Critical photoinduced reflectivity relaxation dynamics in single-layer Bi-based cuprates near the pseudogap end point
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866915470132641792 |
|---|---|
| author | Shimizu, T. Tobise, R. Kurosawa, T. Tsuchiya, S. Oda, M. Toda, Y. Kabanov, V. V. Mihailovic, D. Mertelj, T. |
| author_facet | Shimizu, T. Tobise, R. Kurosawa, T. Tsuchiya, S. Oda, M. Toda, Y. Kabanov, V. V. Mihailovic, D. Mertelj, T. |
| contents | A comprehensive study of photoinduced transient reflectivity dynamics in heavily overdoped single-layer cuprate (Bi,Pb)$_{2}$Sr$_{2}$CuO$_{6+δ}$ (Pb-Bi2201), across the end points of the pseudogap and superconducting phases, has been conducted using optical ultrafast time-resolved pump-probe spectroscopy. In the Pb-Bi2201 just before reaching the pseudogap end point, the transient reflectivity dynamics above $T_{\rm c}$ resemble the pseudogap response observed in optimally doped La-Bi2201. At low temperatures, however, the relaxation time exhibits a power-law divergence, $τ\sim10\hbar/k_{\mathrm{B}}T$, signaling quantum critical behavior at the pseudogap end point doping. A similar power-law increase in relaxation time is also observed in Pb-Bi2201 just beyond the pseudogap doping end point, though it is less pronounced. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_21298 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Critical photoinduced reflectivity relaxation dynamics in single-layer Bi-based cuprates near the pseudogap end point Shimizu, T. Tobise, R. Kurosawa, T. Tsuchiya, S. Oda, M. Toda, Y. Kabanov, V. V. Mihailovic, D. Mertelj, T. Superconductivity Strongly Correlated Electrons A comprehensive study of photoinduced transient reflectivity dynamics in heavily overdoped single-layer cuprate (Bi,Pb)$_{2}$Sr$_{2}$CuO$_{6+δ}$ (Pb-Bi2201), across the end points of the pseudogap and superconducting phases, has been conducted using optical ultrafast time-resolved pump-probe spectroscopy. In the Pb-Bi2201 just before reaching the pseudogap end point, the transient reflectivity dynamics above $T_{\rm c}$ resemble the pseudogap response observed in optimally doped La-Bi2201. At low temperatures, however, the relaxation time exhibits a power-law divergence, $τ\sim10\hbar/k_{\mathrm{B}}T$, signaling quantum critical behavior at the pseudogap end point doping. A similar power-law increase in relaxation time is also observed in Pb-Bi2201 just beyond the pseudogap doping end point, though it is less pronounced. |
| title | Critical photoinduced reflectivity relaxation dynamics in single-layer Bi-based cuprates near the pseudogap end point |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2508.21298 |