Correlation between $T_{\mathrm{c}}$ and the Pseudogap Observed in the Optical Spectra of High $T_{\mathrm{c}}$ Superconducting Cuprates
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arXiv
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2024
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| author | Tajima, Setsuko Itoh, Yuhta Mizutamari, Katsuya Miyasaka, Shigeki Nakajima, Masamichi Sasaki, Nae Yamaguchi, Shunpei Harada, Kei-ichi Watanabe, Takao |
| author_facet | Tajima, Setsuko Itoh, Yuhta Mizutamari, Katsuya Miyasaka, Shigeki Nakajima, Masamichi Sasaki, Nae Yamaguchi, Shunpei Harada, Kei-ichi Watanabe, Takao |
| contents | We studied the temperature dependences of the optical spectra for optimally and underdoped Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+z}$ single crystals. Similarly to the other cuprates' cases, a gap-like conductivity suppression was observed with reducing the temperature from above $T_{\mathrm{c}}$, creating a peak in the conductivity spectrum. The conductivity peak energy was insensitive to the doping level, namely $T_{\mathrm{c}}$, which suggests that this gap is not a superconducting gap but is related to the pseudogap. Comparing the data of various mono-, double-, and triple-layer cuprates, we found a clear correlation between the optimal $T_{\mathrm{c}}$ of each material and the pseudogap-related conductivity peak energy. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2408_03080 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Correlation between $T_{\mathrm{c}}$ and the Pseudogap Observed in the Optical Spectra of High $T_{\mathrm{c}}$ Superconducting Cuprates Tajima, Setsuko Itoh, Yuhta Mizutamari, Katsuya Miyasaka, Shigeki Nakajima, Masamichi Sasaki, Nae Yamaguchi, Shunpei Harada, Kei-ichi Watanabe, Takao Superconductivity Strongly Correlated Electrons We studied the temperature dependences of the optical spectra for optimally and underdoped Bi$_2$Sr$_2$Ca$_2$Cu$_3$O$_{10+z}$ single crystals. Similarly to the other cuprates' cases, a gap-like conductivity suppression was observed with reducing the temperature from above $T_{\mathrm{c}}$, creating a peak in the conductivity spectrum. The conductivity peak energy was insensitive to the doping level, namely $T_{\mathrm{c}}$, which suggests that this gap is not a superconducting gap but is related to the pseudogap. Comparing the data of various mono-, double-, and triple-layer cuprates, we found a clear correlation between the optimal $T_{\mathrm{c}}$ of each material and the pseudogap-related conductivity peak energy. |
| title | Correlation between $T_{\mathrm{c}}$ and the Pseudogap Observed in the Optical Spectra of High $T_{\mathrm{c}}$ Superconducting Cuprates |
| topic | Superconductivity Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2408.03080 |