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Phonon self-energy and origin of anomalous neutron scattering spectra in SnTe and PbTe thermoelectrics
C. W. Li, O. Hellman, J. Ma +8
The anharmonic lattice dynamics of rock-salt thermoelectric compounds SnTe and PbTe are investigated with inelastic neutron scattering (INS) and first-principles calculations. The…
Jeff=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca4IrO6
S. Calder, G. -X Cao, S. Okamoto +7
The Jeff=1/2 state is manifested in systems with large cubic crystal field splitting and spin-orbit coupling that are comparable to the on-site Coulomb interaction, U. 5d transitio…
The influence of spin fluctuations on the thermal conductivity in superconducting Ba(Fe_{1-x}Co_x)_2As_2
Andrew F. May, Michael A. McGuire, Jonathan E. Mitchell +2
The thermal conductivity of electron-doped Ba(FeCo)As single crystals is investigated below 200K, with an emphasis on the behavior near the magnetic and superco…
Magnetism and electronic structure of La2ZnIrO6 and La2MgIrO6: candidate Jeff =1/2 Mott insulators
Guixin Cao, Alaska Subedi, S. Calder +9
We study experimentally and theoretically the electronic and magnetic properties of two insulating double perovskites that show similar atomic and electronic structure, but differe…
Microscopic and Spectroscopic Evidence for a Slater Metal-Insulator Transition in Sr2IrO4
Qing Li, Guixin Cao, Satoshi Okamoto +12
Layered 5d transition metal oxides (TMOs) have attracted significant interest in recent years because of the rich physical properties induced by the interplay between spin-orbit co…