Magnetic properties of undoped C60.

@article{Coffey1992MagneticPO,
  title={Magnetic properties of undoped C60.},
  author={Coffey and Trugman},
  journal={Physical review letters},
  year={1992},
  volume={69 1},
  pages={
          176-179
        }
}
  • Coffey, Trugman
  • Published 26 June 1992
  • Physics, Medicine
  • Physical review letters
The Heisenberg antiferromagnet, which arises from the large-{ital U} Hubbard model, is investigated on the C{sub 60} molecule and other fullerenes. The connectivity of C{sub 60} leads to an exotic classical ground state with nontrivial topology. We argue that there is no phase transition in the Hubbard model as a function of {ital U}/{ital t}, and thus the large-{ital U} solution is relevant for the physical case of intermediate coupling. The system undergoes a first-order metamagnetic phase… 
Unconventional magnetic properties of the icosahedral symmetry antiferromagnetic Heisenberg model
The antiferromagnetic Heisenberg model on icosahedral symmetry Ih fullerene clusters exhibits unconventional magnetic properties despite the lack of anisotropic interactions. At the classical level,
Antiferromagnetic Heisenberg model on clusters with icosahedral symmetry
The nearest-neighbor antiferromagnetic Heisenberg model is considered for spins ${s}_{i}=\frac{1}{2}$ and 1 located on the vertices of the dodecahedron and the icosahedron, which belong to the point
The antiferromagnetic $S=1/2$ Heisenberg model on the C$_{60}$ fullerene geometry
We solve the quantum-mechanical antiferromagnetic Heisenberg model with spins positioned on vertices of the truncated icosahedron using the density-matrix renormalization group (DMRG). This describes
Whirling spin order in the quasicrystal approximant Au72Al14Tb14
Neutron powder diffraction experiment has been performed on the quasicrystal approximant Au$_{72}$Al$_{14}$Tb$_{14}$, a body-center-cubic crystal of icosahedral spin clusters. The long-range
Enhanced magnetocaloric effect in frustrated magnetic molecules with icosahedral symmetry
We investigate the magnetocaloric properties of certain antiferromagnetic spin systems that have already been or very likely can be synthesized as magnetic molecules. It turns out that the special
Magnetic properties of C-60-TDAE and TTFxC60Bry
The magnetic properties of C-60-TDAE and TTFxC60Bry may be described by the multi-band extended Hubbard model and the local configuration interaction method comparing the energy of the spin singlet
s = 1 2 antiferromagnetic Heisenberg model on fullerene-type symmetry clusters
The ${s}_{i}=\frac{1}{2}$ nearest-neighbor antiferromagnetic Heisenberg model is considered for spins sitting on the vertices of clusters with the connectivity of fullerene molecules and a number of
Fulleride superconductivity compared and contrasted with RVB theory of high Tc cuprates
Recently we proposed a microscopic mechanism for alkali-metal doped Fulleride superconductivity. The aim of the current study is to compare and contrast such Fulleride superconductivity with that of
An analysis of the magnetic ground state in molecules
We analyse the antiferromagnetic ground state of various fullerenes, namely cluster isomers, in the classical limit of the effective Heisenberg Hamiltonian. The valley structures of the frustrated
Antiferromagnetic Heisenberg model on the icosahedron: influence of connectivity and the transition from the classical to the quantum limit.
  • N. Konstantinidis
  • Physics, Medicine
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2015
TLDR
The importance of the connectivity of the icosahedron for the appearance of a magnetization discontinuity as a function of an external field which separates two families of lowest energy configurations is examined and the transition from the classical to the quantum limit is investigated.
...
1
2
3
4
5
...

References

SHOWING 1-6 OF 6 REFERENCES
Phys. Rev. B
  • Phys. Rev. B
  • 1992
J. Phys. Chem
  • J. Phys. Chem
  • 1991
Nature J. Phys. Chem
  • Nature J. Phys. Chem
  • 1991
Rev. Mod. Phys
  • Rev. Mod. Phys
  • 1991
Phys. Rev. B Phys. Rev. B
  • Phys. Rev. B Phys. Rev. B
  • 1988
Nature Phys. Rev. B
  • Nature Phys. Rev. B
  • 1987