Abstract
We show that a PbTe-type narrow-gap semiconductor with an antiphase boundary (or domain wall) has currents of abnormal parity and induced fractional charges. A model is introduced which reduces the problem to the physics of a Dirac equation with a soliton in background electric and magnetic fields. We show that this system is a physical realization of the parity anomaly.
Original language | English (US) |
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Pages (from-to) | 2967-2970 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 57 |
Issue number | 23 |
DOIs | |
State | Published - 1986 |
ASJC Scopus subject areas
- General Physics and Astronomy