Abstract

The quantum ferromagnetic transition of itinerant electrons is considered. It is shown that the Landau-Ginzburg-Wilson theory described by Hertz and others breaks down due to a singular coupling between fluctuations of the conserved order parameter. This coupling induces an effective long-range interaction between the spins of the form 1/r2d-1. It leads to unusual scaling behavior at the quantum critical point in 1 < d ≤ 3 dimensions, which is determined exactly.

Department(s)

Physics

International Standard Serial Number (ISSN)

0295-5075

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1996 Institute of Physics - IOP Publishing, All rights reserved.

Included in

Physics Commons

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