Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-10-27
J. Phys.: Condens. Matter 19, 125209 (2007).
Physics
Condensed Matter
Strongly Correlated Electrons
27 pages, 17 figures, accepted in Journal of Physics Condensed Matter
Scientific paper
10.1088/0953-8984/19/12/125209
We have performed a systematic angle-resolved photoemission spectroscopy (ARPES) study of the high-Tc cuprates La2-xSrxCuO4, ranging from the underdoped insulator to the superconductor to the overdoped metal. We have revealed a systematic doping evolution of the band dispersions and (underlying) Fermi surfaces, pseudogap and quasi-particle features under the influence of strong electron-electron interaction and electron-phonon interaction. The unusual transport and thermodynamic properties are explained by taking into account the pseudogap opening and the Fermi arc formation, due to which the carrier number decreases as the doped hole concentration decreases.
Ando Yoichi
Eisaki Hiroshi
Fujimori Atsushi
Hussain Zahid
Kakeshita T.
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