Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.227201
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Funding
- NSF [DMR-0747587, DMR-0804408, CHE-0714488]
- University of Florida High-Performance Computing Center
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [804408, 0747587] Funding Source: National Science Foundation
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A Mn(4) single-molecule magnet displays asymmetric Berry-phase interference patterns in the transverse-field (H(T)) dependence of the magnetization tunneling probability when a longitudinal field (H(L)) is present, contrary to symmetric patterns observed for H(L) = 0. Reversal of H(L) results in a reflection of the transverse-field asymmetry about H(T) = 0, as expected on the basis of the time-reversal invariance of the spin-orbit Hamiltonian which is responsible for the tunneling oscillations. A fascinating motion of Berry-phase minima within the transverse-field magnitude-direction phase space results from a competition between noncollinear magnetoanisotropy tensors at the two distinct Mn sites.
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