Hopping transport in SrTiO3/Nd1–xTiO3/SrTiO3 heterostructures

Thoutam, Laxman Raju; Yue, Jin; Xu, Peng; Jalan, Bharat

doi:10.1103/physrevmaterials.3.065006

Title: Hopping transport in SrTiO₃/Nd_1–xTiO₃/SrTiO₃ heterostructures

Journal Article · Thu Jun 27 00:00:00 EDT 2019 · Physical Review Materials

DOI:https://doi.org/10.1103/physrevmaterials.3.065006· OSTI ID:1612521

Thoutam, Laxman Raju ^[1]; Yue, Jin ^[1]; Xu, Peng ^[1]; Jalan, Bharat ^[1]

Univ. of Minnesota-Twin Cities, Minneapolis, MN (United States)

Electronic transport near the insulator-metal transition is investigated in the molecular beam epitaxy-grown SrTiO₃/Nd_1–xTiO₃/SrTiO₃ heterostructures using temperature dependent magnetotransport measurements. It was found that Nd vacancies introduce localized electronic states resulting in variable range hopping transport at low temperatures. At a fixed Nd-vacancy concentration, a crossover from Mott to Efros-Shklovskii variable range hopping transport was observed with decreasing temperature. With increasing disorder, a sign reversal of magnetoresistance from positive to negative was observed revealing interplay between intra-state interaction and the energy dependence of the localization length. Furthermore, these findings highlight the important role of stoichiometry when exploring intrinsic effects using heterostructure and interfaces in addition to offering broad opportunities to tailor low temperature transport using nonstoichiometry defects.

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Research Organization:: Univ. of Minnesota, Minneapolis, MN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: SC0016371; SC-0016371

OSTI ID:: 1612521

Alternate ID(s):: OSTI ID: 1546422

Journal Information:: Physical Review Materials, Vol. 3, Issue 6; ISSN 2475-9953

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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References (28)

Interface takes charge over Si Oxide electronics Schlom, Darrell G.; Mannhart, Jochen Nature Materials, Vol. 10, Issue 3, p. 168-169 https://doi.org/10.1038/nmat2965	journal	March 2011
Negative Magnetoresistance in the Anderson Localized States Fukuyama, Hidetoshi; Yoshida, Kei Journal of the Physical Society of Japan, Vol. 46, Issue 1 https://doi.org/10.1143/JPSJ.46.102	journal	January 1979
Probind the Coulomb Gap in Insulating n-Type CdSe Zhang, Youzhu; Dai, Oeihua; Levy, Miguel Physical Review Letters, Vol. 64, Issue 22 https://doi.org/10.1103/PhysRevLett.64.2687	journal	May 1990
Correlation effect on hopping conduction in a magnetic field Eto, Mikio Physical Review B, Vol. 48, Issue 7 https://doi.org/10.1103/PhysRevB.48.4933	journal	August 1993
Quasi 2D Ultrahigh Carrier Density in a Complex Oxide Broken-Gap Heterojunction Xu, Peng; Droubay, Timothy C.; Jeong, Jong Seok Advanced Materials Interfaces, Vol. 3, Issue 2 https://doi.org/10.1002/admi.201500432	journal	November 2015
Crossover of conduction mechanism in Sr ₂ IrO ₄ epitaxial thin films Lu, Chengliang; Quindeau, Andy; Deniz, Hakan Applied Physics Letters, Vol. 105, Issue 8 https://doi.org/10.1063/1.4894465	journal	August 2014
Variable-range-hopping conduction processes in oxygen deficient polycrystalline ZnO films Huang, Yung-Lung; Chiu, Shao-Pin; Zhu, Zhi-Xin Journal of Applied Physics, Vol. 107, Issue 6 https://doi.org/10.1063/1.3357376	journal	March 2010
Highly Isotropic Magnetoresistances of High Sheet-Resistance Copper-Particle Films Lin, J. J.; Yamada, Ren-ichi; Kobayashi, Shun-ichi Journal of the Physical Society of Japan, Vol. 63, Issue 12 https://doi.org/10.1143/JPSJ.63.4514	journal	December 1994
Ferromagnetism and spin-dependent transport at a complex oxide interface Ayino, Yilikal; Xu, Peng; Tigre-Lazo, Juan Physical Review Materials, Vol. 2, Issue 3 https://doi.org/10.1103/PhysRevMaterials.2.031401	journal	March 2018
Correlation effect on magnetoconductance in the strongly localized regime with spin-orbit interaction Eto, Mikio Physical Review B, Vol. 51, Issue 19 https://doi.org/10.1103/PhysRevB.51.13066	journal	May 1995
Point defects, impurities, and small hole polarons in ${GdTiO}_{3}$ Bjaalie, L.; Janotti, A.; Krishnaswamy, K. Physical Review B, Vol. 93, Issue 11 https://doi.org/10.1103/PhysRevB.93.115316	journal	March 2016
Crossover from Mott to Efros-Shklovskii variable-range-hopping conductivity in ${In}_{x}$ $O_{y}$ films Rosenbaum, Ralph Physical Review B, Vol. 44, Issue 8 https://doi.org/10.1103/PhysRevB.44.3599	journal	August 1991
Predictive Control over Charge Density in the Two-Dimensional Electron Gas at the Polar-Nonpolar ${NdTiO}_{3} / {SrTiO}_{3}$ Interface Xu, Peng; Ayino, Yilikal; Cheng, Christopher Physical Review Letters, Vol. 117, Issue 10 https://doi.org/10.1103/PhysRevLett.117.106803	journal	September 2016
LaAlO3 stoichiometry is key to electron liquid formation at LaAlO3/SrTiO3 interfaces Warusawithana, M. P.; Richter, C.; Mundy, J. A. Nature Communications, Vol. 4, Issue 1 https://doi.org/10.1038/ncomms3351	journal	August 2013
Stoichiometry-driven metal-to-insulator transition in NdTiO ₃ /SrTiO ₃ heterostructures Xu, Peng; Phelan, Daniel; Seok Jeong, Jong Applied Physics Letters, Vol. 104, Issue 8 https://doi.org/10.1063/1.4866867	journal	February 2014
Correlation Effects on Variable Range Hopping Conduction and the Magnetoresistance Kurobe, Atsushi; Kamimura, Hiroshi Journal of the Physical Society of Japan, Vol. 51, Issue 6 https://doi.org/10.1143/JPSJ.51.1904	journal	June 1982
Ferroelectricity in Strain-Free ${SrTiO}_{3}$ Thin Films Jang, H. W.; Kumar, A.; Denev, S. Physical Review Letters, Vol. 104, Issue 19, Article No. 197601 https://doi.org/10.1103/PhysRevLett.104.197601	journal	May 2010
Electronic Properties of Doped Semiconductors Shklovskii, Boris I.; Efros, Alex L. Springer Series in Solid-State Sciences https://doi.org/10.1007/978-3-662-02403-4	book	January 1984
Sign reversal of magnetoresistance in a perovskite nickelate by electron doping Ramadoss, Koushik; Mandal, Nirajan; Dai, Xia Physical Review B, Vol. 94, Issue 23 https://doi.org/10.1103/PhysRevB.94.235124	journal	December 2016
Effect of Growth Induced (Non)Stoichiometry on Interfacial Conductance in ${LaAlO}_{3} / {SrTiO}_{3}$ Breckenfeld, E.; Bronn, N.; Karthik, J. Physical Review Letters, Vol. 110, Issue 19 https://doi.org/10.1103/PhysRevLett.110.196804	journal	May 2013
Stoichiometry dependence of potential screening at $La_{(1 - δ)} Al_{(1 + δ)} O_{3} / SrTiO_{3}$ interfaces Weiland, Conan; Sterbinsky, George E.; Rumaiz, Abdul K. Physical Review B, Vol. 91, Issue 16 https://doi.org/10.1103/PhysRevB.91.165103	journal	April 2015
A polarity-induced defect mechanism for conductivity and magnetism at polar–nonpolar oxide interfaces Yu, Liping; Zunger, Alex Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms6118	journal	October 2014
Spin and quantum interference effects in hopping conductivity Frydman, A.; Ovadyahu, Zvi Solid State Communications, Vol. 94, Issue 9 https://doi.org/10.1016/0038-1098(95)00141-7	journal	June 1995
Quantum interference in variable range hopping under directional constraints Tremblay, F.; Pepper, M.; Newbury, R. Physical Review B, Vol. 40, Issue 14 https://doi.org/10.1103/PhysRevB.40.10052	journal	November 1989
Variable-range hopping and positive magnetoresistance in insulating $Y_{1 - x}$ $\Pr_{x}$ ${Ba}_{2}$ ${Cu}_{3}$ $O_{7}$ crystals Jiang, Wu; Peng, J. L.; Hamilton, J. J. Physical Review B, Vol. 49, Issue 1 https://doi.org/10.1103/PhysRevB.49.690	journal	January 1994
Low-temperature magnetoresistance of heavily FeCl3-doped polyacetylene: Hopping conduction among localized states with Coulomb correlation Kaneko, Hiroshi; Ishiguro, Takehiko; Tsukamoto, Jun Solid State Communications, Vol. 90, Issue 2 https://doi.org/10.1016/0038-1098(94)90936-9	journal	April 1994
A polarity-induced defect mechanism for conductivity and magnetism at polar-nonpolar oxide interfaces Yu, Liping; Zunger, Alex arXiv https://doi.org/10.48550/arxiv.1402.0895	text	January 2014
Variable-range-hopping conduction processes in oxygen deficient polycrystalline ZnO films Huang, Yung-Lung; Chiu, Shao-Pin; Zhu, Zhi-Xin arXiv https://doi.org/10.48550/arxiv.1702.06729	text	January 2017

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36 MATERIALS SCIENCE
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Defects
Density of states
Electrical conductivity
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Localization
Magnetotransport
Quantum interference effects

Title: Hopping transport in SrTiO3/Nd1–xTiO3/SrTiO3 heterostructures

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Title: Hopping transport in SrTiO₃/Nd_1–xTiO₃/SrTiO₃ heterostructures