Fractional edge reconstruction in integer quantum Hall phases
| Autor: | Udit Khanna, Moshe Goldstein, Yuval Gefen |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Strongly Correlated Electrons (cond-mat.str-el) Condensed Matter - Mesoscale and Nanoscale Physics Mode (statistics) FOS: Physical sciences 02 engineering and technology Landau quantization State (functional analysis) Edge (geometry) Quantum Hall effect 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter - Strongly Correlated Electrons Integer Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences State of matter 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 103 |
| ISSN: | 2469-9969 2469-9950 |
| Popis: | Protected edge modes are the cornerstone of topological states of matter. The simplest example is provided by the integer quantum Hall state at Landau level filling unity, which should feature a single chiral mode carrying electronic excitations. In the presence of a smooth confining potential it was hitherto believed that this picture may only be partially modified by the appearance of additional counterpropagating integer-charge modes. Here, we demonstrate the breakdown of this paradigm: The system favors the formation of edge modes supporting fractional excitations. This accounts for previous observations, and leads to additional predictions amenable to experimental tests. 6 pages, 4 figures and Supplementary Material. v2 -- Updated References. v3 -- Published Version |
| Databáze: | OpenAIRE |
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