Results 101 to 110 of about 2,678,219 (375)

Constructing a gapless spin-liquid state for the spin-1/2 J(1)-J(2) Heisenberg model on a square lattice. [PDF]

open access: yesPhysical Review Letters, 2013
We construct a class of projected entangled pair states which is exactly the resonating valence bond wave functions endowed with both short range and long range valence bonds.
Ling Wang   +4 more
semanticscholar   +1 more source

Reorientation Transition Between Square and Hexagonal Skyrmion Lattices near the Saturation into the Homogeneous State in Quasi-Two-Dimensional Chiral Magnets

open access: yesNanomaterials
I revisit the well-known phase transition between the hexagonal skyrmion lattice and the homogeneous state within the phenomenological Dzyaloshinskii theory for chiral magnets, which includes only the exchange, Dzyaloshinskii–Moriya, and Zeeman energy ...
Andrey O. Leonov
doaj   +1 more source

Dynamics and hysteresis in square lattice artificial spin ice

open access: yesNew Journal of Physics, 2013
Dynamical effects under geometrical frustration are considered in a model for artificial spin ice on a square lattice in two dimensions. Each island of the spin ice has a three-component Heisenberg-like dipole moment subject to shape anisotropies that ...
G M Wysin   +3 more
doaj   +1 more source

Detection Wavelength Control of Uncooled Infrared Sensors Using Two-Dimensional Lattice Plasmonic Absorbers

open access: yesSensors, 2015
Wavelength-selective uncooled infrared (IR) sensors are highly promising for a wide range of applications, such as fire detection, gas analysis and biomedical analysis.
Yousuke Takagawa   +2 more
doaj   +1 more source

High-energy spin waves in the spin-1 square-lattice antiferromagnet La_{2}NiO_{4}

open access: yesPhysical Review Research, 2023
Inelastic neutron scattering is used to study the magnetic excitations of the S=1 square-lattice antiferromagnet La_{2}NiO_{4}. We find that the spin waves cannot be described by a simple classical (harmonic) Heisenberg model with only nearest-neighbor ...
A. N. Petsch   +7 more
doaj   +1 more source

Design of a Curved Shape Photonic Crystal Taper for Highly Efficient Mode Coupling

open access: yesSensors, 2021
The design and modeling of a curved shape photonic crystal taper consisting of Si rods integrated with a photonic crystal waveguide are presented.
Reyhaneh Jannesari   +5 more
doaj   +1 more source

Exciting a d-density wave in an optical lattice with driven tunneling [PDF]

open access: yes, 2007
Quantum phases with unusual symmetries may play a key role for the understanding of solid state systems at low temperatures. We propose a realistic scenario, well in reach of present experimental techniques, which should permit to produce a stationary ...
A. Hemmerich, C. Morais Smith, R. Grimm
core   +3 more sources

Tensor renormalization group study of classical XY model on the square lattice. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2013
Using the tensor renormalization group method based on the higher-order singular value decomposition, we have studied the thermodynamic properties of the continuous XY model on the square lattice.
Jun Yu   +8 more
semanticscholar   +1 more source

High‐Temperature Oxidation of the CrFeNi Medium‐Entropy Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
The oxidation behavior of equiatomic CrFeNi MEA is a key issue that determines this material's suitability for high‐temperature application. The understanding of long‐term behavior is even more crucial than short‐term corrosion effects. The alloy is exposed to synthetic air at 1000, 1050, and 1100 °C for 24, 100, and 1000 h and systematically compared ...
Anna Maria Manzoni   +5 more
wiley   +1 more source

Topologically protected colloidal transport above a square magnetic lattice

open access: yesNew Journal of Physics, 2016
We theoretically study the motion of magnetic colloidal particles above a magnetic pattern and compare the predictions with Brownian dynamics simulations. The pattern consists of alternating square domains of positive and negative magnetization.
Daniel de las Heras   +3 more
doaj   +1 more source

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