Scientific article

On the Fermi Surface of YBa2Cu3O7-δ

Published inEurophysics Letters, vol. 18, no. 4, p. 313-317
Publication date1992

We show that the signature of a Fermi surface sheet of YBa2Cu3O7-δ may be obtained unambiguously from twinned crystals. Comparison of electron-positron momentum density from YBa2Cu3O7-δ measured both in insulating and (superconducting) twinned phases leads to a decisive further proof of the existence of the Fermi surface in the metallic YBa2Cu3O7-δ. In addition, measurements on untwinned YBa2Cu3O7-δ single crystals reveal also a "ridge" Fermi surface sheet attributed by band structure calculations to CuO chains.

Citation (ISO format)
PETER, Martin et al. On the Fermi Surface of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>. In: Europhysics Letters, 1992, vol. 18, n° 4, p. 313–317. doi: 10.1209/0295-5075/18/4/006
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Article (Published version)
ISSN of the journal0295-5075

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