Orbital-dependent polaron formation in the relativistic Mott insulator Sr2IrO4
- Title
- Orbital-dependent polaron formation in the relativistic Mott insulator Sr2IrO4
- Author
- 문순재
- Keywords
- TEMPERATURE; PHONON; PLANE
- Issue Date
- 2014-07
- Publisher
- American Physical Society
- Citation
- Physical Review B, 2014, 90(4), P.041105(R), 5P.
- Abstract
- We use optical spectroscopy to investigate the electron-phonon interaction in Sr2IrO4, a well-known 5d transition metal oxide with spin-orbit entangled states. The temperature evolution in the optical spectra is well described by the Frohlich polaron model, indicating a large electron-phonon interaction. We further find that electrons in different orbitals selectively couple with different phonon modes. While J(eff) = 3/2 holes do not seem to couple with any phonons, J(eff) = 1/2 and 3z(2)-r(2) electrons mainly couple with in-plane and out-of-plane Ir-O bending modes, respectively. The symmetries of the orbitals and phonons are consistent with our observations.
- URI
- https://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.041105http://hdl.handle.net/20.500.11754/53468
- ISSN
- 1098-0121; 1550-235X
- DOI
- 10.1103/PhysRevB.90.041105
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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