Dephasing rates for weak localization and universal conductance fluctuations in two dimensional Si: P and Ge: P δ-layers
Please always quote using this 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.…
| Author: | 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 |
| Document Type: | Journal article |
| Faculties: | Fakultät für Physik und Astronomie / Physikalisches Institut |
| Language: | English |
| Parent Title (English): | Scientific Reports |
| Year of Completion: | 2017 |
| Volume: | 7 |
| Issue: | 46670 |
| Source: | 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 |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Tag: | electronic properties and materials; quantum information; two-dimensional materials |
| Release Date: | 2019/10/14 |
| Licence (German): |  CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |