Results 51 to 60 of about 3,825,090 (194)

Phase-Field Crystal Method for Bilayer Graphene

open access: yesNanomaterials
Bilayer graphene has been a subject of intense study in recent years. Its most common structure is AB (Bernal) stacking, where one layer is shifted relative to the other, leading to distinct electronic behaviors compared to the less stable AA stacking or
Heting Qiao, Kai Liu
doaj   +1 more source

Phase-Field Simulation of Spinodal Decomposition in Mn-Cu Alloys

open access: yesMetals, 2022
The spinodal decomposition was studied in the aged Mn-40 at. %Cu, Mn-30 at. %Cu, Mn-20 at. %Cu alloys using a phase-field model based on the Cahn–Hillard equation, considering a subregular solution model and the energy contribution of the magnetic ...
Darío A. Sigala-García   +4 more
doaj   +1 more source

Magnon BEC and various phases of 3D quantum helimagnets under high magnetic field [PDF]

open access: yes, 2009
We study high-field phase diagram and low-energy excitations of three-dimensional quantum helimagnets. Slightly below the saturation field, the emergence of magnetic order may be viewed as Bose-Einstein condensation (BEC) of magnons. The method of dilute
Totsuka, K., Ueda, H. T.
core   +1 more source

Quantum fluctuation induced ordered phase in the Blume-Capel model

open access: yes, 2004
We consider the Blume-Capel model with the quantum tunneling between the excited states. We find a magnetically ordered phase transition induced by quantum fluctuation in a model.
Blume R.   +6 more
core   +2 more sources

Study on Dynamic Behavior of Disperse Phase Water Droplets in Non-uniform Electric Field

open access: yesShiyou jixie, 2018
To study the dynamic behavior and influencing factors of disperse phase water droplets in a non-uniform electric field formed by tubular electrodes, a physical model of water droplets in a non-uniform electric field is established using phase-field ...
Yin Yongming   +3 more
doaj  

Monopoles in CP(N-1) model via the state-operator correspondence

open access: yes, 2008
One of the earliest proposed phase transitions beyond the Landau-Ginzburg-Wilson paradigm is the quantum critical point separating an antiferromagnet and a valence-bond-solid on a square lattice.
J. Polchinski   +5 more
core   +1 more source

Numerical Simulation of Polarization and Deformation of Droplet under Pulsed Electric Field

open access: yesShiyou jixie, 2019
To deeply explore the electric dehydration mechanism under pulsed electric field, a two-dimensional model of the polarization and deformation of water-in-oil emulsion droplet under pulsed electric field is established based on COMSOL technology and using
Sun Zhiqian   +5 more
doaj  

Phase diagrams of the 2D t-t'-U Hubbard model from an extended mean field method

open access: yes, 2004
It is well-known from unrestricted Hartree-Fock computations that the 2D Hubbard model does not have homogeneous mean field states in significant regions of parameter space away from half filling. This is incompatible with standard mean field theory.
A. Singh   +31 more
core   +1 more source

Cell Dynamics Simulation of Kolmogorov-Johnson-Mehl-Avrami Kinetics of Phase Transformation

open access: yes, 2005
In this study, we use the cell dynamics method to test the validity of the Kormogorov-Johnson-Mehl-Avrami (KJMA) theory of phase transformation. This cell dynamics method is similar to the well-known phase-field model, but it is a more simple and ...
Iwamatsu, Masao, Nakamura, Masato
core   +1 more source

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