Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4

Yuelin Li, Richard D Schaller, Mengze Zhu, Donald A. Walko, Jungho Kim, Xianglin Ke, Ludi Miao, Z. Q. Mao

Research output: Contribution to journalArticle

8 Citations (Scopus)

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 2 IrO 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. Due to the unique electronic configuration of the quasiparticles, the strong lattice correlation is unexpected but extends the similarity between Sr 2 IrO 4 and cuprates to a new dimension of electron-phonon coupling which persists under highly non-equilibrium conditions.

Original languageEnglish
Article number19302
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - Jan 20 2016

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insulators
nonequilibrium conditions
cuprates
broken symmetry
superconductivity
degrees of freedom
orbitals
oxides
photons
configurations
electronics
diffraction
spectroscopy
excitation
electrons
x rays

ASJC Scopus subject areas

  • General

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Strong lattice correlation of non-equilibrium quasiparticles in a pseudospin-1/2 Mott insulator Sr2IrO4 . / Li, Yuelin; Schaller, Richard D; Zhu, Mengze; Walko, Donald A.; Kim, Jungho; Ke, Xianglin; Miao, Ludi; Mao, Z. Q.

In: Scientific Reports, Vol. 6, 19302, 20.01.2016.

Research output: Contribution to journalArticle

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 In: Scientific Reports. 2016 ; Vol. 6.
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AU - Miao, Ludi

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