Prediction of new superconducting bilayers heterostructures using quantum confinement and proximity effects

• URL: http://arxiv.org/abs/2603.25648v1
• Date: Thu, 26 Mar 2026 17:00:15 GMT
• Title: Prediction of new superconducting bilayers heterostructures using quantum confinement and proximity effects
• Abstract summary: We show that quantum confinement and proximity coupling can substantially enhance the superconducting critical temperature.<n>Results identify quantum-confined bilayers as a promising route to engineering emergent superconductivity in metallic heterostructures.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A central challenge in nanoscale superconductivity is to understand and exploit the combined action of quantum confinement and proximity effects in experimentally realistic metallic heterostructures. We theoretically investigate superconducting bilayer heterostructures in which these two effects coexist. Using a generalized Eliashberg framework that incorporates both quantum confinement and proximity coupling, we show that their interplay can substantially enhance the superconducting critical temperature. In particular, the theory predicts superconductivity in selected bilayers whose constituent materials are nonsuperconducting or only weakly superconducting in the bulk. These results identify quantum-confined bilayers as a promising route to engineering emergent superconductivity in metallic heterostructures.

Related papers

• Cavity-enhanced superconducting response in an underdoped cuprate [0.0]
  In underdoped cuprates, superconducting fluctuations can survive above the temperature at which global coherence is lost.<n>We study whether superconducting coherence can be stabilized by engineering the electromagnetic environment of the superconductor.
  arXiv  Detail & Related papers  (2026-06-16T15:46:56Z)
• In-plane ferromagnetism-driven topological nodal-point superconductivity with tilted Weyl cones [0.0]
  We report evidence of a topological nodal-point superconducting phase in a one-atom-thick in-plane ferromagnet in direct proximity to a conventional $s$-wave superconductor.<n>Results establish the combination of in-plane ferromagnetism and conventional superconductivity as a route to design two-dimensional topological quantum phases.
  arXiv  Detail & Related papers  (2026-01-07T13:48:56Z)
• Quantum Coherence in Superconducting Vortex States [0.0]
  Abrikosov vortices, where the superconducting gap is completely suppressed in the core, are dissipative, semi-classical entities.<n>We present evidence that vortices trapped in granular superconducting films can behave as two-level systems.
  arXiv  Detail & Related papers  (2025-10-22T16:59:25Z)
• Resonator-assisted quantum transduction between superconducting qubits and trapped atomic systems via Rydberg levels [45.88028371034407]
  We propose a scheme between superconducting qubits and qubit states encoded in trapped atomic systems.<n>The approach employs atomic Rydberg levels together with laser pulses that connect them to the low-lying qubit states.
  arXiv  Detail & Related papers  (2025-01-06T18:28:18Z)
• Transport properties and quantum phase transitions in one-dimensional superconductor-ferromagnetic insulator heterostructures [44.99833362998488]
  We propose a one-dimensional electronic nanodevice inspired in recently fabricated semiconductor-superconductor-ferromagnetic insulator hybrids. We show that the device can be tuned across spin- and fermion parity-changing QPTs by adjusting the FMI layer length orange and/or by applying a global backgate voltage. Our findings suggest that these effects are experimentally accessible and offer a robust platform for studying quantum phase transitions in hybrid nanowires.
  arXiv  Detail & Related papers  (2024-10-18T22:25:50Z)
• Revealing Symmetry-Broken Superconducting Configurations by Density Functional Theory [0.0]
  A coherent theory for the superconductivity of both conventional and unconventional superconductors is currently lacking.<n>Here we show that superconductivity arises from the formation of a symmetry-broken superconducting configuration.<n>This electron-phonon interaction creates straight one-dimensional tunnels (SODTs) for charge density of electrons and/or holes.
  arXiv  Detail & Related papers  (2024-03-31T15:27:12Z)
• Fragmented superconductivity in the Hubbard model as solitons in Ginzburg-Landau theory [39.58317527488534]
  Superconductivity and charge density waves are observed in close vicinity in strongly correlated materials. We investigate the nature of such an intertwined state of matter stabilized in the phase diagram of the elementary $t$-$tprime$-$U$ Hubbard model. We provide conclusive evidence that the macroscopic wave functions of the superconducting fragments are well-described by soliton solutions of a Ginzburg-Landau equation.
  arXiv  Detail & Related papers  (2023-07-21T18:00:07Z)
• Negative electrohydrostatic pressure between superconducting bodies [39.58317527488534]
  We predict a negative (attractive) pressure between planar superconducting bodies. The resulting surface energies are in better agreement than those predicted by the Hartree-Fock theory. The model circumvents the bulk limitations of the Bardeen-Cooper-Schrieffer and Ginzburg-Landau theories.
  arXiv  Detail & Related papers  (2023-07-10T21:08:22Z)
• Vortex-enabled Andreev processes in quantum Hall-superconductor hybrids [0.0]
  We investigate transport through a proximitized integer quantum Hall edge. By examining the downstream conductance, we identify regimes in which sub-gap vortex levels mediate Andreev processes. We show that at finite temperature, and in the limit of a large number of vortices, the downstream conductance can average to zero, indicating that the superconductor effectively behaves like a normal contact.
  arXiv  Detail & Related papers  (2022-07-21T18:00:15Z)
• Ternary Metal Oxide Substrates for Superconducting Circuits [65.60958948226929]
  Substrate material imperfections and surface losses are one of the major factors limiting superconducting quantum circuitry from reaching the scale and complexity required to build a practicable quantum computer. Here, we examine two ternary metal oxide materials, spinel (MgAl2O4) and lanthanum aluminate (LaAlO3), with a focus on surface and interface characterization and preparation.
  arXiv  Detail & Related papers  (2022-01-17T06:10:15Z)
• Waveguide quantum electrodynamics: collective radiance and photon-photon correlations [151.77380156599398]
  Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters. We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
  arXiv  Detail & Related papers  (2021-03-11T17:49:52Z)
• Quantum Sensors for Microscopic Tunneling Systems [58.720142291102135]
  tunneling Two-Level-Systems (TLS) are important for micro-fabricated quantum devices such as superconducting qubits. We present a method to characterize individual TLS in virtually arbitrary materials deposited as thin-films. Our approach opens avenues for quantum material spectroscopy to investigate the structure of tunneling defects.
  arXiv  Detail & Related papers  (2020-11-29T09:57:50Z)
• Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
  We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control. We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap. The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
  arXiv  Detail & Related papers  (2020-06-05T09:27:53Z)
• Impact of ionizing radiation on superconducting qubit coherence [43.13648171914508]
  We show that environmental radioactive materials and cosmic rays contribute to an elevated quasiparticle density that would limit superconducting qubits of the type measured here to coherence times in the millisecond regime. Introducing radiation shielding reduces the flux of ionizing radiation and positively correlates with increased coherence time.
  arXiv  Detail & Related papers  (2020-01-24T20:59:46Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.