Results 111 to 120 of about 55,351 (274)
ABSTRACT A halogenated symmetrical formamidine, N,N′‐bis(3‐chloro‐4‐fluorophenyl)formamidine (FCF) was synthesized by the condensation reaction between triethyl orthoformate and 3‐chloro‐4‐fluoroaniline in 1:2 ratio. The compound FCF was characterized by FT‐IR, mass, NMR (1H and 13C) spectroscopic techniques and the purity was confirmed by elemental ...
Segun D. Oladipo+6 more
wiley +1 more source
We study quantum quenches in the transverse-field Ising model defined on different lattice geometries such as chains, two- and three-leg ladders, and two-dimensional square lattices.
Jonas Richter, Tjark Heitmann, Robin Steinigeweg
doaj +1 more source
Nonadaptive fault-tolerant verification of quantum supremacy with noise [PDF]
Quantum samplers are believed capable of sampling efficiently from distributions that are classically hard to sample from. We consider a sampler inspired by the classical Ising model. It is nonadaptive and therefore experimentally amenable.
Theodoros Kapourniotis, Animesh Datta
doaj +1 more source
Test of Universality in Anisotropic 3D Ising Model
Chen and Dohm predicted theoretically in 2004 that the widely believed universality principle is violated in the Ising model on the simple cubic lattice with more than only six nearest neighbours.
A.H. El-Astal+13 more
core +1 more source
Frustrations on Decorated Square Lattice in Ising Model
In this paper, we performed the comprehensive studies of frustration properties in the Ising model on a decorated square lattice in the framework of an exact analytical approach based on the Kramers--Wannier transfer matrix method. The assigned challenge consisted in finding rigorous formulas for residual entropies of all possible frustrations without ...
Kassan-Ogly, F. A., Zarubin, A. V.
openaire +2 more sources
Tricritical Properties of Antiferromagnetic Ising Model on the Square Lattice
The Ising square lattice model with nearest-neighbor (nn) interactions ($J_1$) is one of the few exactly solvable models [1]. Adding next-neareast- neighbor (nnn) interactions ($J_2$) or a magnetic field (or both) leads to the non solvability of the model and only some approximate solutions are possible. In this brief report we will review some results
Bobák, A.+3 more
openaire +2 more sources
The Nature and Stability of Transition Metal‐Anchored Nitrogen‐Doped Graphene Single‐Atom Catalysts
Our quantum chemical analyses of the bonding trends between period 4 transition metals and nitrogen‐doped graphene support reveal that the metal–support interaction strengthens from Ti to Ni, then weakens from Ni to Zn. This trend arises from changes in bonding interaction between the transition metals’ 3dxy orbital and nitrogen lone pairs of the ...
Angelina N. van Dam, Pascal Vermeeren
wiley +1 more source
Using the 2D Jordan-Wigner transformation we reformulate the square-lattice s=1/2 XY (XZ) model in terms of noninteracting spinless fermions and examine the ground-state and thermodynamic properties of this spin system.
Affleck+42 more
core +1 more source
This work explores data acquisition and reduction protocols for atomic pair distribution scheme that enhances high‐angle data collection, and the effects of instrumental parameters on resulting pair distribution functions are examined. A correction for sample absorption in PDFgetX3 is introduced. Herein, data acquisition protocols are explored and data
Till Schertenleib+5 more
wiley +1 more source
We investigate the stability tendency of a magnetic skyrmion crystal in noncentrosymmetric tetragonal systems with the Dzyaloshinskii–Moriya interaction.
Satoru Hayami
doaj +1 more source