Inferring effective interactions from the local density of states: application to STM data from Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$

Physics – Condensed Matter – Superconductivity

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

7 pages, 7 figures

Scientific paper

10.1103/PhysRevB.74.174521

While the influence of impurities on the local density of states (LDOS) in a metal is notoriously non-local due to interference effects, low order moments of the LDOS in general can be shown to depend only on the local structure of the Hamiltonian. Specifically, we show that an analysis of the spatial variations of these moments permits one to ``work backwards'' from scanning tunneling microscopy (STM) data to infer the local structure of the underlying effective Hamiltonian. Applying this analysis to STM data from the high temperature superconductor, Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$, we find that the variations of the electro-chemical potential are remarkably small (i.e., the disorder is, in a sense, weak) but that there are large variations in the local magnitude of the d-wave gap parameter.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Inferring effective interactions from the local density of states: application to STM data from Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Inferring effective interactions from the local density of states: application to STM data from Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inferring effective interactions from the local density of states: application to STM data from Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-99370

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.