Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-08-04
J. Magn. Magn. Mater. 310, 1062 (2007)
Physics
Condensed Matter
Strongly Correlated Electrons
2 pages, 2 figures, International Conference on Magnetism 2006 in Kyoto
Scientific paper
10.1016/j.jmmm.2006.10.256
In [B. Binz, A. Vishwanath and V. Aji, Phys. Rev. Lett. 96, 207202 (2006)], a magnetic structure that breaks time reversal symmetry in the absence of net magnetization was proposed as an explanation for the high pressure "partially ordered" state of MnSi. Here we make explicit the anomalous magneto-transport properties of such a state: a magnetoresistivity which is linear and a Hall conductance which is quadratic in the applied magnetic field. Field cooling procedures for obtaining single domain samples are discussed. The anomalous effects are elaborated in the case of three geometries chosen to produce experimentally unambiguous signals of this unusual magnetic state; e.g., it is predicted that a field in z-direction induces an anisotropy in the x-y plane. Another geometry leads to a Hall voltage parallel to the magnetic field.
Binz Benedikt
Vishwanath Ashvin
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