TY - JOUR
T1 - Diabolical points in magnetic molecules
T2 - An exactly solvable model
AU - Keçecioğlu, Ersin
AU - Garg, Anupam
PY - 2001/1/23
Y1 - 2001/1/23
N2 - The magnetic molecule Fe8 has a rich pattern of degeneracies in its magnetic spectrum as the static magnetic field applied to it is varied. The points of degeneracy, or diabolical points in the magnetic field space, are found exactly in the simplest model Hamiltonian for this molecule. They are shown to form a perfect centered rectangular lattice, and to be multiply diabolical in general. The multiplicity is found. An earlier semiclassical solution to this problem is thereby shown to be exact in leading order in 1/J where J is the spin.
AB - The magnetic molecule Fe8 has a rich pattern of degeneracies in its magnetic spectrum as the static magnetic field applied to it is varied. The points of degeneracy, or diabolical points in the magnetic field space, are found exactly in the simplest model Hamiltonian for this molecule. They are shown to form a perfect centered rectangular lattice, and to be multiply diabolical in general. The multiplicity is found. An earlier semiclassical solution to this problem is thereby shown to be exact in leading order in 1/J where J is the spin.
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U2 - 10.1103/PhysRevB.63.064422
DO - 10.1103/PhysRevB.63.064422
M3 - Article
AN - SCOPUS:4243843874
SN - 1098-0121
VL - 63
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 6
ER -