Metallic interfaces in a CaTiO3/LaTiO3 superlattice

doi:10.1103/PhysRevMaterials.4.104008

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Metallic interfaces in a CaTiO3/LaTiO3 superlattice
	Xiao, Shaozhu ; Wen, Fangdi ; Liu, Xiaoran ; Kareev, M.; Zhang, Ruyi ; Song, Yang ; Pei, Yujuan ; Bi, Jiachang ; He, Shaolong ; Lu, Jiangbo
刊名	PHYSICAL REVIEW MATERIALS
	2020
卷号	4 期号:10
关键词	ELECTRON-GAS PEROVSKITE SUPERCONDUCTIVITY COEXISTENCE TRANSPORT TITANATE
DOI	10.1103/PhysRevMaterials.4.104008
英文摘要	Apart from a handful of exceptions, all known complex oxide two-dimensional electron gases (2DEGs) are formed in SrTiO3-based heterostructures, and microscopic information about non-SrTiO3 2DEGs systems is scarce. Here, we report on the realization of metallic conductance in a CaTiO3-based system, CaTiO3/LaTiO3 superlattices, epitaxially grown in a layer-by-layer way on a NdGaO3(110) substrate by pulsed laser deposition. The high quality of the crystal and electronic structures is characterized by in situ reflection high-energy electron diffraction, x-ray diffraction, scanning transmission electron microscopy, and x-ray photoemission spectroscopy. Electrical transport confirms the formation of metallic interfaces in the CaTiO3/LaTiO3 superlattice. In addition, Hall measurements reveal that in the CaTiO3/LaTiO3 superlattice the room-temperature carrier mobility is nearly three times higher than that of the CaTiO3/YTiO3 superlattice, implying the importance of TiO6 octahedral tilts and rotations on the carrier mobility of a 2DEG. Since doped CaTiO3 is an A-site polar metal, our results provide a materials system for designing synthetic two-dimensional polar metals.
学科主题	Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20399]
专题	2020专题
作者单位	1.Cao, YW (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Cao, YW (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Xiao, Shaozhu,Wen, Fangdi,Liu, Xiaoran,et al. Metallic interfaces in a CaTiO3/LaTiO3 superlattice[J]. PHYSICAL REVIEW MATERIALS,2020,4(10).
APA	Xiao, Shaozhu.,Wen, Fangdi.,Liu, Xiaoran.,Kareev, M..,Zhang, Ruyi.,...&Chakhalian, J..(2020).Metallic interfaces in a CaTiO3/LaTiO3 superlattice.PHYSICAL REVIEW MATERIALS,4(10).
MLA	Xiao, Shaozhu,et al."Metallic interfaces in a CaTiO3/LaTiO3 superlattice".PHYSICAL REVIEW MATERIALS 4.10(2020).