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Title: Microscopic Theory of Resonant Soft-X-Ray Scattering in Materials with Charge Order: The Example of Charge Stripes in High-Temperature Cuprate Superconductors

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [1]
  1. Harvard Univ., Cambridge, MA (United States)
  2. Univ. of Illinois at Urbana-Champaign, IL (United States)

In this work, we present a microscopic theory of resonant soft-x-ray scattering that accounts for the delocalized character of valence electrons. Unlike past approaches based on local form factors, our functional determinant method treats realistic band structures. This method builds upon earlier theoretical work in mesoscopic physics and accounts for excitonic effects as well as the orthogonality catastrophe arising from interaction between the core hole and the valence band electrons. We show that the two-peak structure observed near the O K edge of stripe-ordered La1.875Ba0.125CuO4 is due to dynamical nesting within the canonical cuprate band structure. Our results provide evidence for reasonably well-defined, high-energy quasiparticles in cuprates and establish resonant soft-x-ray scattering as a bulk-sensitive probe of the electron quasiparticles.

Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
FG02-06ER46285; DMR-07-05472
OSTI ID:
1958848
Alternate ID(s):
OSTI ID: 1103967
Journal Information:
Physical Review Letters, Vol. 110, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

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Cited By (2)

Quasi-particle interference of heavy fermions in resonant x-ray scattering journal October 2016
Extending resonant inelastic X-ray scattering to the extreme ultraviolet journal May 2015

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