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PreprintarXiv licencearXiv

Multiple Superconducting Phases in Palladium Deuteride Induced by Nuclear-Spin Isotope Effect

  • Ryoma Kato
  • Ten-ichiro Yoshida
  • Riku Iimori
  • Masanobu Shiga
  • Yuji Inagaki
  • Takashi Kimura
  • Koichiro Ienaga
  • Tatsuya Kawae
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Abstract

We study the superconducting properties of high-quality PdDx films. The resistivity shows a sharp drop at T ∼1.7 K, marking the superconducting transition. However, a finite resistivity persists and vanishes at ∼0.6 K. The temperature and magnetic-field dependences of the resistivity exhibit multiple anomalies within the superconducting state, revealing distinct superconducting phases. Such anomalies are absent in PdHx films. These results demonstrate a clear qualitative difference between the superconducting phase diagrams of PdDx and PdHx, highlighting the role of nuclear-spin isotope effects.

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Cite

BibTeXRIS
BibTeX
@misc{kato2026multiple,
  title = {{Multiple Superconducting Phases in Palladium Deuteride Induced by Nuclear-Spin Isotope Effect}},
  author = {Ryoma Kato and Ten-ichiro Yoshida and Riku Iimori and Masanobu Shiga and Yuji Inagaki and Takashi Kimura and Koichiro Ienaga and Tatsuya Kawae},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2605.20966},
  eprint = {2605.20966},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.20966},
}
RIS
TY  - UNPB
TI  - Multiple Superconducting Phases in Palladium Deuteride Induced by Nuclear-Spin Isotope Effect
AU  - Ryoma Kato
AU  - Ten-ichiro Yoshida
AU  - Riku Iimori
AU  - Masanobu Shiga
AU  - Yuji Inagaki
AU  - Takashi Kimura
AU  - Koichiro Ienaga
AU  - Tatsuya Kawae
PY  - 2026
DA  - 2026/09/20
PB  - arXiv
DO  - 10.48550/arxiv.2605.20966
UR  - https://arxiv.org/abs/2605.20966
AB  - We study the superconducting properties of high-quality PdD_x films. The resistivity shows a sharp drop at T ∼1.7 K, marking the superconducting transition. However, a finite resistivity persists and vanishes at ∼0.6 K. The temperature and magnetic-field dependences of the resistivity exhibit multiple anomalies within the superconducting state, revealing distinct superconducting phases. Such anomalies are absent in PdH_x films. These results demonstrate a clear qualitative difference between the superconducting phase diagrams of PdD_x and PdH_x, highlighting the role of nuclear-spin isotope effects.
ER  -