Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator Sr3Ir2O7

Phil King; T. Takayama; Anna Tamai; Emil Jerzy Rozbicki; Siobhan Ellen McKeown Walker; M. Shi; L. Patthey; R.G. Moore; D. Lu; K. M. Shen; H. Takagi; Felix Baumberger

doi:10.1103/PhysRevB.87.241106

Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator Sr₃Ir₂O₇

Phil King
, T. Takayama
, Anna Tamai
, Emil Jerzy Rozbicki
, Siobhan Ellen McKeown Walker
, M. Shi
, L. Patthey
, R.G. Moore
, D. Lu
, K. M. Shen
, H. Takagi
, Felix Baumberger

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the bilayer Ruddlesden-Popper iridate Sr₃Ir₂O₇ by temperature-dependent angle-resolved photoemission. At low temperatures, we find a fully gapped correlated insulator, characterized by a small charge gap and narrow bandwidths. The low-energy spectral features show a pronounced temperature-dependent broadening and non-quasiparticle-like Gaussian line shapes. Together, these spectral features provide experimental evidence for a polaronic ground state. We observe similar behavior for the single-layer cousin Sr₂IrO₄, indicating that strong electron-boson coupling dominates the low-energy excitations of this exotic family of 5d compounds.

Original language	English
Article number	241106
Number of pages	6
Journal	Physical Review. B, Condensed matter and materials physics
Volume	87
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.87.241106
Publication status	Published - 24 Jun 2013

Keywords

SR2IRO4
Oxide

Access to Document

10.1103/PhysRevB.87.241106

king2013physrevv241106
©2013 American Physical Society.
Final published version, 1.74 MB

Handle.net

Persistent link to portal record

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems
Wahl, P. (PI), Baumberger, F. (CoI), Davis, S. (CoI), Green, A. (CoI), Hooley, C. (CoI), Keeling, J. (CoI) & Mackenzie, A. (CoI)
EPSRC
1/09/11 → 31/08/17
Project: Standard

Cite this

King, P., Takayama, T., Tamai, A., Rozbicki, E. J., McKeown Walker, S. E., Shi, M., Patthey, L., Moore, R. G., Lu, D., Shen, K. M., Takagi, H., & Baumberger, F. (2013). Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator Sr₃Ir₂O₇. Physical Review. B, Condensed matter and materials physics, 87(24), Article 241106. https://doi.org/10.1103/PhysRevB.87.241106

@article{6fb70f32ce704f04b2e14f465606fee1,

title = "Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator Sr3Ir2O7",

abstract = "We investigate the bilayer Ruddlesden-Popper iridate Sr3Ir2O7 by temperature-dependent angle-resolved photoemission. At low temperatures, we find a fully gapped correlated insulator, characterized by a small charge gap and narrow bandwidths. The low-energy spectral features show a pronounced temperature-dependent broadening and non-quasiparticle-like Gaussian line shapes. Together, these spectral features provide experimental evidence for a polaronic ground state. We observe similar behavior for the single-layer cousin Sr2IrO4, indicating that strong electron-boson coupling dominates the low-energy excitations of this exotic family of 5d compounds.",

keywords = "SR2IRO4, Oxide",

author = "Phil King and T. Takayama and Anna Tamai and Rozbicki, \{Emil Jerzy\} and \{McKeown Walker\}, \{Siobhan Ellen\} and M. Shi and L. Patthey and R.G. Moore and D. Lu and Shen, \{K. M.\} and H. Takagi and Felix Baumberger",

year = "2013",

month = jun,

day = "24",

doi = "10.1103/PhysRevB.87.241106",

language = "English",

volume = "87",

journal = "Physical Review. B, Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator Sr3Ir2O7

AU - King, Phil

AU - Takayama, T.

AU - Tamai, Anna

AU - Rozbicki, Emil Jerzy

AU - McKeown Walker, Siobhan Ellen

AU - Shi, M.

AU - Patthey, L.

AU - Moore, R.G.

AU - Lu, D.

AU - Shen, K. M.

AU - Takagi, H.

AU - Baumberger, Felix

PY - 2013/6/24

Y1 - 2013/6/24

N2 - We investigate the bilayer Ruddlesden-Popper iridate Sr3Ir2O7 by temperature-dependent angle-resolved photoemission. At low temperatures, we find a fully gapped correlated insulator, characterized by a small charge gap and narrow bandwidths. The low-energy spectral features show a pronounced temperature-dependent broadening and non-quasiparticle-like Gaussian line shapes. Together, these spectral features provide experimental evidence for a polaronic ground state. We observe similar behavior for the single-layer cousin Sr2IrO4, indicating that strong electron-boson coupling dominates the low-energy excitations of this exotic family of 5d compounds.

AB - We investigate the bilayer Ruddlesden-Popper iridate Sr3Ir2O7 by temperature-dependent angle-resolved photoemission. At low temperatures, we find a fully gapped correlated insulator, characterized by a small charge gap and narrow bandwidths. The low-energy spectral features show a pronounced temperature-dependent broadening and non-quasiparticle-like Gaussian line shapes. Together, these spectral features provide experimental evidence for a polaronic ground state. We observe similar behavior for the single-layer cousin Sr2IrO4, indicating that strong electron-boson coupling dominates the low-energy excitations of this exotic family of 5d compounds.

KW - SR2IRO4

KW - Oxide

U2 - 10.1103/PhysRevB.87.241106

DO - 10.1103/PhysRevB.87.241106

M3 - Article

SN - 1098-0121

VL - 87

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 24

M1 - 241106

ER -