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On the Surfacegrived State of Cleaved YBa_{2}Cu_{3}O_{7-δ} Single Crystals

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Harm S., Mante G., Manzke R., Fink J., Skibowski M.

Acta Physica Polonica A

1992

vol. 82

issue 2

349-354

Angle-resolved photoemission experiments on the cleaved surface of YBa_{2}Cu_{3}O_{7-δ} single crystals revealed an intrinsic surface-derived electronic state around the X and Y point of the Brillouin zone with 0.92 eV binding energy. A surface electronic structure different to the bulk can be of basic importance for the surface superconductivity of this high-T_{c} cuprate. Here we briefly review recent experimental results and present new hydrogen adsorption experiments, demonstrating the surface character of the 0.92 eV state.

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1 Acta Physica Polonica A

1 1992

1 Fink J.

1 Harm S.

1 Mante G.

1 Manzke R.

1 Skibowski M.

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On the Surfacegrived State of Cleaved YBa_{2}Cu_{3}O_{7-δ} Single Crystals