A Monte Carlo study of surface diffusion coefficients in the presence of adsorbate–adsorbate interactions. IV. Attractive nearest‐neighbor and repulsive next‐nearest‐neighbor interactions

1991 ◽  
Vol 95 (10) ◽  
pp. 7648-7652 ◽  
Author(s):  
C. Uebing ◽  
R. Gomer
Keyword(s):  
Monte Carlo ◽  
Surface Diffusion ◽  
Diffusion Coefficients ◽  
Nearest Neighbor ◽  
Monte Carlo Study

A Monte Carlo study of surface diffusion of ions on a growing NaCl type crystal

1991 ◽  
Vol 257 (1-3) ◽  
pp. L665-L669 ◽  
Author(s):  
Vincent K.W. Cheng ◽  
C.S. Yeung
Keyword(s):  
Monte Carlo ◽  
Surface Diffusion ◽  
Monte Carlo Study ◽  
Type Crystal

Effect of a STM tip on the surface-diffusion measurement: A Monte Carlo study

1998 ◽  
Vol 57 (12) ◽  
pp. 7275-7280 ◽  
Author(s):  
Xiaosha Wang ◽  
Qiming Li ◽  
Michael C. Tringides
Keyword(s):  
Monte Carlo ◽  
Surface Diffusion ◽  
Monte Carlo Study ◽  
Diffusion Measurement

scholarly journals 3D ISING NONUNIVERSALITY: A MONTE CARLO STUDY

2005 ◽  
Vol 16 (08) ◽  
pp. 1217-1224 ◽  
Author(s):  
MELANIE SCHULTE ◽  
CAROLINE DROPE
Keyword(s):  
Monte Carlo ◽  
Ising Model ◽  
External Field ◽  
Nearest Neighbor ◽  
Monte Carlo Study ◽  
Universality Class ◽  
Cubic Lattice ◽  
Simple Cubic ◽  
Simple Cubic Lattice ◽  
Binder Cumulant

We investigate as a member of the Ising universality class the Next-Nearest Neighbor Ising model without external field on a simple cubic lattice by using the Monte Carlo Metropolis Algorithm. The Binder cumulant and the susceptibility ratio, which should be universal quantities at the critical point, were shown to vary for small negative next-nearest neighbor interactions.

QUANTUM MONTE CARLO STUDY OF MAGNETIC CORRELATION IN GRAPHENE NANORIBBONS AND QUANTUM DOTS

2013 ◽  
Vol 27 (21) ◽  
pp. 1330016
Author(s):  
PAN GAO ◽  
SUHANG LIU ◽  
LIN TIAN ◽  
TIANXING MA
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Nearest Neighbor ◽  
Graphene Nanoribbons ◽  
Monte Carlo Study ◽  
Electron Interaction ◽  
Magnetic Correlation ◽  
Antiferromagnetic Correlation ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene

To realize the application of spintronics, possible magnetism in graphene-based material is an important issue to be addressed. At the tight banding level of armchair graphene nanoribbons, there are two flat bands in the band structure, two Van Hove singularities in the density of states, and the introducing of the next-nearest-neighbor hopping term cause high asymmetry in them, which plays a key role in the behavior of magnetic correlation. We further our studies within determinant quantum Monte Carlo simulation to treat the electron–electron interaction. It is found that the armchair graphene nanoribbons show carrier mediated magnetic correlation. In the armchair graphene nanoribbons, the antiferromagnetic correlation dominates around half filling, while the ferromagnetic correlation dominates as electron filling is lower than 0.8. Moreover, the ferromagnetic correlation is strengthened markedly as the next-nearest-neighbor hopping energy increases. The resultant manipulation of ferromagnetism in graphene-based material may facilitate the development of spintronics.

Monte Carlo Study on the Statistical Properties of Ising Polymer Chain

2003 ◽  
Vol 17 (22n24) ◽  
pp. 4267-4271 ◽  
Author(s):  
Meng-Bo Luo
Keyword(s):  
Monte Carlo ◽  
Polymer Chain ◽  
Nearest Neighbor ◽  
Spatial Configuration ◽  
Spontaneous Magnetization ◽  
Monte Carlo Study ◽  
Spin Interaction ◽  
Chain Model ◽  
Dynamic Monte Carlo ◽  
Experimental Findings

The configurational and magnetic properties of magnetic polymers are investigated based on an Ising polymer chain model with nearest-neighbor spin-spin interaction on the simple cubic lattice. Dynamic Monte Carlo simulation shows that the model has spontaneous magnetization at low temperature, i.e. the mean-square magnetization <M2> approaches to 1 below the critical temperature Tc. Near Tc, a transition of chain spatial configuration from extended coil to compacted globule is found. A nonlinear magnetization - field curve is observed, in agreement with experimental findings for magnetic polymers.

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