The temperature dependence of the 4-eV optical transition in YBa2Cu3O6

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Bijlsma, Marcel E. and Wormeester, Herbert and Blank, Dave H.A. and Span, Edward and Silfhout van, Arend and Rogalla, Horst (1998) The temperature dependence of the 4-eV optical transition in YBa2Cu3O6. Physical Review B: Condensed matter and materials physics, 1998 (57). pp. 13418-13421. ISSN 1098-0121

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Abstract:With spectroscopic ellipsometry the optical properties of high quality YBa2Cu3O6 thin films deposited by off-axis magnetron sputtering were investigated in situ. The optical transition at 4 eV of these films that were not exposed to atmospheric condition shows a two times higher magnitude than reported previously and can be described by a single Lorentz oscillator in the complete temperature range of 20 °C–700 °C. The width of the Lorentz oscillator is remarkably small. Combined with the temperature-independent strength of one electron per unit cell of the 4-eV transition, it is an indication that this optical transition takes place between a quite isolated occupied and unoccupied level of the electronic structure.
Item Type:Article
Copyright:© 1998 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/23859
Official URL:http://dx.doi.org/10.1103/PhysRevB.57.13418
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Metis ID: 128658