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arXiv:1001.3956 (cond-mat)
[Submitted on 22 Jan 2010 (v1), last revised 1 Oct 2010 (this version, v2)]

Title:Conducting interfaces between band insulating oxides: the LaGaO3/SrTiO3

Authors:Paolo Perna, Davide Maccariello, Milan Radovic, Umberto Scotti di Uccio, Ilaria Pallecchi, Marta Codda, Daniele Marré, Claudia Cantoni, Jaume Gazquez, Maria Varela, Steve Pennycook, Fabio Miletto Granozio
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Abstract:We show that the growth of the heterostructure LaGaO3/SrTiO3 yields the formation of a highly conductive interface. Our samples were carefully analyzed by high resolution electron microscopy, in order to assess their crystal perfection and to evaluate the abruptness of the interface. Their carrier density and sheet resistance are compared to the case of LaAlO3/SrTiO3 and a superconducting transition is found. The results open the route to widening the field of polar-non polar interfaces, pose some phenomenological constrains to their underlying physics and highlight the chance of tailoring their properties for future applications by adopting suitable polar materials.
Comments: in press Appl. Phys. Lett. 97, 1 (2010)
Subjects: Materials Science (cond-mat.mtrl-sci); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Strongly Correlated Electrons (cond-mat.str-el)
Cite as: arXiv:1001.3956 [cond-mat.mtrl-sci]
  (or arXiv:1001.3956v2 [cond-mat.mtrl-sci] for this version)
  https://doi.org/10.48550/arXiv.1001.3956
Journal reference: APPLIED PHYSICS LETTERS 97, 152111 (2010)
Related DOI: https://doi.org/10.1063/1.3496440

Submission history

From: Paolo Perna Dr [view email]
[v1] Fri, 22 Jan 2010 10:48:25 UTC (243 KB)
[v2] Fri, 1 Oct 2010 15:33:31 UTC (662 KB)
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