Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr 2IrO 4
Abstract
In correlated oxides the coupling of quasiparticles to other degrees of freedom such as spin and lattice plays critical roles in the emergence of symmetry-breaking quantum ordered states such as high temperature superconductivity. We report a strong lattice coupling of photon-induced quasiparticles in spin-orbital coupling Mott insulator Sr 2IrO 4 probed via optical excitation. Combining time-resolved x-ray diffraction and optical spectroscopy techniques, we reconstruct a spatiotemporal map of the diffusion of these quasiparticles. Lastly, due to the unique electronic configuration of the quasiparticles, the strong lattice correlation is unexpected but extends the similarity between Sr 2IrO 4 and cuprates to a new dimension of electron-phonon coupling which persists under highly non-equilibrium conditions.
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
- Michigan State Univ., East Lansing, MI (United States)
- Tulane Univ., New Orleans, LA (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1258620
- Alternate Identifier(s):
- OSTI ID: 1392286
- Grant/Contract Number:
- AC02-06CH11357; DMR-1205469; W911NF0910530
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Scientific Reports
- Additional Journal Information:
- Journal Volume: 6; Journal ID: ISSN 2045-2322
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Li, Yuelin, Schaller, Richard D., Zhu, Mengze, Walko, Donald A., Kim, Jungho, Ke, Xianglin, Miao, Ludi, and Mao, Z. Q. Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4. United States: N. p., 2016.
Web. doi:10.1038/srep19302.
Li, Yuelin, Schaller, Richard D., Zhu, Mengze, Walko, Donald A., Kim, Jungho, Ke, Xianglin, Miao, Ludi, & Mao, Z. Q. Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4. United States. doi:10.1038/srep19302.
Li, Yuelin, Schaller, Richard D., Zhu, Mengze, Walko, Donald A., Kim, Jungho, Ke, Xianglin, Miao, Ludi, and Mao, Z. Q. Wed .
"Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4". United States. doi:10.1038/srep19302. https://www.osti.gov/servlets/purl/1258620.
@article{osti_1258620,
title = {Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4},
author = {Li, Yuelin and Schaller, Richard D. and Zhu, Mengze and Walko, Donald A. and Kim, Jungho and Ke, Xianglin and Miao, Ludi and Mao, Z. Q.},
abstractNote = {In correlated oxides the coupling of quasiparticles to other degrees of freedom such as spin and lattice plays critical roles in the emergence of symmetry-breaking quantum ordered states such as high temperature superconductivity. We report a strong lattice coupling of photon-induced quasiparticles in spin-orbital coupling Mott insulator Sr2IrO4 probed via optical excitation. Combining time-resolved x-ray diffraction and optical spectroscopy techniques, we reconstruct a spatiotemporal map of the diffusion of these quasiparticles. Lastly, due to the unique electronic configuration of the quasiparticles, the strong lattice correlation is unexpected but extends the similarity between Sr2IrO4 and cuprates to a new dimension of electron-phonon coupling which persists under highly non-equilibrium conditions.},
doi = {10.1038/srep19302},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {1}
}
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