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PreprintarXiv licencearXiv

Effect of uniform bond-charge order on longitudinal spin-susceptibility jump at a superconducting instability inside a magnetic phase

  • Sher Baz
  • Hiroyuki Yamase
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Abstract

A previous work [H. Yamase and M. Zafur, Phys. Rev. B \textbf{103}, 224527 (2021)] showed that the longitudinal spin susceptibility exhibits a jump when the superconductivity develops continuously inside a magnetic phase. That analysis employed a minimal model containing magnetic and superconducting interactions. However, in correlated-electron systems, both magnetic and bond-charge interactions originate from the same underlying spin-spin exchange interaction. We therefore extend the model by including the uniform bond-charge order to provide a more realistic description of the system. We find that the jump of the longitudinal spin susceptibility remains robust even in the presence of uniform bond-charge order, but the uniform bond-charge order quantitatively enhances the longitudinal spin susceptibility and the size of the jump at Tc.

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Cite

BibTeXRIS
BibTeX
@misc{baz2026effect,
  title = {{Effect of uniform bond-charge order on longitudinal spin-susceptibility jump at a superconducting instability inside a magnetic phase}},
  author = {Sher Baz and Hiroyuki Yamase},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.09799},
  eprint = {2610.09799},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.09799},
}
RIS
TY  - UNPB
TI  - Effect of uniform bond-charge order on longitudinal spin-susceptibility jump at a superconducting instability inside a magnetic phase
AU  - Sher Baz
AU  - Hiroyuki Yamase
PY  - 2026
DA  - 2026/10/07
PB  - arXiv
DO  - 10.48550/arxiv.2610.09799
UR  - https://arxiv.org/abs/2610.09799
AB  - A previous work [H. Yamase and M. Zafur, Phys. Rev. B \textbf{103}, 224527 (2021)] showed that the longitudinal spin susceptibility exhibits a jump when the superconductivity develops continuously inside a magnetic phase. That analysis employed a minimal model containing magnetic and superconducting interactions. However, in correlated-electron systems, both magnetic and bond-charge interactions originate from the same underlying spin-spin exchange interaction. We therefore extend the model by including the uniform bond-charge order to provide a more realistic description of the system. We find that the jump of the longitudinal spin susceptibility remains robust even in the presence of uniform bond-charge order, but the uniform bond-charge order quantitatively enhances the longitudinal spin susceptibility and the size of the jump at T_c.
ER  -