Work

Fingerprints of unconventional pairing in superconductor-hole-gas heterostructures

Year: 2026

Type: preprint

Abstract: Superconductor and two-dimensional hole gas heterostructures are promising platforms for quantum devices, but their intrinsic properties, e.g., unconventional pairings, are hard to access experimentally. Here, we show that the in-plane-field dependence of the superfluid stiffness and spin susceptibility exhibits nonanalyticities encoding the induced gap structure in the hole gas. Additionally, Fourier harmonics of the stiffness tensor's field-angle dependence, accessible via kinetic-inductance measurements, provide fingerprints of unconventional pairing and cubic Rashba coupling.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.40059

Authors: Babkin, Serafim S., Flensberg, Karsten, Danon, Jeroen, Serbyn, Maksym

Institutions: Institute of Science and Technology Austria, University of Copenhagen, Norwegian University of Science and Technology

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Austrian Science Fund, Norges Forskningsråd

Award: G3723448086

OpenAlex ID: W7215128981

Cites: 1

Cited by:

Related to: 10