Journal
PHYSICAL REVIEW LETTERS
Volume 120, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.197201
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Funding
- U.S. DOE [DE-AC02-06CH11357]
- UIC
- ANL (by the U.S. DOE Office of Science program)
- National Institute of Standards and Technology (NIST)
- DOE BES [DEFG02-07ER46351]
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We report ordering of the cobalt electron configuration in ferromagnetic strained epitaxial LaCoO3. Specifically, the presence of charge order is demonstrated from distinct features of the resonant cobalt contribution to superstructure reflections. Density functional theory calculations show that the observed order is consistent with the spin-state periodicity predicted to give rise to ferromagnetism in LaCoO3. Through the modification of symmetry by strain, concurrent frozen charge and spin-state order are stabilized, giving rise to long-range magnetic order.
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