Gap in the infrared response ofHgBa2Ca2Cu3O8+δ
| Autor: | M. Windt, D. Colson, V. Viallet-Guillen, Thomas Timusk, T. Startseva, J. J. McGuire |
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| Rok vydání: | 2000 |
| Předmět: |
Physics
Superconductivity Kramers–Kronig relations Condensed matter physics Infrared Doping 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Optical spectra Crystallography Condensed Matter::Superconductivity Scattering rate 0103 physical sciences Cuprate 010306 general physics 0210 nano-technology Single crystal |
| Zdroj: | Physical Review B. 62:8711-8714 |
| ISSN: | 1095-3795 0163-1829 |
| DOI: | 10.1103/physrevb.62.8711 |
| Popis: | The $\mathrm{ab}$-plane optical spectra of one underdoped and one nearly optimally doped single crystal of ${\mathrm{HgBa}}_{2}{\mathrm{Ca}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{8+\ensuremath{\delta}}$ were investigated in the frequency range from 40 to 40 000 ${\mathrm{cm}}^{\ensuremath{-}1}.$ The frequency-dependent scattering rate was obtained by Kramers Kronig analysis of the reflectance. Both crystals have a gap in the scattering rate of about 1000 ${\mathrm{cm}}^{\ensuremath{-}1}$ which is much larger than the 700-${\mathrm{cm}}^{\ensuremath{-}1}$ gap seen in optical studies of several cuprates with maximum ${T}_{c}$ around 93 K. There appears to be a universal scaling between gap size and maximum ${T}_{c}$ for the cuprate superconductors. |
| Databáze: | OpenAIRE |
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