Journal ArticleDOI
Isostructural metal-insulator transition in VO2
Daesu Lee,Bongwook Chung,Yin Shi,Gi-Yeop Kim,Neil Campbell,Fei Xue,Kyung Song,Si-Young Choi,J. P. Podkaminer,Tae Heon Kim,Philip Ryan,Philip Ryan,Jong-Woo Kim,Tula R. Paudel,Jong-Hoon Kang,J. W. Spinuzzi,Dmitri A. Tenne,Evgeny Y. Tsymbal,Mark Rzchowski,Long Qing Chen,Jaichan Lee,Chang-Beom Eom +21 more
TLDR
An isostructural, purely electronically driven metal-insulator transition is demonstrated in epitaxial heterostructures of an archetypal correlated material, vanadium dioxide, to provide insights into phase transitions of correlated materials and may aid the design of device functionalities.Abstract:
The metal-insulator transition in correlated materials is usually coupled to a symmetry-lowering structural phase transition. This coupling not only complicates the understanding of the basic mechanism of this phenomenon but also limits the speed and endurance of prospective electronic devices. We demonstrate an isostructural, purely electronically driven metal-insulator transition in epitaxial heterostructures of an archetypal correlated material, vanadium dioxide. A combination of thin-film synthesis, structural and electrical characterizations, and theoretical modeling reveals that an interface interaction suppresses the electronic correlations without changing the crystal structure in this otherwise correlated insulator. This interaction stabilizes a nonequilibrium metallic phase and leads to an isostructural metal-insulator transition. This discovery will provide insights into phase transitions of correlated materials and may aid the design of device functionalities.read more
Citations
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First-principles calculations of electronic structure and spectra of strongly correlated systems: the LDA+U method
TL;DR: In this paper, a generalization of the Local Density Approximation (LDA) method for the systems with strong Coulomb correlations is presented which gives a correct description of the Mott insulators.
Journal ArticleDOI
A comprehensive review on emerging artificial neuromorphic devices
TL;DR: A comprehensive review on emerging artificial neuromorphic devices and their applications is offered, showing that anion/cation migration-based memristive devices, phase change, and spintronic synapses have been quite mature and possess excellent stability as a memory device, yet they still suffer from challenges in weight updating linearity and symmetry.
Journal ArticleDOI
Matter manipulation with extreme terahertz light : Progress in the enabling THz technology
Peter Salén,Martina Basini,Stefano Bonetti,Stefano Bonetti,János Hebling,Mikhail Krasilnikov,Alexey Y. Nikitin,Alexey Y. Nikitin,Georgii Shamuilov,Zoltán Tibai,Vitali Zhaunerchyk,Vitaliy Goryashko +11 more
TL;DR: Terahertz (THz) light has proven to be a fine tool to probe and control quasi-particles and collective excitations in solids, to drive phase transitions and associated changes in material properties as mentioned in this paper.
Journal ArticleDOI
Challenges and Opportunities toward Real Application of VO2-Based Smart Glazing
TL;DR: There are several novel but necessary challenges of VO2-based smart glazing for real-world applications, including color modulation, multistate modulation, skin-comfort design, flexible fabrication, improved stability, and environmental friendliness.
Journal ArticleDOI
Defects in complex oxide thin films for electronics and energy applications: challenges and opportunities
TL;DR: In this paper, the authors provide an overview on recent progress in tuning the functional properties of complex transition-metal oxides via defect engineering, including types of defects and their effects on local atomic structure, electron configurations and electronic structure.
References
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Journal ArticleDOI
Projector augmented-wave method
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Journal ArticleDOI
From ultrasoft pseudopotentials to the projector augmented-wave method
Georg Kresse,Daniel P. Joubert +1 more
TL;DR: In this paper, the formal relationship between US Vanderbilt-type pseudopotentials and Blochl's projector augmented wave (PAW) method is derived and the Hamilton operator, the forces, and the stress tensor are derived for this modified PAW functional.
Journal ArticleDOI
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
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Journal ArticleDOI
Self-interaction correction to density-functional approximations for many-electron systems
John P. Perdew,Alex Zunger +1 more
TL;DR: In this paper, the self-interaction correction (SIC) of any density functional for the ground-state energy is discussed. But the exact density functional is strictly selfinteraction-free (i.e., orbitals demonstrably do not selfinteract), but many approximations to it, including the local spin-density (LSD) approximation for exchange and correlation, are not.