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PreprintarXiv licencearXiv

Thermodynamics of Tc suppression in far-overdoped Tl2Ba2CuO6

  • Ayanesh Maiti
  • David M. Broun
  • Seunghyun Khim
  • Michal Moravec
  • Antony Carrington
  • Carsten Putzke
  • Vivek Mishra
  • Peter Hirschfeld
  • Andrew P. Mackenzie
  • Andreas W. Rost
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Abstract

The physical origin of the suppression of superconductivity with hole doping in overdoped cuprates remains unclear. We measure the electronic specific heat of microgram-scale Tl2Ba2CuO6 crystals and find sharp superconducting anomalies persisting far into the overdoped regime. A weak-coupling BCS-like framework incorporating the known Fermi surface and cation disorder quantitatively reproduces the observed anomalies for Tc=14-$25$ K and their weak doping dependence. The results show Tc(p) to be driven predominantly by a smoothly decreasing pairing strength.

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Cite

BibTeXRIS
BibTeX
@misc{maiti2026thermodynamics,
  title = {{Thermodynamics of $T_\rm c$ suppression in far-overdoped Tl$_2$Ba$_2$CuO$_6$}},
  author = {Ayanesh Maiti and David M. Broun and Seunghyun Khim and Michal Moravec and Antony Carrington and Carsten Putzke and Vivek Mishra and Peter Hirschfeld and Andrew P. Mackenzie and Andreas W. Rost},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.01213},
  eprint = {2609.01213},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.01213},
}
RIS
TY  - UNPB
TI  - Thermodynamics of T_c suppression in far-overdoped Tl_2Ba_2CuO_6
AU  - Ayanesh Maiti
AU  - David M. Broun
AU  - Seunghyun Khim
AU  - Michal Moravec
AU  - Antony Carrington
AU  - Carsten Putzke
AU  - Vivek Mishra
AU  - Peter Hirschfeld
AU  - Andrew P. Mackenzie
AU  - Andreas W. Rost
PY  - 2026
DA  - 2026/09/08
PB  - arXiv
DO  - 10.48550/arxiv.2609.01213
UR  - https://arxiv.org/abs/2609.01213
AB  - The physical origin of the suppression of superconductivity with hole doping in overdoped cuprates remains unclear. We measure the electronic specific heat of microgram-scale Tl_2Ba_2CuO_6 crystals and find sharp superconducting anomalies persisting far into the overdoped regime. A weak-coupling BCS-like framework incorporating the known Fermi surface and cation disorder quantitatively reproduces the observed anomalies for T_c=14-$25$ K and their weak doping dependence. The results show T_c(p) to be driven predominantly by a smoothly decreasing pairing strength.
ER  -