Dipolar Ordering and Quantum Dynamics of Domain Walls in Mn-12 Acetate

Details Dipolar Ordering and Quantum Dynamics of Domain Walls in Mn-12 Acetate Dipolar Ordering and Quantum Dynamics of Domain Walls in Mn-12 Acetate

2008-05-10

arxiv.org/abs/0805.1433v2

Phys. Rev. B 78, 174425-(11) (2008)

Physics

Condensed Matter

Statistical Mechanics

11 PR pages, 4 figures. This is the extended version

Scientific paper

10.1103/PhysRevB.78.174425

We find that dipolar interactions favor ferromagnetic ordering of elongated crystals of Mn12 Acetate below 0.8 K. Ordered crystals must possess domain walls. Motion of the wall corresponds to a moving front of Landau-Zener transitions between quantum spin levels. Structure and mobility of the wall are computed. The effect is robust with respect to inhomogeneous broadening and decoherence.

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