Modulated Transport Behavior of Two-Dimensional Electron Gas at Ni-Doped LaAlO3/SrTiO3 Heterointerfaces

被引：38
作者：
Yan, Hong [1 ]
Zhang, Zhaoting [1 ]
Wang, Shuanhu [1 ]
Zhang, Hongrui [1 ]
Chen, Changle [1 ]
Jin, Kexin [1 ]
机构：
[1] Northwestern Polytech Univ, Shaanxi Key Lab Condensed Matter Struct & Propert, Sch Sci, Xian 710072, Shaanxi, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2017年 / 9卷 / 44期
基金：
中国国家自然科学基金;
关键词：
LaAlO3/SrTiO3; heterointerfaces; two-dimensional electron gas; persistent photoconductivity; photo-Hall effect; Kondo effect; PERSISTENT PHOTOCONDUCTIVITY; OXIDE INTERFACES; MODEL; SUPERCONDUCTIVITY; SUPPRESSION; COEXISTENCE;
D O I：
10.1021/acsami.7b11727
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Modulating transport behaviors of two-dimensional electron gases are of critical importance for applications of the next-generation multifunctional oxide electronics. In this study, transport behaviors of LaAlO3/SrTiO3 heterointerfaces modified through the Ni dopant and the light irradiation have been investigated. Through the Ni dopant, the resistances increase significantly and a resistance upturn phenomenon due to the Kondo effect is observed at T < 40 K. Under a 360 nm light irradiation, the interfaces exhibit a persistent photo-conductivity and a suppressed Kondo effect at low temperature due to the increased mobility measured through the photo-Hall method. Moreover, the relative changes in resistance of interfaces induced by light are increased from 800 to 6600% at T = 12 K with increasing the substitution of Ni, which is discussed by the band bending and the lattice effect due to the Ni dopant. This work paves the way for better controlling the emerging properties of complex oxide heterointerfaces and would be helpful for photoelectric device applications based on all-oxides.
引用
收藏
页码：39011 / 39017
页数：7
相关论文
共 60 条
[1]   INFRARED CATASTROPHE IN FERMI GASES WITH LOCAL SCATTERING POTENTIALS [J].
ANDERSON, PW .
PHYSICAL REVIEW LETTERS, 1967, 18 (24) :1049-&
[2]   Photo-resistive properties of LaAl0.6Cr0.4O3/SrTiO3 heterostructures: a comparative study with LaAlO3/SrTiO3 [J].
Aswin, V ;
Kumar, Pramod ;
Pal, Prabir ;
Dogra, Anjana .
OPTICS LETTERS, 2016, 41 (06) :1134-1137
[3]   Gate-tuned superfluid density at the superconducting LaAlO3/SrTiO3 interface [J].
Bert, Julie A. ;
Nowack, Katja C. ;
Kalisky, Beena ;
Noad, Hilary ;
Kirtley, John R. ;
Bell, Chris ;
Sato, Hiroki K. ;
Hosoda, Masayuki ;
Hikita, Yasayuki ;
Hwang, Harold Y. ;
Moler, Kathryn A. .
PHYSICAL REVIEW B, 2012, 86 (06)
[4]   Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface [J].
Bert, Julie A. ;
Kalisky, Beena ;
Bell, Christopher ;
Kim, Minu ;
Hikita, Yasuyuki ;
Hwang, Harold Y. ;
Moler, Kathryn A. .
NATURE PHYSICS, 2011, 7 (10) :767-771
[5]   Note: Fiber optic transport probe for Hall measurements under light and magnetic field at low temperatures: Case study of a two dimensional electron gas [J].
Bhadauria, P. P. S. ;
Gupta, Anurag ;
Kumar, Pramod ;
Dogra, Anjana ;
Budhani, R. C. .
REVIEW OF SCIENTIFIC INSTRUMENTS, 2015, 86 (05)
[6]   Magnetic effects at the interface between non-magnetic oxides [J].
Brinkman, A. ;
Huijben, M. ;
Van Zalk, M. ;
Huijben, J. ;
Zeitler, U. ;
Maan, J. C. ;
Van der Wiel, W. G. ;
Rijnders, G. ;
Blank, D. H. A. ;
Hilgenkamp, H. .
NATURE MATERIALS, 2007, 6 (07) :493-496
[7]   Palladium Nanoparticle Enhanced Giant Photoresponse at LaAl3/SrTiO3 Two-Dimensional Electron Gas Heterostructures [J].
Chan, Ngai Yui ;
Zhao, Meng ;
Wang, Ning ;
Au, Kit ;
Wang, Juan ;
Chan, Lai Wa Helen ;
Dai, Jiyan .
ACS NANO, 2013, 7 (10) :8673-8679
[8]  
Chen JH, 2011, NAT PHYS, V7, P535, DOI [10.1038/nphys1962, 10.1038/NPHYS1962]
[9]  
Chen YZ, 2015, NAT MATER, V14, P801, DOI [10.1038/nmat4303, 10.1038/NMAT4303]
[10]   On the origin of metallic conductivity at the interface of LaAlO3/SrTiO3 [J].
Chen, Y. Z. ;
Christensen, D. V. ;
Trier, F. ;
Pryds, N. ;
Smith, A. ;
Linderoth, S. .
APPLIED SURFACE SCIENCE, 2012, 258 (23) :9242-9245
123456