Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators
Coulomb interaction has important consequences for the physics of quantum spin Hall edge states, weakening the topological protection via two-particle scattering and renormalizing both the velocity and the charge of collective plasmon modes compared to that of free electrons. Despite these effects,...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2020-12-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.2.043383 |
| _version_ | 1797211114087383040 |
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| author | Alexandre Gourmelon Hiroshi Kamata Jean-Marc Berroir Gwendal Fève Bernard Plaçais Erwann Bocquillon |
| author_facet | Alexandre Gourmelon Hiroshi Kamata Jean-Marc Berroir Gwendal Fève Bernard Plaçais Erwann Bocquillon |
| author_sort | Alexandre Gourmelon |
| collection | DOAJ |
| description | Coulomb interaction has important consequences for the physics of quantum spin Hall edge states, weakening the topological protection via two-particle scattering and renormalizing both the velocity and the charge of collective plasmon modes compared to that of free electrons. Despite these effects, interactions remain difficult to quantify. We propose here simple and robust edge resonator geometries to characterize Coulomb interaction by means of high-frequency measurements. They rely on a transmission line approach and take advantage of the impedance mismatch between the edge states and their microwave environment. |
| first_indexed | 2024-04-24T10:21:20Z |
| format | Article |
| id | doaj.art-23e7ce77b025447b8fffda011b2a66f9 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:21:20Z |
| publishDate | 2020-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-23e7ce77b025447b8fffda011b2a66f92024-04-12T17:05:24ZengAmerican Physical SocietyPhysical Review Research2643-15642020-12-012404338310.1103/PhysRevResearch.2.043383Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonatorsAlexandre GourmelonHiroshi KamataJean-Marc BerroirGwendal FèveBernard PlaçaisErwann BocquillonCoulomb interaction has important consequences for the physics of quantum spin Hall edge states, weakening the topological protection via two-particle scattering and renormalizing both the velocity and the charge of collective plasmon modes compared to that of free electrons. Despite these effects, interactions remain difficult to quantify. We propose here simple and robust edge resonator geometries to characterize Coulomb interaction by means of high-frequency measurements. They rely on a transmission line approach and take advantage of the impedance mismatch between the edge states and their microwave environment.http://doi.org/10.1103/PhysRevResearch.2.043383 |
| spellingShingle | Alexandre Gourmelon Hiroshi Kamata Jean-Marc Berroir Gwendal Fève Bernard Plaçais Erwann Bocquillon Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators Physical Review Research |
| title | Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators |
| title_full | Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators |
| title_fullStr | Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators |
| title_full_unstemmed | Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators |
| title_short | Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators |
| title_sort | characterization of helical luttinger liquids in microwave stepped impedance edge resonators |
| url | http://doi.org/10.1103/PhysRevResearch.2.043383 |
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