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The delicate interplay of electronic charge, spin, and orbital degrees of freedom is in the heart of many novel phenomena across the transition metal oxide family. Here, by combining high- resolution angle resolved photoemission…

We present a comprehensive first-principles study of the electronic structure of 51 semiconducting monolayer transition metal dichalcogenides and -oxides in the 2H and 1T hexagonal phases. The quasiparticle (QP) band structures with…

材料科学 · 物理学 2015-06-10 Filip Anselm Rasmussen , Kristian Sommer Thygesen

This paper summarises the theory and functionality behind Questaal, an open-source suite of codes for calculating the electronic structure and related properties of materials from first principles. The formalism of the linearised muffin-tin…

Electronic band structure for electrons bound on periodic minimal surfaces is differential-geometrically formulated and numerically calculated. We focus on minimal surfaces because they are not only mathematically elegant (with the surface…

材料科学 · 物理学 2009-11-07 H. Aoki , M. Koshino , D. Takeda , H. Morise

Ab initio wavefunction based methods are applied to the study of electron correlation effects on the band structure of oxide systems. We choose MgO as a prototype closed-shell ionic oxide. Our analysis is based on a local Hamiltonian…

材料科学 · 物理学 2007-08-13 L. Hozoi , U. Birkenheuer , P. Fulde , A. Mitrushchenkov , H. Stoll

Silicon spintronics requires injection of spin-polarized carriers into Si. An emerging approach is direct electrical injection from a ferromagnetic semiconductor - EuO being the prime choice. Functionality of the EuO/Si spin contact is…

BiVO3F is a promising material used in solar energy conversion systems. Here, we first report the calculated structural, electronic, and surface reaction properties using PBE and hybrid density functionals. We found it is a direct band gap…

材料科学 · 物理学 2021-06-25 Taifeng Liu* , Tongling Liu , Yongqiang Zheng

We present an analysis of the electronic structure of perovskite-related iridates, 5d electron compounds where a subtle interplay between spin-orbit coupling, tetragonal distortions and electron correlations determines the electronic…

强关联电子 · 物理学 2015-11-12 J. L. Lado , V. Pardo

We compute the spin-Hall conductance in a multiband model describing the two-dimensional electron gas formed at a LaAlO3/SrTiO3 interface in the presence of a finite concentration of impurities. Combining linear response theory with a…

介观与纳米尺度物理 · 物理学 2023-08-21 Domenico Giuliano , Andrea Nava , Carmine Antonio Perroni , Manuel Bibes , Felix Trier , Marco Salluzzo

A new scheme of first-principles computation for strongly correlated electron systems is proposed. This scheme starts from the local-density approximation (LDA) at high-energy band structure, while the low-energy effective Hamiltonian is…

材料科学 · 物理学 2007-05-23 Yoshiki Imai , Igor V. Solovyev , Masatoshi Imada

A full-zone 30-band $k$$\cdot$$p$ model is developed as an efficient and reliable tool to compute electronic band structure in Ge$_{1-x}$Sn$_{x}$ alloy. The model was first used to reproduce the electronic band structures in Ge and…

应用物理 · 物理学 2019-11-07 Zhigang Song , Weijun Fan , Chuanseng Tan , Qijie Wang , Donguk Nam , Daohua Zhang , Greg Sun

We report the calculated fundamental band gaps of \emph{wurtzite} ternary alloys Zn$_{1-x}$M$_x$O (M=Mg, Cd) and the band offsets of the ZnO/Zn$_{1-x}$M$_x$O heterojunctions, these II-VI materials are important for electronics and…

材料科学 · 物理学 2017-01-26 Haitao Yin , Junli Chen , Yin Wang , Jian Wang , Hong Guo

We present an efficient scheme for accurate electronic structure interpolations based on the systematically improvable optimized atomic orbitals. The atomic orbitals are generated by minimizing the spillage value between the atomic basis…

材料科学 · 物理学 2015-05-20 Mohan Chen , G-C Guo , Lixin He

Nowadays it has become feasible to perform angle-resolved photoemission spectroscopy (ARPES) measurements of transition-metal oxides with three-dimensional perovskite structures owing to the availability of high-quality single crystals of…

强关联电子 · 物理学 2007-05-23 H. Wadati , T. Yoshida , A. Chikamatsu , H. Kumigashira , M. Oshima , H. Eisaki , Z. -X. Shen , T. Mizokawa , A. Fujimori

In this article, the electronic band structure $\beta-(Al_xGa_{1-x})_2O_3$ alloy system is calculated with $\beta-Ga_2O_3$ as the bulk crystal. The technique of band unfolding is implemented to obtain the effective bandstructure…

材料科学 · 物理学 2022-07-18 Ankit Sharma , Uttam Singisetti

Understanding the interatomic bonding and electronic properties of two-dimensional (2D) materials is crucial for preparing high-performance 2D semiconductor materials. We have calculated the band structure, electronic properties, and…

材料科学 · 物理学 2025-01-14 Yu Wang , Yunhu Zhu , Yixin Li , Maolin Bo

We compute the electronic band structure and optical properties of boron arsenide using the relativistic quasiparticle self-consistent $GW$ approach, including electron-hole interactions through solution of the Bethe-Salpeter equation. We…

材料科学 · 物理学 2019-06-07 John Buckeridge , David O. Scanlon

Twistronics has received much attention as a new method to manipulate the properties of 2D van der Waals structures by introducing moir\'e patterns through a relative rotation between two layers. Here we begin a theoretical exploration of…

Rapid design and development of the emergent ultra-wide bandgap semiconductors Ga$_2$O$_3$ and Al$_2$O$_3$ requires a compact model of their electronic structures, accurate over the broad energy range accessed in future high-field,…

介观与纳米尺度物理 · 物理学 2022-11-01 Yifan , Zhang , Mengren , Liu , Guru Khalsa , Debdeep Jena

A remarkable consequence of the Hohenberg-Kohn theorem of density functional theory is the existence of an injective map between the electronic density and any observable of the many electron problem in an external potential. In this work,…

无序系统与神经网络 · 物理学 2021-08-16 Javier Robledo Moreno , Johannes Flick , Antoine Georges