Journal
SCIENTIFIC REPORTS
Volume 3, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep02882
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Funding
- NSF [DMR-1002622, DMR-1005562]
- Oak Ridge National Laboratory by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1005562] Funding Source: National Science Foundation
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Chemical doping in materials is known to give rise to emergent phenomena. These phenomena are extremely difficult to predict a priori, because electron-electron interactions are entangled with local environment of assembled atoms. Scanning tunneling microscopy and low energy electron diffraction are combined to investigate how the local electronic structure is correlated with lattice distortion on the surface of Sr-3(Ru1-xMnx)(2)O-7, which has double-layer building blocks formed by (Ru/Mn)O-6 octahedra with rotational distortion. The presence of doping-dependent tilt distortion of (Ru/Mn)O-6 octahedra at the surface results in a C-2v broken symmetry in contrast with the bulk C-4v counterpart. It also enables us to observe two Mn sites associated with the octahedral rotation in the bulk through the chirality of local electronic density of states surrounding Mn, which is randomly distributed. These results serve as fingerprint of chemical doping on the atomic scale.
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