PMID- 30152788
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 1361-648X (Electronic)
IS  - 0953-8984 (Linking)
VI  - 30
IP  - 40
DP  - 2018 Oct 10
TI  - Interaction between in-gap states and carriers at the conductive interface 
      between perovskite oxides.
PG  - 405002
LID - 10.1088/1361-648X/aadd33 [doi]
AB  - The 2D electron systems of SrTiO(3)/NdGaO(3) (STO/NGO) and 
      amorphous-LaAlO(3)/SrTiO(3)/NdGaO(3) (a-LAO/STO/NGO) heterojunctions were 
      explored. An obvious interaction between in-gap states (IGSs) and carriers was 
      found. The IGSs can trap a large number of carriers and enhance carrier 
      scattering. As a result of the high density of IGSs in STO, the conductivity of 
      STO/NGO was severely weakened. However, for a-LAO/STO/NGO heterojunctions, the 
      high carrier density can reduce the effect of IGSs through the electrostatic 
      screening effect. The competition between IGSs and the screening effect of 
      carriers results in an insulator-metal transition and a strange temperature 
      dependence of carrier density. We also explored the interaction between IGSs and 
      carriers theoretically. A mathematical description was proposed and the 
      calculated results showed good agreement with experimental findings.
FAU - Li, Chengjian
AU  - Li C
AD  - Department of Physics, Beijing Normal University, Beijing 100875, People's 
      Republic of China.
FAU - Jiang, Weimin
AU  - Jiang W
FAU - Liu, Mingrui
AU  - Liu M
FAU - Hong, Yanpeng
AU  - Hong Y
FAU - Xue, Hongxia
AU  - Xue H
FAU - Meng, Jianchao
AU  - Meng J
FAU - Zhang, Zhe
AU  - Zhang Z
FAU - Li, Yongchun
AU  - Li Y
FAU - Liu, Kejian
AU  - Liu K
FAU - He, Lin
AU  - He L
FAU - Dou, Ruifen
AU  - Dou R
FAU - Xiong, Changmin
AU  - Xiong C
FAU - Nie, Jiacai
AU  - Nie J
LA  - eng
PT  - Journal Article
DEP - 20180828
PL  - England
TA  - J Phys Condens Matter
JT  - Journal of physics. Condensed matter : an Institute of Physics journal
JID - 101165248
EDAT- 2018/08/29 06:00
MHDA- 2018/08/29 06:01
CRDT- 2018/08/29 06:00
PHST- 2018/08/29 06:00 [pubmed]
PHST- 2018/08/29 06:01 [medline]
PHST- 2018/08/29 06:00 [entrez]
AID - 10.1088/1361-648X/aadd33 [doi]
PST - ppublish
SO  - J Phys Condens Matter. 2018 Oct 10;30(40):405002. doi: 10.1088/1361-648X/aadd33. 
      Epub 2018 Aug 28.