journal article·2017-11-01Open access

Adsorption-controlled growth of La-doped BaSnO3 by molecular-beam epitaxy

Hanjong Paik, Zhen Chen, Edward Lochocki, Ariel Seidner H., Amit Verma, Nicholas Tanen, Jisung Park, Masaki Uchida, ShunLi Shang, Bi-Cheng Zhou, Mario Brützam, Reinhard Uecker, Zi-Kui Liu, Debdeep Jena, Kyle M. Shen, David A. Muller, Darrell G. Schlom

APL Materials· Volume 5· Issue 11

Abstract

Epitaxial La-doped BaSnO3 films were grown in an adsorption-controlled regime by molecular-beam epitaxy, where the excess volatile SnOx desorbs from the film surface. A film grown on a (001) DyScO3 substrate exhibited a mobility of 183 cm2 V−1 s−1 at room temperature and 400 cm2 V−1 s−1 at 10 K despite the high concentration (1.2 × 1011 cm−2) of threading dislocations present. In comparison to other reports, we observe a much lower concentration of (BaO)2 Ruddlesden-Popper crystallographic shear faults. This suggests that in addition to threading dislocations, other defects—possibly (BaO)2 crystallographic shear defects or point defects—significantly reduce the electron mobility.
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Research context

OpenAlex topics: Electronic and Structural Properties of Oxides · Diamond and Carbon-based Materials Research · Advanced Materials Characterization Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Material Science and Engineering, Cornell University 1 , Ithaca, New York 14853, USA

School of Applied and Engineering Physics, Cornell University 2 , Ithaca, New York 14853, USA

Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University 3 , Ithaca, New York 14853, USA

Department of Electrical Engineering, IIT Kanpur 4 , Kanpur 208016, India

School of Electrical and Computer Engineering, Cornell University 5 , Ithaca, New York 14853, USA

Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo 6 , Tokyo 113-8656, Japan

Department of Materials Science and Engineering, The Pennsylvania State University 7 , University Park, Pennsylvania 16802, USA

Leibniz Institute for Crystal Growth 8 , D-12489 Berlin, Germany

Kavli Institute at Cornell for Nanoscale Science 9 , Ithaca, New York 14853, USA

Funding

National Science Foundation · SRC | Microelectronics Advanced Research Corporation · DOD | USAF | AFMC | Air Force Office of Scientific Research

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