Estimation of matrix-element effects and determination of the Fermi surface in Bi2Sr2CaCu2O8+delta systems using angle-scanned photoemission spectroscopy

SV Borisenko, AA Kordyuk, S Legner, C Durr, M Knupfer, MS Golden, J Fink, K Nenkov, D Eckert, Guang Yang, S Abell, H Berger, L Forro, B Liang, A Maljuk, CT Lin, HB Keimer

Research output: Contribution to journalArticle

Abstract

The strong dependence of the momentum distribution of the photoelectrons on experimental conditions raises the question as to whether angle-resolved photoemission spectroscopy is able to provide an accurate reflection of the Fermi surface in Bi-based cuprate superconductors. In this paper we experimentally prove that the main contribution to the intensity variation comes from matrix-element effects and develop an approach to overcome this problem. We introduce a concept of "self-normalization" that makes the spectra essentially independent of both the matrix elements and particular experimental parameters. On the basis of this concept we suggest a simple and precise method of Fermi-surface determination in quasi-two-dimensional systems.
Original languageEnglish
Pages (from-to)094513
Number of pages1
JournalPhysical Review B
Volume6409
Issue number9
Publication statusPublished - 1 Sep 2001

Fingerprint

Dive into the research topics of 'Estimation of matrix-element effects and determination of the Fermi surface in Bi2Sr2CaCu2O8+delta systems using angle-scanned photoemission spectroscopy'. Together they form a unique fingerprint.

Cite this