Informace o publikaci
Broad-band infrared ellipsometry measurements of the c-axis response of underdoped YBa2Cu3O7-delta: Spectroscopic distinction between the normal-state pseudogap and the superconducting gap
| Název česky | Infračervená elipsometrická měření odezvy poddopovaného YBa2Cu3O7-delta v ose c: Spektroskopické odlišení pseudogapu v normálním stavu a supravodivé mezery |
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| Autoři | |
| Rok publikování | 2008 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Journal of Physics and Chemistry of Solids |
| Fakulta / Pracoviště MU | |
| Citace | |
| Obor | Fyzika pevných látek a magnetismus |
| Klíčová slova | superconductors; infrared spectroscopy; optical properties; superconductivity |
| Popis | We present broad-band infrared ellipsometry measurements of the c-axis dielectric response of underdoped YBa2Cu3O7-delta single crystals. Our data provide a clear spectroscopic distinction between the normal-state pseudogap and the superconducting gap. In particular, they establish that different energy scales are underlying the respective redistributions of spectral weight. Furthermore, our data are suggestive of a mutual competition between the two gaps and thus of an extrinsic nature of the pseudogap with respect to superconductivity. |
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