Atomically flat interface between a single-terminated LaAlO3 substrate and SrTiO3 thin film is insulating
作者： Z. Q. Liu , Z. Huang , W. M. Lü , K. Gopinadhan , X. Wang
DOI: 10.1063/1.3688772
关键词:
摘要: The surface termination of (100)-oriented LaAlO3 (LAO) single crystals was examined by atomic force microscopy and optimized to produce a single-terminated atomically flat annealing. Then the STO film achieved on LAO substrate, which is expected be similar n-type interface two-dimensional electron gas (2DEG), i.e., (LaO)-(TiO2). Particularly, that can serve as mirror structure for typical 2DEG heterostructure further clarify origin 2DEG. This newly developed determined highly insulating. Additionally, this study demonstrates an approach achieve growth based substrates.
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arxiv.org 参考文章(30)
Z. Q. Liu, D. P. Leusink, X. Wang, W. M. Lü, K. Gopinadhan, A. Annadi, Y. L. Zhao, X. H. Huang, S. W. Zeng, Z. Huang, A. Srivastava, S. Dhar, T. Venkatesan, Ariando, Metal-insulator transition in SrTiO(3-x) thin films induced by frozen-out carriers. Physical Review Letters. ,vol. 107, pp. 146802- ,(2011) , 10.1103/PHYSREVLETT.107.146802
Junwoo Son, Pouya Moetakef, Bharat Jalan, Oliver Bierwagen, Nicholas J. Wright, Roman Engel-Herbert, Susanne Stemmer, Epitaxial SrTiO3 films with electron mobilities exceeding 30,000 cm2 V(-1) s(-1). Nature Materials. ,vol. 9, pp. 482- 484 ,(2010) , 10.1038/NMAT2750
Keisuke Shibuya, Tsuyoshi Ohnishi, Mikk Lippmaa, Masaharu Oshima, Metallic conductivity at the CaHfO3/SrTiO3 interface Applied Physics Letters. ,vol. 91, pp. 232106- ,(2007) , 10.1063/1.2816907
J. Yao, P. B. Merrill, S. S. Perry, D. Marton, J. W. Rabalais, Thermal stimulation of the surface termination of LaAlO3{100} Journal of Chemical Physics. ,vol. 108, pp. 1645- 1652 ,(1998) , 10.1063/1.475535
P. W. Tasker, The stability of ionic crystal surfaces Journal of Physics C: Solid State Physics. ,vol. 12, pp. 4977- 4984 ,(1979) , 10.1088/0022-3719/12/22/036
Ken-ichi Nomura, Shimpei Okami, Xiaojun Xie, Maya Mizuno, Kaori Fukunaga, Yoshimichi Ohki, Effect of Annealing on Optical Absorption of LaAlO3 at Terahertz Frequencies Japanese Journal of Applied Physics. ,vol. 50, pp. 021502- ,(2011) , 10.1143/JJAP.50.021502
James N. Eckstein, Oxide interfaces: watch out for the lack of oxygen. Nature Materials. ,vol. 6, pp. 473- 474 ,(2007) , 10.1038/NMAT1944
Jean-Paul Jacobs, Miguel Angel San Miguel, Jorge E. Sánchez-Sánchez, Luis Javier Álvarez, On the origin of the reconstruction of LaAlO3 {100} surfaces Surface Science. ,vol. 389, ,(1997) , 10.1016/S0039-6028(97)00513-X
Julie A. Bert, Beena Kalisky, Christopher Bell, Minu Kim, Yasuyuki Hikita, Harold Y. Hwang, Kathryn A. Moler, Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface Nature Physics. ,vol. 7, pp. 767- 771 ,(2011) , 10.1038/NPHYS2079
DA Dikin, M Mehta, CW Bark, CM Folkman, CB Eom, Venkat Chandrasekhar, None, Coexistence of superconductivity and ferromagnetism in two dimensions. Physical Review Letters. ,vol. 107, pp. 056802- ,(2011) , 10.1103/PHYSREVLETT.107.056802