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Now showing items 11-20 of 32
Exciton control inaroom temperature bulk semiconductor withcoherent strain pulses
(American Association for the Advancement of Science, 2019-11)
Controlling the excitonic optical properties of room temperature semiconductors using time-dependent perturbations is key to future optoelectronic applications. The optical Stark effect in bulk and low-dimensional materials ...
Validity of perturbative methods to treat the spin-orbit interaction: application to magnetocrystalline anisotropy
(IOP Publishing, 2019-07-29)
A second-order perturbation (2PT) approach to the spin-orbit interaction (SOI) is implemented within a density-functional theory framework. Its performance is examined by applying it to the calculation of the magnetocrystalline ...
Large effect of metal substrate on magnetic anisotropy of Co on hexagonal boron nitride
(IOP Publishing, 2019-07-29)
We combine x-ray absorption spectroscopy (XAS), x-raymagnetic circular dichroism (XMCD) and x-ray magnetic linear dichroism (XMLD) data with first principles density functional theory (DFT) calculations and amultiorbital ...
Light−Matter Response in Nonrelativistic Quantum Electrodynamics
(American Chemical Society, 2019-11)
We derive the full linear-response theory for nonrelativistic quantum electrodynamics in the long wavelength limit and provide a practical framework to solve the resulting equations by using quantum-electrodynamical ...
Possible experimental realization of a basicZ2topological semimetal in GaGeTe
(American Institute of Physics, 2019-12-01)
We report experimental and theoretical evidence that GaGeTe is a basic Z(2) topological semimetal with three types of charge carriers: bulk-originated electrons and holes as well as surface state electrons. This electronic ...
Multiflat Bands and Strong Correlations in Twisted Bilayer BoronNitride: Doping-Induced Correlated Insulator and Superconductor
(American Chemical Society, 2019-08)
Two-dimensional materials, obtained by van der Waals stacking of layers, are fascinating objects of contemporary condensed matter research, exhibiting a variety of new physics. Inspired by the breakthroughs of twisted ...
Synthesis of macrocyclic poly(ethylene oxide)s containing a protected thiol group: a strategy for decorating gold surfaces with ring polymers
(Royal Society of Chemistry, 2019-12-21)
We introduce an approach to synthesize macrocyclic poly(ethylene oxide)s containing a pendant protected thiol group (pSH-CPEO), which is demonstrated to be able to attach to gold surfaces without prior deprotection. Our ...
Using an Ionic Liquid to Reduce the Electrical Percolation Threshold in Biobased Thermoplastic Polyurethane/Graphene Nanocomposites
(MDPI, 2019-03)
Biobased thermoplastic polyurethane (bTPU)/unmodified graphene (GR) nanocomposites (NCs) were obtained by melt-mixing in a lab-scaled conventional twin-screw extruder. Alternatively, GR was also modified with an ionic ...
Two-color XUV plus NIR femtosecond photoionization of neon in the near-threshold region
(IOP Publishing, 2019-06-28)
Results of angle-resolved electron spectroscopy of near-threshold photoionization of Ne atoms by combined femtosecond extreme ultraviolet and near infrared fields are presented. The dressed-electron spectra show an energetic ...
Surface state tunable energy and mass renormalization from homothetic quantum dot arrays
(Royal Society of Chemistry, 2019-12-28)
Quantum dot arrays in the form of molecular nanoporous networks are renowned for modifying the electronic surface properties through quantum confinement. Here we show that, compared to the pristine surface state, the band ...