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Title: Structure and Electronic Properties of Interface-Confined Oxide Nanostructures

Abstract

The controlled fabrication of nanostructures has often made use of a substrate template to mediate and control the growth kinetics. Electronic substrate-mediated interactions have been demonstrated to guide the assembly of organic molecules or the nucleation of metal atoms but usually at cryogenic temperatures, where the diffusion has been limited. Combining STM, STS, and DFT studies, we report that the strong electronic interaction between transition metals and oxides could indeed govern the growth of low-dimensional oxide nanostructures. As a demonstration, a series of FeO triangles, which are of the same structure and electronic properties but with different sizes (side length >3 nm), are synthesized on Pt(111). The strong interfacial interaction confines the growth of FeO nanostructures, leading to a discrete size distribution and a uniform step structure. Given the same interfacial configuration, as-grown FeO nanostructures not only expose identical edge/surface structure but also exhibit the same electronic properties, as manifested by the local density of states and local work functions. We expect the interfacial confinement effect can be generally applied to control the growth of oxide nanostructures on transition metal surfaces. These oxide nanostructures of the same structure and electronic properties are excellent models for studies of nanoscale effects andmore » applications.« less

Authors:
 [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1];  [1];  [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Chinese Academy of Sciences, Beijing (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1425069
Report Number(s):
BNL-203209-2018-JAAM
Journal ID: ISSN 1936-0851
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 11; Journal Issue: 11; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY

Citation Formats

Liu, Yun, Ning, Yanxiao, Yu, Liang, Zhou, Zhiwen, Liu, Qingfei, Zhang, Yi, Chen, Hao, Xiao, Jianping, Liu, Ping, Yang, Fan, and Bao, Xinhe. Structure and Electronic Properties of Interface-Confined Oxide Nanostructures. United States: N. p., 2017. Web. doi:10.1021/acsnano.7b06164.
Liu, Yun, Ning, Yanxiao, Yu, Liang, Zhou, Zhiwen, Liu, Qingfei, Zhang, Yi, Chen, Hao, Xiao, Jianping, Liu, Ping, Yang, Fan, & Bao, Xinhe. Structure and Electronic Properties of Interface-Confined Oxide Nanostructures. United States. doi:10.1021/acsnano.7b06164.
Liu, Yun, Ning, Yanxiao, Yu, Liang, Zhou, Zhiwen, Liu, Qingfei, Zhang, Yi, Chen, Hao, Xiao, Jianping, Liu, Ping, Yang, Fan, and Bao, Xinhe. Sat . "Structure and Electronic Properties of Interface-Confined Oxide Nanostructures". United States. doi:10.1021/acsnano.7b06164. https://www.osti.gov/servlets/purl/1425069.
@article{osti_1425069,
title = {Structure and Electronic Properties of Interface-Confined Oxide Nanostructures},
author = {Liu, Yun and Ning, Yanxiao and Yu, Liang and Zhou, Zhiwen and Liu, Qingfei and Zhang, Yi and Chen, Hao and Xiao, Jianping and Liu, Ping and Yang, Fan and Bao, Xinhe},
abstractNote = {The controlled fabrication of nanostructures has often made use of a substrate template to mediate and control the growth kinetics. Electronic substrate-mediated interactions have been demonstrated to guide the assembly of organic molecules or the nucleation of metal atoms but usually at cryogenic temperatures, where the diffusion has been limited. Combining STM, STS, and DFT studies, we report that the strong electronic interaction between transition metals and oxides could indeed govern the growth of low-dimensional oxide nanostructures. As a demonstration, a series of FeO triangles, which are of the same structure and electronic properties but with different sizes (side length >3 nm), are synthesized on Pt(111). The strong interfacial interaction confines the growth of FeO nanostructures, leading to a discrete size distribution and a uniform step structure. Given the same interfacial configuration, as-grown FeO nanostructures not only expose identical edge/surface structure but also exhibit the same electronic properties, as manifested by the local density of states and local work functions. We expect the interfacial confinement effect can be generally applied to control the growth of oxide nanostructures on transition metal surfaces. These oxide nanostructures of the same structure and electronic properties are excellent models for studies of nanoscale effects and applications.},
doi = {10.1021/acsnano.7b06164},
journal = {ACS Nano},
number = 11,
volume = 11,
place = {United States},
year = {2017},
month = {9}
}

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