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Low energy quasiparticle dispersion of graphite by angle‐resolved photoemission spectroscopy
Author(s) -
Grüneis A.,
Pichler T.,
Shiozawa H.,
Attaccalite C.,
Wirtz L.,
Molodtsov S. L.,
Follath R.,
Weber R.,
Rubio A.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200776107
Subject(s) - angle resolved photoemission spectroscopy , quasiparticle , inverse photoemission spectroscopy , photoemission spectroscopy , graphite , dispersion (optics) , electronic band structure , atomic physics , spectroscopy , image warping , electron , condensed matter physics , electronic structure , physics , chemistry , materials science , molecular physics , x ray photoelectron spectroscopy , optics , nuclear magnetic resonance , quantum mechanics , superconductivity , organic chemistry , artificial intelligence , computer science
The low energy electron dispersion in graphite is measured by angle‐resolved photoemission spectroscopy. The measured photoemission intensity maxima are compared to a tight‐binding calculation of the electronic band structure. We observe a strong trigonal warping of the equi‐energy contour which is well reproduced by the calculations. Furthermore we clearly show that the concept of Dirac Fermions breaks down for AB stacked graphite. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)