Complex Oxide Heteroepitaxial Growth of Novel Electronic and Magnetic Heterostructures
EMSL Project ID
35200
Abstract
Complex oxide heteroepitaxial growth of pure and magnetically doped perovskite films will be studied with the dual goals of: (i) enhancing understanding of the details of the growth process, and, (ii) obtaining new functionality through well-controlled growth and adequately-characterized material. Pulsed laser deposition and molecular beam epitaxy will be used as the growth techniques. Our initial focus will be on the laser ablation of LaAlO3 onto SrTiO3(001). Of interest is the relationship between stoichiometry and two-dimensional electron gas behavior at the interface. We will also explore Co and Cr doping of SrTiO3 films and SrTiO3/LaTiO3 interfaces with the aim of understanding the effect of magnetic dopants on attendant electronic properties.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2009-10-05
End Date
2012-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
A. Ney, T. Kammermeier, K. Ollefs, S. Ye, V. Ney , T. C. Kaspar, S. A. Chambers, F. Wilhelm and A. Rogalev ?Anisotropic paramagnetism of Co-doped ZnO epitaxial films?, Phys. Rev. B 81, 054420 (2010).
Capan C, G Sun, ME Bowden, and SA Chambers. 2012. "Epitaxial Cr on n-SrTiO3(001)—An ideal Ohmic contact ." Applied Physics Letters 100(5):052106. doi:10.1063/1.3680608
Chambers SA. 2011. "Understanding the mechanism of conductivity at the LaAlO3/SrTiO3(001) interface." PNNL-SA-77419, Pacific Northwest National Laboratory, Richland, WA.
Chambers SA, L Qiao, T Droubay, TC Kaspar, BW Arey, and PV Sushko. 2011. "Band Alignment, Built-In Potential, and the Absence of Conductivity at the LaCrO3/SrTiO3(001) Heterojunction." Physical Review Letters 107(20):Article No. 206802. doi:10.1103/PhysRevLett.107.206802
Chambers SA, MH Engelhard, V Shutthanandan, Z Zhu, T Droubay, L Qiao, PV Sushko, T Feng, HD Lee, T Gustafsson, E Garfunkel, AB Shah, JM Zuo, and QM Ramasse. 2010. "Instability, intermixing and electronic structure at the epitaxial LaAlO3/SrTiO3(001) heterojunction." Surface Science Reports 65(10-12):317-352. doi:10.1016/j.surfrep.2010.09.001
Droubay T, L Qiao, TC Kaspar, MH Engelhard, V Shutthanandan, and SA Chambers. 2010. "Non-stoichiometric material transfer in the pulsed laser deposition of LaAlO3." Applied Physics Letters 97(12):124105. doi:10.1063/1.3487778
Du Y, DJ Kim, TC Kaspar, SE Chamberlin, I Lyubinetsky, and SA Chambers. 2012. "In-situ imaging of the nucleation and growth of epitaxial anatase TiO2(001) films on SrTiO3(001)." Surface Science 606(17-18):1443-1449. doi:10.1016/j.susc.2012.05.010
Look DC, T Droubay, and SA Chambers. 2012. "Stable highly conductive ZnO via reduction of Zn vacancies." Applied Physics Letters 101(10):Article No. 102101. doi:10.1063/1.4748869
Look DC, T Droubay, and SA Chambers. 2013. "Optical/electrical correlations in ZnO: the plasmonic resonance phase diagram." Physica Status Solidi B, Basic Research 250(10):2118-2121. doi:10.1002/pssb.201200968
McCloy JS, JV Ryan, T Droubay, TC Kaspar, SA Chambers, and D Look. 2010. "Magnetotransport Properties of High Quality Co:ZnO and Mn:ZnO Single Crystal Pulsed Laser Deposition films: Pitfalls Associated with Magnetotransport on High Resistivity Materials ." Review of Scientific Instruments 81(6):Art. No. 063902. doi:10.1063/1.3436648
Ney A, M Opel, TC Kaspar, V Ney, S Ye, K Ollefs, T Kammermeier, S Bauer, KW Nielsen, ST Goennenwein, MH Engelhard, S Zhou, K Potzger, J Simon, W Mader, SM Heald, JC Cezar, F Wilhelm, A Rogalev, R Gross, and SA Chambers. 2010. "Advanced Spectroscopic Synchrotron Techniques to Unravel the Intrinsic Properties of Dilute Magnetic Oxides: The Case of Co:ZnO." New Journal of Physics 12:Art. No. 013020. doi:10.1088/1367-2630/12/1/013020
Qiao L, H Zhang, ME Bowden, T Varga, V Shutthanandan, RJ Colby, Y Du, BC Kabius, PV Sushko, MD Biegalski, and SA Chambers. 2013. "The Impacts of Cation Stoichiometry and Substrate Surface Quality on Nucleation, Structure, Defect Formation, and Intermixing in Complex Oxide Heteroepitaxy–LaCrO 3 on SrTiO 3 (001)." Advanced Functional Materials 23(23):2953-2963. doi:10.1002/adfm.201202655
Qiao L, T Droubay, ME Bowden, V Shutthanandan, TC Kaspar, and SA Chambers. 2011. "LaCrO3 heteroepitaxy on SrTiO3(001) by molecular beam epitaxy ." Applied Physics Letters 99(6):Art. No. 061904. doi:10.1063/1.3624473
Qiao L, T Droubay, V Shutthanandan, Z Zhu, PV Sushko, and SA Chambers. 2010. "Thermodynamic Instability at the Stoichiometric LaAlO3/SrTiO3(001) Interface." Journal of Physics. Condensed matter 22(31):Art. No. 312201. doi:10.1088/0953-8984/22/31/312201
Sushko P, L Qiao, ME Bowden, T Varga, GJ Exarhos, FK Urban, III, D Barton, and SA Chambers. 2013. "Multiband Optical Absorption Controlled by Lattice Strain in Thin-Film LaCrO3." Physical Review Letters 110(7):077401. doi:10.1103/PhysRevLett.110.077401
Zhu Z, and V Shutthanandan. 2012. "Are Cluster Ion Analysis Beams Good Choices for Hydrogen Depth Profiling Using Time-of-Flight Secondary Ion Mass Spectrometry?" Surface and Interface Analysis 44(1):89-93. doi:10.1002/sia.3776