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Chemical trends of stability and band alignment of lattice-matched II-VI/III-V semiconductor interfaces
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Surface energetics of alkaline-earth metal oxides: Trends in stability and adsorption of small molecules
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Improved description of metal oxide stability: Beyond the random phase approximation with renormalized kernels
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Magnetic field stabilized electron-hole liquid in indirect-band-gap A l x G a 1 - x As
An electron-hole liquid (EHL), a condensed liquidlike phase of free electrons and holes in a semiconductor, presents a unique system for exploring quantum many-body phenomena. And while the behavior of EHLs is generally understood, less attention has been devoted to systematically varying the onset of their formation and resulting properties. Here, we report on an experimental approach to tune the conditions of formation and characteristics using a combination of low excitation densities and high magnetic fields up to 90 T. Demonstration of this approach was carried out in indirect-band-gap A l 0.387 G a 0.613 As . EHL droplets can be nucleated from one of two multiexciton complex states depending on the applied excitation density. Furthermore, the excitation density influences the carrier density of the EHL at high magnetic fields, where filling of successive Landau levels can be controlled. The ability to manipulate the formation pathway, temperature, and carrier density of the EHL phase under otherwise fixed experimental conditions makes our approach a powerful tool for studying condensed carrier phases in further detail.
Stability of the M2 phase of vanadium dioxide induced by coherent epitaxial strain
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Impact of lattice dynamics on the phase stability of metamagnetic FeRh: Bulk and thin films
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Stability limits and transformation pathways of α -quartz under high pressure
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Optimized interatomic potential for silicon and its application to thermal stability of silicene
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Recoverable information and emergent conservation laws in fracton stabilizer codes
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Stability of the Nagaoka-type ferromagnetic state in a t 2 g orbital system on a cubic lattice
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Phase stability and interlayer interaction of blue phosphorene
In this work, we study the interlayer interactions between sheets of blue phosphorus with quantum Monte Carlo (QMC) methods. Here, we find that as previously observed in black phosphorus, interlayer binding of blue phosphorus cannot be described by van der Waals (vdW) interactions alone within the density functional theory framework. Specifically, while some vdW density functionals produced reasonable binding curves, none of them could provide a correct, even qualitatively, description of charge redistribution due to interlayer binding. We also show that small systematic errors in common practice QMC calculations, such as the choice of optimized geometry and finite-size corrections, are non-negligible given the energy and length scales of this problem. We mitigate some of the major sources of error and report QMC-optimized lattice constant, stacking, and interlayer binding energy for blue phosphorus. Finally, it is strongly suggested that these considerations are important and quite general in the modeling of two-dimensional phosphorus allotropes.