Journal
PHYSICAL REVIEW B
Volume 80, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.092509
Keywords
band structure; copper compounds; X-ray scattering
Funding
- U.S. Department of Energy [DE-AC02-05CH11231]
- Computational Materials Science Network (CMSN)
- Division of Materials Science and Engineering
- Basic Energy Sciences
- DOE [DE-AC02-76SF00515]
- NSF [DMR-0705086]
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We present a resonant inelastic scattering (RIXS) study using of CuB2O4, which contains a lattice of CuO4 plaquettes electronically isolated by B+3 ions. The observed Cu K-edge spectra show a small number of well-separated features, and the simple electronic structure of CuB2O4 allows us to explore RIXS phenomenology. We find a low-energy feature that cannot be attributed to the same charge-transfer excitation discussed in other cuprates and is likely a d -> d transition thought to be forbidden under common considerations of K-edge RIXS.
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