A route to ultrathin quantum gases at polar perovskite heterointerfaces
Type
ArticleKAUST Department
Computational Physics and Materials Science (CPMS)Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2012-09-07Online Publication Date
2012-09-07Print Publication Date
2012-10Permanent link to this record
http://hdl.handle.net/10754/562323
Metadata
Show full item recordAbstract
Oxide interfaces are attracting interest in recent years due to special functionalities of two-dimensional quantum gases. However, with typical thicknesses of at least 10-12 Å the gases still extend considerably in the third dimension, which compromises the size of quantum effects. To overcome this limitation, we propose incorporation of highly electronegative cations, such as Ag. By ab initio calculations, we demonstrate the formation of a mobile two-dimensional hole gas in AgNbO 3/SrTiO 3 that is confined to an ultrathin slab of only 5.6 Å thickness. Electronegative cations therefore are a promising way to enhance the quantum nature of hole gases. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Citation
Nazir, S., & Schwingenschlögl, U. (2012). A route to ultrathin quantum gases at polar perovskite heterointerfaces. Physica Status Solidi (RRL) - Rapid Research Letters, 6(9-10), 373–375. doi:10.1002/pssr.201206354Publisher
Wileyae974a485f413a2113503eed53cd6c53
10.1002/pssr.201206354