Spectral weight suppression near a metal-insulator transition in a double-layer electron-doped iridate

Affeldt, Gregory and Hogan, Tom and Smallwood, Christopher L and Das, Tanmoy and Denlinger, Jonathan D and Wilson, Stephen D and Vishwanath, Ashvin and Lanzara, Alessandra (2017) Spectral weight suppression near a metal-insulator transition in a double-layer electron-doped iridate. In: PHYSICAL REVIEW B, 95 (23).

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Abstract

The perovskite iridates Sr2IrO4 and Sr3Ir2O7 represent novel systems for exploring the electronic structure that is characteristic of Mott insulators upon carrier doping. Using angle-resolved photoemission spectroscopy (ARPES), we reveal a previously unobserved suppression of spectral weight near the Fermi level in the conduction band of very lightly electron-doped (Sr1-xLax)(3)Ir2O7 followed by a loss of coherence at high temperature. The doping and temperature dependence of this suppression suggests a correspondence with the antiferromagnetic Mott state. These results connect (Sr1-xLax)(3)Ir2O7 to other doped Mott insulators and add to the growing evidence of universal physics in these systems.

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW B
Additional Information:	Copy right for this article belongs to the AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	22 Jul 2017 05:29
Last Modified:	22 Jul 2017 05:29
URI:	http://eprints.iisc.ac.in/id/eprint/57455

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