Tunable disorder and localization in the rare-earth nickelates

Changan Wang, Ching Hao Chang, Angus Huang, Pei Chun Wang, Ping Chun Wu, Lin Yang, Chi Xu, Parul Pandey, Min Zeng, Roman Böttger, Horng Tay Jeng, Yu Jia Zeng, Manfred Helm, Ying Hao Chu, R. Ganesh, Shengqiang Zhou

Research output: Contribution to journalArticle

Abstract

We demonstrate that transport in metallic rare-earth nickelates can be engineered by directly tuning the electronic mean free path. Using irradiation as a tool to induce disorder, we drive this system from a metallic phase into an Anderson insulator. This proceeds via an intermediate regime which shows a thermal crossover from insulating to metallic behavior. We argue that this phase falls within the paradigm of weak localization in three dimensions. We develop a theoretical model for the temperature dependence of resistivity which shows good agreement with our data. The three-dimensional weak localization picture is supported by magnetoconductivity, which scales as ∼B2 up to several tesla. Interestingly, our data indicate that this phase lies in the Mott-Ioffe-Regel regime with the mean free path approaching the lattice constant. Upon further increasing disorder, the charge carriers are localized, leading to insulating behavior at all temperatures. Our results show that irradiation provides a "clean" tuning knob for the mean free path, without altering other system parameters. This suggests promising directions for studies of Anderson localization.

Original languageEnglish
Article number053801
JournalPhysical Review Materials
Volume3
Issue number5
DOIs
Publication statusPublished - 2019 May 2

Fingerprint

mean free path
Rare earths
rare earth elements
Tuning
Irradiation
disorders
Knobs
Charge carriers
tuning
knobs
Lattice constants
irradiation
Temperature
charge carriers
crossovers
insulators
temperature dependence
electrical resistivity
electronics
temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Wang, Changan ; Chang, Ching Hao ; Huang, Angus ; Wang, Pei Chun ; Wu, Ping Chun ; Yang, Lin ; Xu, Chi ; Pandey, Parul ; Zeng, Min ; Böttger, Roman ; Jeng, Horng Tay ; Zeng, Yu Jia ; Helm, Manfred ; Chu, Ying Hao ; Ganesh, R. ; Zhou, Shengqiang. / Tunable disorder and localization in the rare-earth nickelates. In: Physical Review Materials. 2019 ; Vol. 3, No. 5.
@article{2129738f3aa64ff8aeba47d0d920c7cb,
title = "Tunable disorder and localization in the rare-earth nickelates",
abstract = "We demonstrate that transport in metallic rare-earth nickelates can be engineered by directly tuning the electronic mean free path. Using irradiation as a tool to induce disorder, we drive this system from a metallic phase into an Anderson insulator. This proceeds via an intermediate regime which shows a thermal crossover from insulating to metallic behavior. We argue that this phase falls within the paradigm of weak localization in three dimensions. We develop a theoretical model for the temperature dependence of resistivity which shows good agreement with our data. The three-dimensional weak localization picture is supported by magnetoconductivity, which scales as ∼B2 up to several tesla. Interestingly, our data indicate that this phase lies in the Mott-Ioffe-Regel regime with the mean free path approaching the lattice constant. Upon further increasing disorder, the charge carriers are localized, leading to insulating behavior at all temperatures. Our results show that irradiation provides a {"}clean{"} tuning knob for the mean free path, without altering other system parameters. This suggests promising directions for studies of Anderson localization.",
author = "Changan Wang and Chang, {Ching Hao} and Angus Huang and Wang, {Pei Chun} and Wu, {Ping Chun} and Lin Yang and Chi Xu and Parul Pandey and Min Zeng and Roman B{\"o}ttger and Jeng, {Horng Tay} and Zeng, {Yu Jia} and Manfred Helm and Chu, {Ying Hao} and R. Ganesh and Shengqiang Zhou",
year = "2019",
month = "5",
day = "2",
doi = "10.1103/PhysRevMaterials.3.053801",
language = "English",
volume = "3",
journal = "Physical Review Materials",
issn = "2475-9953",
publisher = "American Physical Society",
number = "5",

}

Wang, C, Chang, CH, Huang, A, Wang, PC, Wu, PC, Yang, L, Xu, C, Pandey, P, Zeng, M, Böttger, R, Jeng, HT, Zeng, YJ, Helm, M, Chu, YH, Ganesh, R & Zhou, S 2019, 'Tunable disorder and localization in the rare-earth nickelates', Physical Review Materials, vol. 3, no. 5, 053801. https://doi.org/10.1103/PhysRevMaterials.3.053801

Tunable disorder and localization in the rare-earth nickelates. / Wang, Changan; Chang, Ching Hao; Huang, Angus; Wang, Pei Chun; Wu, Ping Chun; Yang, Lin; Xu, Chi; Pandey, Parul; Zeng, Min; Böttger, Roman; Jeng, Horng Tay; Zeng, Yu Jia; Helm, Manfred; Chu, Ying Hao; Ganesh, R.; Zhou, Shengqiang.

In: Physical Review Materials, Vol. 3, No. 5, 053801, 02.05.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Tunable disorder and localization in the rare-earth nickelates

AU - Wang, Changan

AU - Chang, Ching Hao

AU - Huang, Angus

AU - Wang, Pei Chun

AU - Wu, Ping Chun

AU - Yang, Lin

AU - Xu, Chi

AU - Pandey, Parul

AU - Zeng, Min

AU - Böttger, Roman

AU - Jeng, Horng Tay

AU - Zeng, Yu Jia

AU - Helm, Manfred

AU - Chu, Ying Hao

AU - Ganesh, R.

AU - Zhou, Shengqiang

PY - 2019/5/2

Y1 - 2019/5/2

N2 - We demonstrate that transport in metallic rare-earth nickelates can be engineered by directly tuning the electronic mean free path. Using irradiation as a tool to induce disorder, we drive this system from a metallic phase into an Anderson insulator. This proceeds via an intermediate regime which shows a thermal crossover from insulating to metallic behavior. We argue that this phase falls within the paradigm of weak localization in three dimensions. We develop a theoretical model for the temperature dependence of resistivity which shows good agreement with our data. The three-dimensional weak localization picture is supported by magnetoconductivity, which scales as ∼B2 up to several tesla. Interestingly, our data indicate that this phase lies in the Mott-Ioffe-Regel regime with the mean free path approaching the lattice constant. Upon further increasing disorder, the charge carriers are localized, leading to insulating behavior at all temperatures. Our results show that irradiation provides a "clean" tuning knob for the mean free path, without altering other system parameters. This suggests promising directions for studies of Anderson localization.

AB - We demonstrate that transport in metallic rare-earth nickelates can be engineered by directly tuning the electronic mean free path. Using irradiation as a tool to induce disorder, we drive this system from a metallic phase into an Anderson insulator. This proceeds via an intermediate regime which shows a thermal crossover from insulating to metallic behavior. We argue that this phase falls within the paradigm of weak localization in three dimensions. We develop a theoretical model for the temperature dependence of resistivity which shows good agreement with our data. The three-dimensional weak localization picture is supported by magnetoconductivity, which scales as ∼B2 up to several tesla. Interestingly, our data indicate that this phase lies in the Mott-Ioffe-Regel regime with the mean free path approaching the lattice constant. Upon further increasing disorder, the charge carriers are localized, leading to insulating behavior at all temperatures. Our results show that irradiation provides a "clean" tuning knob for the mean free path, without altering other system parameters. This suggests promising directions for studies of Anderson localization.

UR - http://www.scopus.com/inward/record.url?scp=85065299696&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85065299696&partnerID=8YFLogxK

U2 - 10.1103/PhysRevMaterials.3.053801

DO - 10.1103/PhysRevMaterials.3.053801

M3 - Article

AN - SCOPUS:85065299696

VL - 3

JO - Physical Review Materials

JF - Physical Review Materials

SN - 2475-9953

IS - 5

M1 - 053801

ER -