotic superconduct- ing states in altermagnets
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An inhomogeneous altermagnetic interlayer in a Josephson junction produces enhanced critical current and spin-polarized supercurrent at π misorientation of Néel vectors through cancellation of pair-breaking oscillations.
Altermagnetic sublattice order imposes momentum-dependent nodes in the superconducting gap for local pairing interactions and favors nonunitary equal-spin triplet superconductivity at large spin splitting.
Disorder induces transitions from π to 0 phases in altermagnetic Josephson junctions, suppresses critical current, and destabilizes the φ phase in a nonreciprocal way.
Altermagnetic spin splitting selects direction-selective triplet pairing in 2D d-wave metals and generates spin-locked Majorana edge states in both spin-conserving and Rashba-mixed regimes.
Symmetry matching between altermagnets and unconventional superconductors generates bulk zero-energy flat bands as Bogoliubov Fermi surfaces and distinct curved or flat surface states detectable by tunneling.
Gating a finite normal region between a superconducting altermagnet and a metallic reservoir produces perfect nonreciprocal spin and charge currents with tunable polarity via gate voltage and region length.
citing papers explorer
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Nodal Topological Superconductivity Driven by Crystalline Antiunitary Symmetry in Altermagnets
Crystalline antiunitary symmetry in altermagnets selects pairing that produces robust nodal topological superconducting phases with Majorana flat bands and chiral edge states.
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Spin-polarized Josephson current induced by inhomogeneous altermagnetic interlayers
An inhomogeneous altermagnetic interlayer in a Josephson junction produces enhanced critical current and spin-polarized supercurrent at π misorientation of Néel vectors through cancellation of pair-breaking oscillations.
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Inherent momentum-dependent gap structure of altermagnetic superconductors
Altermagnetic sublattice order imposes momentum-dependent nodes in the superconducting gap for local pairing interactions and favors nonunitary equal-spin triplet superconductivity at large spin splitting.
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Disorder-Induced Phase Transitions in Altermagnetic Josephson Junctions
Disorder induces transitions from π to 0 phases in altermagnetic Josephson junctions, suppresses critical current, and destabilizes the φ phase in a nonreciprocal way.
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Direction-selective triplet pairing and spin-edge locking in altermagnetic metals
Altermagnetic spin splitting selects direction-selective triplet pairing in 2D d-wave metals and generates spin-locked Majorana edge states in both spin-conserving and Rashba-mixed regimes.
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Engineering subgap states in superconductors by the symmetry of altermagnetism
Symmetry matching between altermagnets and unconventional superconductors generates bulk zero-energy flat bands as Bogoliubov Fermi surfaces and distinct curved or flat surface states detectable by tunneling.
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Perfect spin nonreciprocity in gated superconducting altermagnetic heterostructures
Gating a finite normal region between a superconducting altermagnet and a metallic reservoir produces perfect nonreciprocal spin and charge currents with tunable polarity via gate voltage and region length.