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PreprintCC BY 4.0arXiv

Proximity-Induced Giant Majorana Spin Response in a UTe2-Metal Film Heterostructure

  • Jushin Tei
  • Makoto Shimizu
  • Yukio Tanaka
  • Satoshi Fujimoto
  • Takeshi Mizushima
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Abstract

We establish an experimentally accessible route to identifying Majorana surface states through their intrinsic Ising spin response, using UTe2 as a concrete platform. The key is to extend the Majorana correlations into an adjacent metallic film via the superconducting proximity effect, thereby making the otherwise surface-localized response accessible to NMR measurements. Remarkably, disorder further sharpens the Majorana signature: impurity scattering suppresses the conventional p-wave proximity correlations while preserving the Majorana contribution, yielding a giant Ising-anisotropic enhancement of the NMR relaxation rate. This approach also offers a powerful means to distinguish among candidate pairing symmetries.

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Cite

BibTeXRIS
BibTeX
@misc{tei2026proximityinduced,
  title = {{Proximity-Induced Giant Majorana Spin Response in a UTe$_2$-Metal Film Heterostructure}},
  author = {Jushin Tei and Makoto Shimizu and Yukio Tanaka and Satoshi Fujimoto and Takeshi Mizushima},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.36053},
  eprint = {2610.36053},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.36053},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Proximity-Induced Giant Majorana Spin Response in a UTe_2-Metal Film Heterostructure
AU  - Jushin Tei
AU  - Makoto Shimizu
AU  - Yukio Tanaka
AU  - Satoshi Fujimoto
AU  - Takeshi Mizushima
PY  - 2026
DA  - 2026/10/26
PB  - arXiv
DO  - 10.48550/arxiv.2610.36053
UR  - https://arxiv.org/abs/2610.36053
AB  - We establish an experimentally accessible route to identifying Majorana surface states through their intrinsic Ising spin response, using UTe_2 as a concrete platform. The key is to extend the Majorana correlations into an adjacent metallic film via the superconducting proximity effect, thereby making the otherwise surface-localized response accessible to NMR measurements. Remarkably, disorder further sharpens the Majorana signature: impurity scattering suppresses the conventional p-wave proximity correlations while preserving the Majorana contribution, yielding a giant Ising-anisotropic enhancement of the NMR relaxation rate. This approach also offers a powerful means to distinguish among candidate pairing symmetries.
ER  -