Anomalous lattice contraction and emergent electronic phases in Bi-doped Eu2Ir2O7

Telang, Prachi and Mishra, Kshiti and Prando, Giacomo and Sood, AK and Singh, Surjeet (2019) Anomalous lattice contraction and emergent electronic phases in Bi-doped Eu2Ir2O7. In: PHYSICAL REVIEW B, 99 (20).

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Abstract

We study the pyrochlore series (Eu1-xBix)(2)Ir2O7 for 0 <= x <= 1. We show that for small x, the lattice undergoes an anomalous contraction but the time reversal symmetry breaking all-in/all-out state remains robust and the resistivity approaches a 1/T dependence at low T, suggesting proximity to the Weyl semimetallic phase. At the boundary near 10% Bi doping, a qualitatively different ground state emerges, which is characterized by a metallic behavior and the absence of magnetic ordering at least down to 0.02 K. For higher Bi doping, the resistivity remains metallic, and evolves gradually from T linear to T-2 to T-3/2, suggesting the possibilities of myriad different electronic phases between Eu2Ir2O7 and Bi2Ir2O7.

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW B
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copyright of this article belongs to AMER PHYSICAL SOC
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	24 Jun 2019 18:09
Last Modified:	24 Jun 2019 18:09
URI:	http://eprints.iisc.ac.in/id/eprint/63048

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