Asymmetric electroresistance of cluster glass state in manganites

James Lourembam; Junfeng Ding; Ashok Bera; Weinan Lin; Tao Wu

doi:10.1063/1.4870480

Asymmetric electroresistance of cluster glass state in manganites

James Lourembam, Junfeng Ding, Ashok Bera, Weinan Lin, Tao Wu

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Abstract

We report the electrostatic modulation of transport in strained Pr0.65(Ca0.75Sr0.25)0.35MnO3 thin films grown on SrTiO3 by gating with ionic liquid in electric double layer transistors (EDLT). In such manganite films with strong phase separation, a cluster glass magnetic state emerges at low temperatures with a spin freezing temperature of about 99 K, which is accompanied by the reentrant insulating state with high resistance below 30 K. In the EDLT, we observe bipolar and asymmetric modulation of the channel resistance, as well as an enhanced electroresistance up to 200% at positive gate bias. Our results provide insights on the carrier-density-dependent correlated electron physics of cluster glass systems.

Original language	English (US)
Pages (from-to)	133508
Journal	Applied Physics Letters
Volume	104
Issue number	13
DOIs	https://doi.org/10.1063/1.4870480
State	Published - Mar 31 2014

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title = "Asymmetric electroresistance of cluster glass state in manganites",

abstract = "We report the electrostatic modulation of transport in strained Pr0.65(Ca0.75Sr0.25)0.35MnO3 thin films grown on SrTiO3 by gating with ionic liquid in electric double layer transistors (EDLT). In such manganite films with strong phase separation, a cluster glass magnetic state emerges at low temperatures with a spin freezing temperature of about 99 K, which is accompanied by the reentrant insulating state with high resistance below 30 K. In the EDLT, we observe bipolar and asymmetric modulation of the channel resistance, as well as an enhanced electroresistance up to 200% at positive gate bias. Our results provide insights on the carrier-density-dependent correlated electron physics of cluster glass systems.",

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T1 - Asymmetric electroresistance of cluster glass state in manganites

AU - Lourembam, James

AU - Ding, Junfeng

AU - Bera, Ashok

AU - Lin, Weinan

AU - Wu, Tao

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2014/3/31

Y1 - 2014/3/31

N2 - We report the electrostatic modulation of transport in strained Pr0.65(Ca0.75Sr0.25)0.35MnO3 thin films grown on SrTiO3 by gating with ionic liquid in electric double layer transistors (EDLT). In such manganite films with strong phase separation, a cluster glass magnetic state emerges at low temperatures with a spin freezing temperature of about 99 K, which is accompanied by the reentrant insulating state with high resistance below 30 K. In the EDLT, we observe bipolar and asymmetric modulation of the channel resistance, as well as an enhanced electroresistance up to 200% at positive gate bias. Our results provide insights on the carrier-density-dependent correlated electron physics of cluster glass systems.

AB - We report the electrostatic modulation of transport in strained Pr0.65(Ca0.75Sr0.25)0.35MnO3 thin films grown on SrTiO3 by gating with ionic liquid in electric double layer transistors (EDLT). In such manganite films with strong phase separation, a cluster glass magnetic state emerges at low temperatures with a spin freezing temperature of about 99 K, which is accompanied by the reentrant insulating state with high resistance below 30 K. In the EDLT, we observe bipolar and asymmetric modulation of the channel resistance, as well as an enhanced electroresistance up to 200% at positive gate bias. Our results provide insights on the carrier-density-dependent correlated electron physics of cluster glass systems.

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JO - Applied Physics Letters

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Asymmetric electroresistance of cluster glass state in manganites

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