Origin of metallic states at the heterointerface between the band insulators LaAlO3 and SrTiO3

被引：137
|
作者：
Yoshimatsu, K. [1 ]
Yasuhara, R. [1 ]
Kumigashira, H. [1 ,2 ]
Oshima, M. [1 ,2 ]
机构：
[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan
[2] Japan Sci & Technol Agcy, CREST, Bunkyo Ku, Tokyo 1138656, Japan
来源：
PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 02期
关键词：
D O I：
10.1103/PhysRevLett.101.026802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have studied the electronic structure at the heterointerface between the band insulators LaAlO(3) and SrTiO(3) using in situ photoemission spectroscopy. Our experimental results clearly reveal the formation of a notched structure on the SrTiO(3) side due to band bending at the metallic LaAlO(3)/TiO(2)-SrTiO(3) interface. The structure, however, is absent at the insulating LaAlO(3)/SrO-SrTiO(3) interface. The present results indicate that the metallic states originate not from the charge transfer through the interface on a short-range scale but from the accumulation of carriers on a long-range scale.
引用
收藏
页数：4
相关论文
共 50 条
  • [41] Plasmons at the LaAlO3/SrTiO3 interface and in the graphene-LaAlO3/SrTiO3 double layer
    Faridi, A.
    Asgari, Reza
    PHYSICAL REVIEW B, 2017, 95 (16)
  • [42] High mobility in LaAlO3/SrTiO3 heterostructures:: Origin, dimensionality, and perspectives
    Herranz, G.
    Basletic, M.
    Bibes, M.
    Carretero, C.
    Tafra, E.
    Jacquet, E.
    Bouzehouane, K.
    Deranlot, C.
    Hamzic, A.
    Broto, J.-M.
    Barthelemy, A.
    Fert, A.
    PHYSICAL REVIEW LETTERS, 2007, 98 (21)
  • [43] Structural basis for the conducting interface between LaAlO3 and SrTiO3
    Willmott, P. R.
    Pauli, S. A.
    Herger, R.
    Schlepuetz, C. M.
    Martoccia, D.
    Patterson, B. D.
    Delley, B.
    Clarke, R.
    Kumah, D.
    Cionca, C.
    Yacoby, Y.
    PHYSICAL REVIEW LETTERS, 2007, 99 (15)
  • [44] The metallic interface between the two band insulators LaGaO3 and SrTiO3
    Nazir, S.
    Singh, N.
    Schwingenschloegl, U.
    APPLIED PHYSICS LETTERS, 2011, 98 (26)
  • [45] Strain-Gradient-Induced Modulation of Carrier Density and Mobility at the LaAlO3/SrTiO3 Heterointerface
    Zhang, Zhe
    Jiang, Weimin
    Liu, Kejian
    Liu, Mingrui
    Meng, Jianchao
    Wu, Lingyan
    Shao, Tingna
    Ling, Jingzhuo
    Yao, Chunli
    Xiong, Changmin
    Dou, Ruifen
    Nie, Jiacai
    ANNALEN DER PHYSIK, 2020, 532 (07)
  • [46] Reversible Resistance Switching of 2D Electron Gas at LaAlO3/SrTiO3 Heterointerface
    Gao, Zhaomeng
    Huang, Xiushi
    Li, Pei
    Wang, Longfei
    Wei, Ling
    Zhang, Weifeng
    Guo, Haizhong
    ADVANCED MATERIALS INTERFACES, 2018, 5 (08):
  • [47] Metallic conductivity of the heterointerface between LaFeO3 and SrTiO3
    Nishikawa, Hiroaki
    Itani, Fumiya
    Kawaguchi, Tadao
    Tanaka, Hidekazu
    Iwata, Nobuyuki
    SOLID STATE COMMUNICATIONS, 2021, 323
  • [48] LaAlO3 stoichiometry is key to electron liquid formation at LaAlO3/SrTiO3 interfaces
    Warusawithana, M. P.
    Richter, C.
    Mundy, J. A.
    Roy, P.
    Ludwig, J.
    Paetel, S.
    Heeg, T.
    Pawlicki, A. A.
    Kourkoutis, L. F.
    Zheng, M.
    Lee, M.
    Mulcahy, B.
    Zander, W.
    Zhu, Y.
    Schubert, J.
    Eckstein, J. N.
    Muller, D. A.
    Hellberg, C. Stephen
    Mannhart, J.
    Schlom, D. G.
    NATURE COMMUNICATIONS, 2013, 4
  • [49] Evolution of the Interfacial Structure of LaAlO3 on SrTiO3
    Pauli, S. A.
    Leake, S. J.
    Delley, B.
    Bjoerck, M.
    Schneider, C. W.
    Schlepuetz, C. M.
    Martoccia, D.
    Paetel, S.
    Mannhart, J.
    Willmott, P. R.
    PHYSICAL REVIEW LETTERS, 2011, 106 (03)
  • [50] Charge Writing at the LaAlO3/SrTiO3 Surface
    Xie, Yanwu
    Bell, Christopher
    Yajima, Takeaki
    Hikita, Yasuyuki
    Hwang, Harold Y.
    NANO LETTERS, 2010, 10 (07) : 2588 - 2591
12345