Quantum ground state control in superconductor-silicene structures: $0$-$\pi$ transitions, ${\phi }_0$-junctions, and Majorana bound states

Abstract

We demonstrate theoretically that proximity-induced superconductivity in silicene offers the possibility to exert strong quantum ground state control. We show that electrically controlled $0$-$\pi$ transitions occur in Josephson junctions in the presence of an exchange field due to the buckling of the silicene lattice. We also discover that zigzag-oriented interfaces, featuring intervalley scattering, cause a ${\phi }_0$ state with an applied electric field. Finally, we demonstrate that Majorana bound states along the silicene edge are tunable via the edge orientation, electric, and in-plane spin exchange fields.

arXiv comment5 pages, 4 figures + Supplemental material

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Cited by in corpus (30)

• Lattice symmetry assisted second order topological superconductors and Majorana patterns
• Hybrid helical state and superconducting diode effect in S/F/TI heterostructures
• Quasiclassical theory of magnetoelectric effects in superconducting heterostructures in the presence of the spin-orbit coupling
• Testing Topological Protection of Edge States in Hexagonal Quantum Spin Hall Candidate Materials
• Magnetoelectric effects in Josephson junctions
• Resistive state of SFS Josephson junctions in the presence of moving domain walls
• Anomalous phase shift in a Josephson junction via an antiferromagnetic interlayer
• Electrical control of magnetization in S/F/S junctions on a 3D topological insulator
• Multiple odd-frequency superconducting states in buckled quantum spin Hall insulators with time-reversal symmetry
• Transport signatures of Majorana bound states in superconducting hybrid structures
• Chirality selective spin interactions mediated by the superconducting current
• Anisotropic Andreev Reflection and Josephson Effect in Ballistic Phosphorene
• Long-Range Propagation and Interference of $d$-wave Superconducting Pairs in Graphene
• Signatures of the Majorana spin in electrical transport through a Majorana nanowire
• Long-range interaction of magnetic moments in a coupled system of S/F/S Josephson junctions with anomalous ground-state phase shift
• Enhanced Majorana bound states in magnetic chains on superconducting topological insulator edges
• Odd-frequency superconductivity induced in topological insulators with and without hexagonal warping
• Anomalous supercurrent modulated by interfacial magnetizations in Josephson junctions with ferromagnetic bilayers
• Magnetoelectric effects in superconductor/ferromagnet bilayers
• Controllable magnetic states in chains of coupled phi-0 Josephson junctions with ferromagnetic weak links
• Intrinsic non-magnetic ${\varphi }_0$ Josephson junctions in twisted bilayer graphene
• Superconducting proximity effect in flat band systems
• Gap oscillations and Majorana bound states in magnetic chains on superconducting honeycomb lattices
• Tuning Majorana zero modes with temperature in $\pi$-phase Josephson junctions
• Probing Majorana bound states via a pn-junction containing a quantum dot
• Electrically controlled crossover between $2\pi$- and $4\pi$-Josephson effects through topologically-confined channels in silicene
• Tunable effective length of fractional Josephson junctions
• Electric spin and valley Hall effects
• Anomalous phase shift and superconducting diode effect in Josephson junctions via thin films of rare-earth intermetallic magnets
• Originality of resonance and locking phenomena in SFS ${\phi }_0$ Josephson junction