Magnetic properties of 1D spin systems with compositional disorder of three-spin structural units

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Victor V. Slavin ◽  
Vladyslav O. Cheranovskii
Keyword(s):  
Magnetic Properties ◽  
Ground State ◽  
Quantum Monte Carlo ◽  
Random Distribution ◽  
Singlet Ground State ◽  
Structural Units ◽  
Heisenberg Spin ◽  
System A ◽  
Compositional Disorder ◽  
State Spin

Abstract The exact diagonalization (ED) approach and Quantum Monte-Carlo (QMC) method were used for the study of the lowest energy states and low-temperature magnetic properties of some disordered 1D Heisenberg spin-1/2 systems formed by two types of three-spin structural units. For the system with a singlet ground state and the random distribution of structural units along the chain system, a significant decrease of the size of the intermediate magnetization plateau in comparison to the corresponding uniform spin system was found. For the “polyallyl” spin chain with a macroscopic value of the ground state spin, a transition to the singlet ground state due to the effect of compositional disorder was observed.

The Spectroscopy of 198O11 and the 187N11 Ground State

1983 ◽  
Vol 36 (6) ◽  
pp. 825
Author(s):  
Raymond K Sheline
Keyword(s):  
Ground State ◽  
Sudden Change ◽  
Binding Energies ◽  
Ground State Spin ◽  
System A ◽  
State Spin

The spectroscopies of 190 and 21 Ne (both eleven-neutron systems) are compared. The 1-+ [211 iJ, t+ [220il and t- [lOttl bands are observed in both nuclei. On the basis of these similarities 190 is assumed to be a prolate rotor like 21 Ne. If then the recently studied IBN ground state is also considered to be a deformed system (a one-proton hole in the 190 nucleus), both the 1- ground state spin and the sudden change in the systematics of the two-neutron binding energies can be understood.

Magnetic properties of model non-carbon nanotubes with macroscopic value of ground state spin

2011 ◽  
Vol 323 (12) ◽  
pp. 1636-1642 ◽  
Author(s):  
Vladyslav O. Cheranovskii ◽  
Elena V. Ezerskaya ◽  
Douglas J. Klein ◽  
Aleksei A. Kravchenko
Keyword(s):  
Carbon Nanotubes ◽  
Magnetic Properties ◽  
Ground State ◽  
Ground State Spin ◽  
State Spin

scholarly journals Ground State, Magnetization Process and Bipartite Quantum Entanglement of a Spin-1/2 Ising–Heisenberg Model on Planar Lattices of Interconnected Trigonal Bipyramids

Entropy ◽  
2021 ◽  
Vol 23 (12) ◽  
pp. 1671
Author(s):  
Lucia Gálisová ◽  
Michał Kaczor
Keyword(s):  
Quantum Entanglement ◽  
Ground State ◽  
Heisenberg Model ◽  
Degrees Of Freedom ◽  
Heisenberg Spin ◽  
Mixed Spin ◽  
Field Independent ◽  
Spin Arrangement ◽  
State Spin ◽  
Planar Lattices

The ground state, magnetization scenario and the local bipartite quantum entanglement of a mixed spin-1/2 Ising–Heisenberg model in a magnetic field on planar lattices formed by identical corner-sharing bipyramidal plaquettes is examined by combining the exact analytical concept of generalized decoration-iteration mapping transformations with Monte Carlo simulations utilizing the Metropolis algorithm. The ground-state phase diagram of the model involves six different phases, namely, the standard ferrimagnetic phase, fully saturated phase, two unique quantum ferrimagnetic phases, and two macroscopically degenerate quantum ferrimagnetic phases with two chiral degrees of freedom of the Heisenberg triangular clusters. The diversity of ground-state spin arrangement is manifested themselves in seven different magnetization scenarios with one, two or three fractional plateaus whose values are determined by the number of corner-sharing plaquettes. The low-temperature values of the concurrence demonstrate that the bipartite quantum entanglement of the Heisenberg spins in quantum ferrimagnetic phases is field independent, but twice as strong if the Heisenberg spin arrangement is unique as it is two-fold degenerate.

ChemInform Abstract: Synthesis and Magnetic Properties of Ba2Mn2Si2O9: The First Example of S = 2 Spin Dimer with Spin-Singlet Ground State.

ChemInform ◽  
2009 ◽  
Vol 40 (50) ◽  
Author(s):  
Zhangzhen He ◽  
Myung-Hwan Wangbo ◽  
Yutaka Ueda ◽  
Yasuo Narumi ◽  
Koichi Kindo ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ground State ◽  
Singlet Ground State ◽  
Spin Dimer ◽  
Spin Singlet

STUDY ON REGULAR DILUTIONS OF $S=\frac{1}{2}$ IMPURITY IN S=1 CHAINS BY QUANTUM MONTE CARLO SIMULATIONS

2003 ◽  
Vol 17 (31n32) ◽  
pp. 5951-5959 ◽  
Author(s):  
HUAWEN WANG ◽  
ZHAOXIN XU ◽  
HEPING YING ◽  
JUN ZHANG
Keyword(s):  
Monte Carlo ◽  
Magnetic Properties ◽  
Monte Carlo Simulations ◽  
Ground State ◽  
Quantum Monte Carlo ◽  
Cluster Algorithm ◽  
Unit Cell ◽  
Quantum Monte Carlo Simulations

We investigate the variant regularly diluted situations of [Formula: see text] in S=1 isotropic antiferromagnetic chains by the quantum Monte Carlo loop cluster algorithm. Our results manifest significant different magnetic properties in the ground state with respect to the odd (even) host S=1 spins in one unit cell with an impurity S=1/2, and the doped system gradually transits to the pure Haldane chain in two different tendencies with the decreasing of the impurity concentrations.

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