Doping dependence of the Fermi surface in(Bi,Pb)2Sr

Abstract

General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. A detailed and systematic angle-resolved photoemission spectroscopy investigation of the doping dependence of the normal-state Fermi surface ͑FS͒ of modulation-free ͑Pb,Bi͒-2212 is presented. The FS does not change in topology away from hole like at any stage. The FS area does not follow the usual curve describing T c vs x for the hole-doped cuprates, but is downshifted in doping by ca. 0.05 holes per Cu site, indicating the consequences of a significant bilayer splitting of the FS across the whole doping range. The strong k dependence of the FS width is shown to be doping independent. The relative strength of the shadow FS has a doping dependence mirroring that of T c .

Temperature Dependence of the Electronic Structure of FeSe

“…ним з яких є «експериментальна дисперсія». При цьому розрізня-ють аналізу кривих розподілу за імпульсом (MDC) [17] і за енергією (EDC) та одержують, відповідно, MDC-й EDC-дисперсії, які загалом не збігаються [18,19]. Перша так звана метода MDC потребує моде-лю (функції), за допомогою якого апроксимується набір MDC, а з коефіцієнтів апроксимації одержується положення зони та залеж-ність уявної частини власної енергії квазичастинки від енергії.…”

Angle-resolved photoemission spectra of the Hubbard model

“…Some of these experiments seem to indicate that, at least for LSCO, the Fermi surface switches from being holelike, centered at M = (π, π), for low doping to being electron-like, centered at the zone center Γ = (0, 0) for high doping with a volume consistent with the doping level 3,6,7 . In other results, particularly for bilayer compounds like YBCO or Bi2212 3,8 , the Fermi surface seems to remain hole-like independent of the doping level. Especially for those latter compounds, further complications in the experiments arise from superstructures due to umklapp scattering and the possibility of bilayer splittings in YBCO and Bi2212 3,9 .…”

Life of the nodal quasiparticles in Bi-2212 as seen by ARPES

“…We studied both the led-doped superstructure-free Bi(Pb)-2212 and reach of replicas pure Bi-2212. However, as the main line, we use the well characterized superstructurefree samples of a wide doping range (x = 0.11 -0.22), for which the charge carrier densities have been derived from the measured Fermi-surface area (and appeared to be consistent with their T c ) [19] and the tight-binding parameters have been determined [6]. The parameters of the band structure of the pure Bi-2212 samples which we have measured are also in agreement with their doping level estimated from the T c measurements.…”