| DOI | Trouver le DOI : https://doi.org/10.1103/PhysRevB.107.195406 |
|---|
| Auteur | Rechercher : Wang, Z. T.; Rechercher : Hilke, M.Identifiant ORCID : https://orcid.org/0000-0002-2604-9377; Rechercher : Fong, N.Identifiant ORCID : https://orcid.org/0000-0001-5727-2953; Rechercher : Austing, D. G.1; Rechercher : Studenikin, S. A.1Identifiant ORCID : https://orcid.org/0000-0002-7712-7187; Rechercher : West, K. W.; Rechercher : Pfeiffer, L. N. |
|---|
| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
|
|---|
| Bailleur de fonds | Rechercher : Fonds de recherche du Québec – Nature et technologies; Rechercher : Natural Sciences and Engineering Research Council of Canada; Rechercher : Gordon and Betty Moore Foundation; Rechercher : National Science Foundation; Rechercher : Materials Research Science and Engineering Center, University of Nebraska; Rechercher : Princeton University |
|---|
| Format | Texte, Article |
|---|
| Résumé | We report on nonlinear transport phenomena at high filling factor and DC current-induced electronic hydrodynamics in an ultrahigh mobility (μ = 20 × 10⁶ cm²/Vs) two-dimensional electron gas in a narrow ( 15 − μ m wide) GaAs/AlGaAs Hall bar for DC current densities reaching 0.67 A/m. The various phenomena and the boundaries between the phenomena are captured together in a two-dimensional differential resistivity map as a function of magnetic field (up to 250 mT) and DC current. This map, which resembles a phase diagram, demarcate distinct regions dominated by Shubnikov-de Haas (SdH) oscillations (and phase inversion of these oscillations) around zero DC current; negative magnetoresistance and a double-peak feature (both ballistic in origin) around zero field; and Hall field-induced resistance oscillations (HIROs) radiating out from the origin. From a detailed analysis of the data near zero field, we show that increasing the DC current suppresses the electron-electron scattering length that drives a growing hydrodynamic contribution to both the differential longitudinal and transverse (Hall) resistivities. Our approach to induce hydrodynamics with DC current differs from the more usual approach of changing the temperature. We also find a significant (factor of two to four) difference between the quantum lifetime extracted from SdH oscillations, and the quantum lifetime extracted from HIROs. In addition to observing HIRO peaks up to the seventh order, we observe an unexpected HIRO-like feature close to midway between the first-order and the second-order HIRO maxima at high DC current. |
|---|
| Date de publication | 2023-05-05 |
|---|
| Maison d’édition | American Physical Society |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 17be4cba-71f2-4aaf-92fb-29a9f6f4f85c |
|---|
| Enregistrement créé | 2023-08-31 |
|---|
| Enregistrement modifié | 2023-08-31 |
|---|
