Thermodynamic evidence of the ferroelectric Berry phase in europium-based ferrobismuthite Eu2Bi2Fe4O12
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2021.161114
Abstract: Abstract The possible low temperature biferroic feature of Eu2Bi2Fe4O12 complex perovskites was recently reported. The aim of this work is to present a theoretical study of the structural, magnetic, electronic and ferroelectric properties of this… read more here.
Keywords: evidence ferroelectric; thermodynamic evidence; berry phase; phase ... See more keywords
Flexible generation of vector beams based on the noncommutation of Pancharatnam–Berry phase elements
Sign Up to like & getrecommendations! Published in 2019 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.03.043
Abstract: Abstract We examine the noncommutation of Pancharatnam–Berry phase elements in the generation of vector beams. Any desirable vector beams on the two high-order Poincare spheres can be generated by incorporating the noncommutation and certain input… read more here.
Keywords: vector beams; berry phase; pancharatnam berry; noncommutation ... See more keywords
Nonlinear Pancharatnam−Berry Phase Metasurfaces beyond the Dipole Approximation
Sign Up to like & getrecommendations! Published in 2019 at "ACS Photonics"
DOI: 10.1021/acsphotonics.9b00877
Abstract: Nanoscale optical antennas mediate frequency mixing processes via their optical modes. Within arrays, metasurfaces provide unique opportunities to control nonlinear processes. Macroscopic interpret... read more here.
Keywords: berry phase; pancharatnam berry; metasurfaces beyond; phase metasurfaces ... See more keywords
Berry phase theory of planar Hall effect in topological insulators
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-33258-5
Abstract: The appearance of negative longitudinal magnetoresistance (LMR) in topological semimetals such as Weyl and Dirac semimetals is understood as an effect of chiral anomaly, whereas such an anomaly is not well-defined in topological insulators. Nevertheless,… read more here.
Keywords: hall effect; topological insulators; effect; berry phase ... See more keywords
A method for simultaneously measuring polarization and phase of arbitrarily polarized beams based on Pancharatnam-Berry phase
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4982650
Abstract: Based on the theory of the Pancharatnam-Berry phase, we propose a method for simultaneously measuring polarization and the phase of arbitrarily polarized beams by utilizing digital holography. This method requires merely a single-exposure imaging of… read more here.
Keywords: phase; method simultaneously; polarization; berry phase ... See more keywords
Algebraic approach and Berry phase of a Hamiltonian with a general SU(1, 1) symmetry
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Mathematical Physics"
DOI: 10.1063/5.0027957
Abstract: In this paper we study a general Hamiltonian with a linear structure given in terms of two different realizations of the $SU(1,1)$ group. We diagonalize this Hamiltonian by using the similarity transformations of the $SU(1,1)$… read more here.
Keywords: phase hamiltonian; algebraic approach; hamiltonian general; berry phase ... See more keywords
Creation of topological vortices using Pancharatnam-Berry phase liquid crystal holographic plates
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ab7805
Abstract: Recently, physical fields with topological configurations are evoking increasing attention due to their fascinating structures both in fundamental researches and practical applications. Therein, topological light fields, because of their unique opportunity of combining experimental and… read more here.
Keywords: phase; crystal holographic; liquid crystal; vortices using ... See more keywords
Giant magnetic field from moiré induced Berry phase in homobilayer semiconductors
Sign Up to like & getrecommendations! Published in 2019 at "National Science Review"
DOI: 10.1093/nsr/nwz117
Abstract: When quasiparticles move in condensed matters, the texture of their internal quantum structure as a function of position and momentum can give rise to Berry phases that have profound effects on the material’s properties. Seminal… read more here.
Keywords: magnetic field; phase; berry phase; moir ... See more keywords
Direct spectroscopic observation of Berry-phase interference in the Ni4 single-molecule magnet
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.224428
Abstract: Berry phase effects in spin systems lead to the suppression of tunneling effects when different tunneling paths interfere destructively. Such effects have been seen in several single-molecule magnets (SMMs) through measurements of magnetization dynamics, where… read more here.
Keywords: single molecule; phase interference; berry phase;
Spin motive force by the momentum-space Berry phase in magnetic Weyl semimetals
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.107.195202
Abstract: We show that the magnetic precession of ferromagnetic moments in a noncentrosymmetric magnetic Weyl semimetal induces an electric current through a mechanism analogous to the adiabatic charge pumping. The current is a consequence of a… read more here.
Keywords: momentum space; motive force; weyl; spin motive ... See more keywords
Nonlinear Dirac Cones
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.121406
Abstract: Physics arising from two-dimensional~(2D) Dirac cones has been a topic of great theoretical and experimental interest to studies of gapless topological phases and to simulations of relativistic systems. Such $2$D Dirac cones are often characterized… read more here.
Keywords: dirac cones; phase; nonlinear dirac; berry phase ... See more keywords