Publications (43)
Origin of local magnetic exchange interaction in infiite-layer nickelates
Yanbing Zhou, Dan Zhao, Boyun Zeng +5
Significant magnetic exchange interactions have been observed in infinite-layer nickelates RNiO2 (R = La, Pr, Nd), which exhibit unconventional superconductivity upon hole doping.…
A First-Principles Study of the Electronic Reconstructions of LaAlO3/SrTiO3 Heterointerfaces and Their Variants
Hanghui Chen, Alexie M. Kolpak, Sohrab Ismail-Beigi
We present a first-principles study of the electronic structures and properties of ideal (atomically sharp) LaAlO3/SrTiO3 (001) heterointerfaces and their variants such as a new cl…
Spin State Disproportionation in Insulating Ferromagnetic LaCoO3 Epitaxial Thin Films
Shanquan Chen, Jhong-Yi Chang, Qinghua Zhang +14
The origin of insulating ferromagnetism in epitaxial LaCoO3 films under tensile strain remains elusive despite extensive research efforts have been devoted. Surprisingly, the spin…
Atomic layer control of metal-insulator behavior in oxide quantum wells integrated directly on silicon
Kamyar Ahmadi-Majlan, Tong-Jie Chen, Zheng Hui Lim +6
We present electrical and structural characterization of epitaxial LaTiO3/SrTiO3 quantum wells integrated directly on Si(100). The quantum wells exhibit metallic transport describe…
Emergent topological states via digital (001) oxide superlattices
Zhiwei Liu, Hongquan Liu, Jiaji Ma +3
Oxide heterostructures exhibit many intriguing properties. Here we provide design principles for inducing multiple topological states in (001) (O)/(O) oxid…
Canonical Formalism for Lagrangians of Maximal Nonlocality
Hanghui Chen, H. Q. Zheng
A canonical formalism for Lagrangians of maximal nonlocality is established. The method is based on the familiar Legendre transformation to a new function which can be derived from…