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PreprintarXiv licencearXiv

Fingerprints of unconventional pairing in superconductor-hole-gas heterostructures

  • Serafim S. Babkin
  • Karsten Flensberg
  • Jeroen Danon
  • Maksym Serbyn
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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.

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Cite

BibTeXRIS
BibTeX
@misc{babkin2026fingerprints,
  title = {{Fingerprints of unconventional pairing in superconductor-hole-gas heterostructures}},
  author = {Serafim S. Babkin and Karsten Flensberg and Jeroen Danon and Maksym Serbyn},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.40059},
  eprint = {2609.40059},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.40059},
}
RIS
TY  - UNPB
TI  - Fingerprints of unconventional pairing in superconductor-hole-gas heterostructures
AU  - Serafim S. Babkin
AU  - Karsten Flensberg
AU  - Jeroen Danon
AU  - Maksym Serbyn
PY  - 2026
DA  - 2026/09/30
PB  - arXiv
DO  - 10.48550/arxiv.2609.40059
UR  - https://arxiv.org/abs/2609.40059
AB  - 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.
ER  -