Topological properties of the edge states scattered by a simply connected point contact
| Autor: | V. Marigliano Ramaglia, G. P. Zucchelli, Franco Ventriglia |
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| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Journal de Physique I. 4:1743-1754 |
| ISSN: | 1286-4862 1155-4304 |
| DOI: | 10.1051/jp1:1994218 |
| Popis: | The ~inguJanties of the pha~e of an edge ;taie scattered by a barrier interrupting a w ire ii a pei~pendicular magnetic field are di«ussed. The tran;mis,ion properiies Dl such a ~tructure are expres~ed in terms of creation and annihilation of vortex~antivoriex pairs that give n,e to o,cillation; in the tran~mi,Sion coefficient. Vortice, are trapped under the borner causing o,cillations in the tran,mi,,ion that are related to ihe re;i~tance o,cillation; mea,ured in quantum point contact;, who,e penod depend, linearly on the m;ignetic field. We propo,e a iheory of these oscillation, which differs from other explanation~ ba,ed on the Aharonov-Bohm ei'fect. An e~periment is propo~ed in which o,cillations in ihe tran,mis;ion are monitored by the barrier voltage gate. |
| Databáze: | OpenAIRE |
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