Imaging the magnetic nanodomains in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>Nd</mml:mtext><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mtext>Fe</mml:mtext><mml:mn>14</mml:mn></mml:msub><mml:mtext>B</mml:mtext></mml:mrow></mml:math>

Huang, Lunan; Taufour, Valentin; Lamichhane, Tej N.; Schrunk, Benjamin; Bud’ko, Sergey L.; Canfield, Paul C.; Kaminski, Adam

doi:10.1103/physrevb.93.094408

Cited by 13 publications

(13 citation statements)

References 18 publications

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“…For example, the mixture between I and Cl at the halide X site in CH 3 NH 3 PbI 3 − x Cl x was studied by Colella et al, [18] the mixture between Pb and Sn at the B site in CH 3 NH 3 SnxPb x−1 I 3 was discussed in the work of Mosconi et al, [22] and the mixture between Rb and Cs at the A site in Rb x Cs 1˘x SnI 3 was examined by Jung et al [23] In the work of Filip et al, [24] the authors used a series of APbI 3 compounds, where A stands for an organic or inorganic cation, to establish a correlation between the metal-halide-metal bond angle and the metalhalide bond length with the variation of bandgap. Similar researches were reported by Buin et al, [25] who studied the variation of bandgap with the variation of halide anions in CH 3 NH 3 PbX 3 compounds, and in the work of Huang et al, [26] where the variation of bandgap with the variation of atoms at the B and X sites in CsBX 3 was reported. The dynamics and dielectric properties, including the effective charges (Z*) and dielectric constant of CsSnX 3 compounds, also studied in this paper were calculated in Ref [27].…”

supporting

confidence: 81%

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX₃ halide perovskite

Sadok

Plugaru

Birsan

et al. 2020

Int J of Quantum Chemistry

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First‐principles calculations within density functional theory were performed on a series of halide perovskite compounds ABX3(A: Cs or Rb; B:Pb or Sn). Their electronic structure, lattice dynamics, and dielectric properties were studied in relationship with the change in atom species at each one of the three inequivalent crystallographic sites, to explain the origin of these properties. Thus, the variation of the bandgap with the overlap between the B cation lone pair and the electronic states of halide atoms, as well as with the distortion of the BX6 octahedra network is discussed. It is shown that the vibrational modes, phonon frequencies, atomic displacements, and the possible ferroelectric instability in these compounds are dependent on masses of atoms, volume of AX12 polyhedron, as well as on streoactivity of Pb lone pair. Also, the Born effective charges, dielectric constant, spontaneous polarization, and infrared spectra are calculated. The relation between these dielectric properties and the ions dynamics is discussed.

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supporting

confidence: 81%

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX₃ halide perovskite

Sadok

Plugaru

Birsan

et al. 2020

Int J of Quantum Chemistry

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“…The study of three-dimensional (3D) topological semimetals in electronic systems such as Dirac [1][2][3][4][5], Weyl [6][7][8], and nodal-line [9][10][11][12][13][14] semimetals has garnered considerable interest in condensed-matter physics. The Dirac and Weyl semimetals feature linear band crossing points at isolated points in momentum space that are topologically protected.…”

mentioning

confidence: 99%

Two-dimensional Dirac nodal loop magnons in collinear antiferromagnets

Owerre

2018

J. Phys.: Condens. Matter

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We study the nontrivial linear magnon band crossings in the collinear antiferromagnets on the two-dimensional (2D) CaVO lattice, also realized in some iron-based superconductors such as AFe Se (A = K, Rb, Cs). It is shown that the combination of space-inversion and time-reversal symmetry ([Formula: see text] symmetry) leads to doubly-degenerate eight magnon branches, which cross each other linearly along a one-dimensional loop in the 2D Brillouin zone. We show that the Dirac nodal loops (DNLs) are not present in the collinear ferromagnet on this lattice. Thus, the current 2D antiferromagnetic DNLs are symmetry-protected and they provide a novel platform to search for their analogs in 2D electronic antiferromagnetic systems.

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“…First, we consider a linear nonmagnetic regime. Figure 2 Fano mode and the inner plasmon approach to each other yielding a narrowband Fano-shape curve [51]. As the shell gets thinner, the mode interaction growths, leading to strong splitting the mode wavelengths.…”

Section: Dynamical Modelmentioning

confidence: 96%

“…Since its 6 nm thick films demonstrate 5 3.8 10 esu m χ − ≈ × [50], the maximal value of gyration which can be reached in practice corresponds to the magnetic field ~ 7.8 kG (or 0.78 T). Note that here, for the sake of clarity, we ignore the metallic nonlocality which potentially may lead to spectral shifting of the Fano resonance peak and enhancement of the nonlinear response [51].…”

Section: Theoretical Modelsmentioning

confidence: 99%

Optical tristability and ultrafast Fano switching in nonlinear magnetoplasmonic nanoparticles

Sun

et al. 2018

Phys. Rev. B

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We consider light scattering by a coated magneto-plasmonic nanoparticle (MPNP) with a Kerr-type nonlinear plasmonic shell and a magneto-optic core. Such structure features two plasmon dipole modes, associated with electronic oscillations on the inner and outer surfaces of the shell. Driven in a nonlinear regime, each mode exhibits a bistable response. Bistability of an inner plasmon leads to switching between this state and a Fano resonance (Fano switching). Once the external light intensity exceeds the critical value, the bistability zones of both eigen modes overlap yielding optical tristability characterized by three stable steady states for a given wavelength and light intensity. We develop a dynamic theory of transitions between nonlinear steady states and estimate the characteristic switching time as short as 0.5 ps. We also show that the magneto-optical (MO) effect allows red-and blue-spectral shift of the Fano profile for right-and left-circular polarizations of the external light, rendering Fano switching sensitive to the light polarization. Specifically, one can reach Fano switching for the right circular polarization while cancelling it for the left circular polarization. Our results point to a novel class of ultrafast Fano switchers tunable by magnetic field for applications in nanophotonics.

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Imaging the magnetic nanodomains inNd2Fe14B

Cited by 13 publications

References 18 publications

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX₃ halide perovskite

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX₃ halide perovskite

Two-dimensional Dirac nodal loop magnons in collinear antiferromagnets

Optical tristability and ultrafast Fano switching in nonlinear magnetoplasmonic nanoparticles

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Imaging the magnetic nanodomains inNd2Fe14B

Cited by 13 publications

References 18 publications

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX3 halide perovskite

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX3 halide perovskite

Two-dimensional Dirac nodal loop magnons in collinear antiferromagnets

Optical tristability and ultrafast Fano switching in nonlinear magnetoplasmonic nanoparticles

Contact Info

Product

Resources

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Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX₃ halide perovskite

Effect of chemical nature of atoms on the electronic, dielectric, and dynamical properties of ABX₃ halide perovskite