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RESEARCH PRODUCT
Lattice Instability and Competing Spin Structures in the Double Perovskite InsulatorSr2FeOsO6
Avijit Kumar PaulClaudia FelserMartin JansenPaula M. AbdalaBinghai YanDaniel M. TöbbensPeter AdlerVadim KsenofontovAndreas HoserManfred Reehuissubject
Materials scienceSpin polarizationMössbauer effectCondensed matter physicsbusiness.industryGeneral Physics and AstronomyInstabilityCondensed Matter::Materials ScienceTetragonal crystal systemSemiconductorFerrimagnetismLattice (order)Condensed Matter::Strongly Correlated ElectronsDensity functional theorybusinessdescription
The semiconductor Sr2FeOsO6, depending on temperature, adopts two types of spin structures that differ in the spin sequence of ferrimagnetic iron-osmium layers along the tetragonal c axis. Neutron powder diffraction experiments, 57Fe Mossbauer spectra, and density functional theory calculations suggest that this behavior arises because a lattice instability resulting in alternating iron-osmium distances fine-tunes the balance of competing exchange interactions. Thus, Sr2FeOsO6 is an example of a double perovskite, in which the electronic phases are controlled by the interplay of spin, orbital, and lattice degrees of freedom.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-16 | Physical Review Letters |