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Topological defects and Goldstone excitations in domain walls between ferromagnetic quantum Hall effect liquids by Fal'ko, Vladimir I.; Iordanskii, S. V. is a scholarly article available to read on EtoBox.

What is Topological defects and Goldstone excitations in domain walls between ferromagnetic quantum Hall effect liquids about?

It is shown that the low-energy spectrum of a ferromagnetic quantum Hall effect liquid in a system with a multi-domain structure generated by an inhomogeneous bare Zeeman splitting $\epsilon_{Z}$ is formed by excitations localized at the walls between domains. For a step-like $\epsilon_Z(r)$, the domain wall spectrum includes a spin-wave with a linear dispersion and a small gap due to spin-orbit coupling, and a low-energy topological defects. The latter are charged and may dominate in the transport under conditions that the percolation through the network of domain walls is provided.

Author

Fal'ko, Vladimir I.; Iordanskii, S. V.

Published

1999

Language

EN