Dephasing rates for weak localization and universal conductance fluctuations in two dimensional Si: P and Ge: P δ-layers
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-170934
- We report quantum transport measurements on two dimensional (2D) Si:P and Ge:P δ-layers and compare the inelastic scattering rates relevant for weak localization (WL) and universal conductance fluctuations (UCF) for devices of various doping densities (0.3–2.5 × 10\(^{18}\)m\(^{−2}\)) at low temperatures (0.3–4.2 K). The phase breaking rate extracted experimentally from measurements of WL correction to conductivity and UCF agree well with each other within the entire temperature range. This establishes that WL and UCF, being the outcome ofWe report quantum transport measurements on two dimensional (2D) Si:P and Ge:P δ-layers and compare the inelastic scattering rates relevant for weak localization (WL) and universal conductance fluctuations (UCF) for devices of various doping densities (0.3–2.5 × 10\(^{18}\)m\(^{−2}\)) at low temperatures (0.3–4.2 K). The phase breaking rate extracted experimentally from measurements of WL correction to conductivity and UCF agree well with each other within the entire temperature range. This establishes that WL and UCF, being the outcome of quantum interference phenomena, are governed by the same dephasing rate.…
| Autor(en): | Saquib Shamim, S. Mahapatra, G. Scappucci, W. M. Klesse, M. Y. Simmons, Arindam Ghosh |
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| URN: | urn:nbn:de:bvb:20-opus-170934 |
| Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
| Institute der Universität: | Fakultät für Physik und Astronomie / Physikalisches Institut |
| Sprache der Veröffentlichung: | Englisch |
| Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | Scientific Reports |
| Erscheinungsjahr: | 2017 |
| Band / Jahrgang: | 7 |
| Heft / Ausgabe: | 46670 |
| Originalveröffentlichung / Quelle: | Scientific Reports 2017, 7:46670. DOI: 10.1038/srep46670 |
| DOI: | https://doi.org/10.1038/srep46670 |
| PubMed-ID: | https://pubmed.ncbi.nlm.nih.gov/28470166 |
| Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Freie Schlagwort(e): | electronic properties and materials; quantum information; two-dimensional materials |
| Datum der Freischaltung: | 14.10.2019 |
| Lizenz (Deutsch): |  CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |