Raman Spectroscopy Study of Charge Order Excitations in Metallic (Sr1-xLax)3Ir2O7

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APS March Meeting 2018

Volume 63, Number 1

Monday–Friday, March 5–9, 2018; Los Angeles, California

Session E23: Bulk Iridates

8:00 AM–11:00 AM, Tuesday, March 6, 2018
LACC Room: 402B

Sponsoring Units: GMAG DMP DCOMP
Chair: Rolando Valdes Aguilar, Ohio State Univ - Columbus

Abstract ID: BAPS.2018.MAR.E23.2

Abstract: E23.00002 : Raman Spectroscopy Study of Charge Order Excitations in Metallic (Sr_1-xLa_x)₃Ir₂O₇

8:12 AM–8:24 AM

Abstract

Presenter:

Wencan Jin
(Univ of Michigan - Ann Arbor)

Authors:

Wencan Jin
(Univ of Michigan - Ann Arbor)

Siwen Li
(Univ of Michigan - Ann Arbor)

Ibrahim Boulares
(Univ of Michigan - Ann Arbor)

Zach Porter
(University of California, Santa Barbara)

Christi Peterson
(University of California, Santa Barbara)

Jianpeng Liu
(University of California, Santa Barbara)

Qiang Han
(Rutgers University)

Stephen Wilson
(University of California, Santa Barbara)

Roberto Merlin
(Univ of Michigan - Ann Arbor)

Liuyan Zhao
(Univ of Michigan - Ann Arbor)

Charge order has been universally observed in underdoped copper-oxide based high-Tc superconductors (cuprates) and shown to compete with superconductivity. In a strong spin orbit coupled cuprate analogue system, layered perovskite iridium oxides (iridates), Mott insulating, pseudogap and d-wave gap behaviors have been discovered in the single layer variant Sr2IrO4, while metal insulator transition and charge-order like Fermi surface instability has only been seen in the bilayer counterpart Sr3Ir2O7. However, a full symmetry characterization on the charge order in Sr3Ir2O7 is yet missing, making its analogy to the charge order in cuprates incomplete. In this talk, I will show our evidence of the charge order excitation and the identification of its symmetry. I will also discuss its significance in comparison with the charge order in cuprates.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.E23.2

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Bulletin of the American Physical Society

APS March Meeting 2018

Volume 63, Number 1

Monday–Friday, March 5–9, 2018; Los Angeles, California

Session E23: Bulk Iridates

Abstract: E23.00002 : Raman Spectroscopy Study of Charge Order Excitations in Metallic (Sr1-xLax)3Ir2O7

Presenter:

Authors:

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Abstract: E23.00002 : Raman Spectroscopy Study of Charge Order Excitations in Metallic (Sr_1-xLa_x)₃Ir₂O₇