Reentrant proximity-induced superconductivity for GeTe semimetal
arXiv:2304.05971 · doi:10.1134/S0021364023603329
Abstract
We experimentally investigate charge transport in In-GeTe and In-GeTe-In proximity devices, which are formed as junctions between superconducting indium leads and thick single crystal flakes of -GeTe topological semimetal. We observe nonmonotonic effects of the applied external magnetic field, including reentrant superconductivity in In-GeTe-In Josephson junctions: supercurrent reappears at some finite magnetic field. For a single In-GeTe Andreev junction, the superconducting gap is partially suppressed in zero magnetic field, while the gap is increased nearly to the bulk value for some finite field before its full suppression. We discuss possible reasons for the results obtained, taking into account spin polarization of Fermi arc surface states in topological semimetal -GeTe with a strong spin-orbit coupling. In particular, the zero-field surface state spin polarization partially suppresses the superconductivity, while it is recovered due to the modified spin-split surface state configuration in finite fields. As an alternative possible scenario, the transition into the Fulde-Ferrell-Larkin-Ovchinnikov state is discussed. However, the role of strong spin-orbit coupling in forming the nonmonotonic behavior has not been analyzed for heterostructures in the Fulde-Ferrell-Larkin-Ovchinnikov state, which is crucial for junctions involving GeTe topological semimetal.
arXiv commentOne reference has been added
References in corpus (56)
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- Weyl and Dirac Semimetals in Three Dimensional Solids
- New directions in the pursuit of Majorana fermions in solid state systems
- Type-II Weyl Semimetals
- Proximity effects in superconductor-ferromagnet heterostructures
- Chern semi-metal and Quantized Anomalous Hall Effect in HgCr2Se4
- Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Realizing Majorana zero modes in superconductor-semiconductor heterostructures
- The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
- Topological Semimetals Predicted from First-principles Calculations
- Observation of Fermi Arcs in Type-II Weyl Semimetal Candidate WTe2
- Ferroelectricity and Rashba effect in GeTe
- Nonmonotonic critical temperature in superconductor/ferromagnet bilayers
- Ferroelectric control of the spin texture in germanium telluride
- Induced Ferromagnetism due to Superconductivity in Superconductor-Ferromagnet structures
- Criteria for directly detecting topological Fermi arcs in Weyl semimetals
- Re-entrant superconductivity in Nb/Cu(1-x)Ni(x) bilayers
- Room-temperature ferroelectric switching of spin-to-charge conversion in GeTe
- Surface versus bulk contributions to the giant Rashba splitting in the ferroelectric α-GeTe(111) semiconductor
- Prediction of a native ferroelectric metal
- Inverse proximity effect in superconductor-ferromagnet structures: From the ballistic to the diffusive limit
- Superconducting proximity effect in three-dimensional topological insulators in the presence of a magnetic field
- Design of a multifunctional polar metal via first-principles high-throughput structure screening
- Field-induced tuning of the pairing state in a superconductor
- Field Re-entrant Superconductivity Induced by the Enhancement of Effective Mass in URhGe
- Josephson Current in S-FIF-S Junctions: Nonmonotonic Dependence on Misorientation Angle
- Superconductivity in Uranium Ferromagnets
- Vanishing Meissner effect as a hallmark of in-plane FFLO instability in superconductor - ferromagnet layered systems
- Electromagnetic proximity effect in planar superconductor-ferromagnet structures
- Oscillations of Induced Magnetization in Superconductor-Ferromagnet Heterostructures
- Topological semimetals in the SnTe material class: Nodal lines and Weyl points
- Change of superconducting character in UTe2induced by magnetic field
- Inverse proximity effect and influence of disorder on triplet supercurrents in strongly spin-polarized ferromagnets
- Spin-Transfer Torque and Magnetoresistance in Superconducting Spin-Valves
- Spin polarization and orbital effects in superconductor-ferromagnet structures
- Non-unitary triplet superconductivity tuned by field-controlled magnetization --URhGe, UCoGe and UTe--
- Reentrant Phase Coherence in Superconducting Nanowire Composites
- Realization of a double-slit SQUID geometry by Fermi arc surface states in a WTe Weyl semimetal
- Evolution of electronic states and emergence of superconductivity in the polar semiconductor GeTe by doping valence-skipping In
- Temperature controlled FFLO instability in superconductor-ferromagnet hybrids
- Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric -GeTe(111) by alkali doping
- Triple point fermions in ferroelectric GeTe
- Long-Range triplet Josephson Current Modulated by the Interface Magnetization Texture
- Reentrant superconductivity in UTe
- Multivalued current-phase relationship in a.c. Josephson effect for a three-dimensional Weyl semimetal WTe
- Upper critical field in layered superconductors
- Gate-dependent non-linear Hall effect at room temperature in topological semimetal GeTe
- Restoration of superconductivity in high magnetic fields in UTe
- Interface superconductivity in a type-II Dirac semimetal NiTe
- Josephson spin-valve realization in the magnetic nodal-line topological semimetal FeGeTe
- Enhancing of the in-plane FFLO-state critical temperature in heterostructures by the orbital effect of the magnetic field
- Long- to short-junction crossover and field-reentrant critical current in Al/Ag-nanowires/Al Josephson junctions
- Anomalous inverse proximity effect in unconventional-superconductor junctions
- Dynamic negative capacitance regime in GeTe Rashba ferroelectric
- Magnetic Switching in Weyl Semimetal-Superconductor Heterostructures