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Spectroscopic Evidence for Polaronic Behaviour of the Strong Spin-Orbit Insulator Sr(sup 3)Ir(sup2)O(sup 7).


DE141154710

Publication Date 2013
Personal Author King, P. D. C.; Takayama, T.; Tamai, A.; Rozbicki, E.; Walker, S. M. K.; Shi, M.; Patthey, L.; Moore, R. G.; Lu, D.; Shen, K. M.
Page Count 6
Abstract We investigate the bilayer Ruddlesden-Popper iridate Sr3Ir2O7 by temperature-dependent angle-resolved photoemission. We find a narrow-gap correlated insulator, with spectral features indicative of a polaronic ground state, strikingly similar to that observed previously for the parent compounds of the cuprate superconductors. We additionally observe similar behaviour for the single-layer cousin Sr2IrO4, indicating that strong electron-boson coupling dominates the low-energy excitations of this exotic family of materials, and providing a microscopic link between the insulating ground states of the seemingly-disparate 3d cuprates and 5d iridates.
Keywords
  • Polarons
  • Bosons
  • Coupling
  • Cuprates
  • Electrons
  • Excitation
  • Superconductors
Source Agency
  • Technical Information Center Oak Ridge Tennessee
NTIS Subject Category
  • 46 - Physics
Corporate Authors Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.
Supplemental Notes Sponsored by Department of Energy, Washington, DC.
Document Type Technical Report
NTIS Issue Number 201503
Contract Number
  • DE-AC02-76SF00515
Spectroscopic Evidence for Polaronic Behaviour of the Strong Spin-Orbit Insulator Sr(sup 3)Ir(sup2)O(sup 7).
Spectroscopic Evidence for Polaronic Behaviour of the Strong Spin-Orbit Insulator Sr(sup 3)Ir(sup2)O(sup 7).
DE141154710

  • Polarons
  • Bosons
  • Coupling
  • Cuprates
  • Electrons
  • Excitation
  • Superconductors
  • Technical Information Center Oak Ridge Tennessee
  • 46 - Physics
  • DE-AC02-76SF00515
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