Research output: Contribution to Journal/Magazine › Journal article › peer-review
<mark>Journal publication date</mark> | 11/01/1999 |
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<mark>Journal</mark> | Physical review letters |
Issue number | 2 |
Volume | 82 |
Number of pages | 4 |
Pages (from-to) | 402-405 |
Publication Status | Published |
<mark>Original language</mark> | English |
It is shown that the low-energy spectrum of a ferromagnetic quantum Hall liquid in a system with a multidomain structure generated by an inhomogeneous bare Zeeman splitting epsilon(z) is formed by excitations localized at the walls between domains. For a steplike 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 low-energy topological defects. The latter are charged and may dominate the transport under conditions that allow percolation through the network of domain walls.