Charge modulation driven Fermi surface of Pb-Bi2201

Abstract

It is well known that the (1x5) superstructure of Bi cuprate superconductors will be suppressed due to optimum doping with Pb. Nevertheless, a Fermi surface map of (Pb,La)-Bi2201 (Pb = 0.4 and La = 0.4) determined by angular resolved photoemission (ARPES) revealed additional Fermi surface features. Low energy electron diffraction and X-ray diffraction of these samples showed no sign of any superstructure. Scanning tunneling microscopy (STM), on the other hand, revealed two distinct modulations of the charge density, one of (1x32) and a second of (6x6) periodicity. The wave vectors of both modulations have been extracted and used to simulate the corresponding Fermi surface, which is compared with the experimental one. The origin of these modulations is discussed in terms of dopant ordering.

4 pages, 4 figures, accepted for Solid State Communications

References in corpus (6)

• Angle-resolved photoemission spectroscopy of the cuprate superconductors
• Scanning tunneling spectroscopy of high-temperature superconductors
• The Electronic Nature of High Temperature Cuprate Superconductors
• Measuring the gap in ARPES experiments
• Correlating off-stoichiometric doping with nanoscale electronic disorder and quasiparticle interference pattern in high-$T_c$ superconductor Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Charge ordering and self-assembled nanostructures in a fcc Coulomb lattice gas

Cited by in corpus (1)

• Structural behavior of Pb${}_y$Bi${}_{1.95-y}$Sr${}_{1.49}$La${}_{0.4}$Cu${}_{1.15}$O${}_{6+\delta }$ for 0<y<0.53