Revealing quantum effects in highly conductive δ-layer systems
Abstract
Abstract Thin, high-density layers of dopants in semiconductors, known as δ -layer systems, have recently attracted attention as a platform for exploration of the future quantum and classical computing when patterned in plane with atomic precision. However, there are many aspects of the conductive properties of these systems that are still unknown. Here we present an open-system quantum transport treatment to investigate the local density of electron states and the conductive properties of the δ -layer systems. A successful application of this treatment to phosphorous δ -layer in silicon both explains the origin of recently-observed shallow sub-bands and reproduces the sheet resistance values measured by different experimental groups. Further analysis reveals two main quantum-mechanical effects: 1) the existence of spatially distinct layers of free electrons with different average energies; 2) significant dependence of sheet resistance on the δ -layer thickness for a fixed sheet charge density.
- Publication Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1819780
- Alternate Identifier(s):
- OSTI ID: 1828022
- Report Number(s):
- SAND-2021-8311J
Journal ID: ISSN 2399-3650; 205; PII: 705
- Grant/Contract Number:
- NA0003525; 213017
- Resource Type:
- Published Article
- Journal Name:
- Communications Physics
- Additional Journal Information:
- Journal Name: Communications Physics Journal Volume: 4 Journal Issue: 1; Journal ID: ISSN 2399-3650
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Mamaluy, Denis, Mendez, Juan P., Gao, Xujiao, and Misra, Shashank. Revealing quantum effects in highly conductive δ-layer systems. United Kingdom: N. p., 2021.
Web. doi:10.1038/s42005-021-00705-1.
Mamaluy, Denis, Mendez, Juan P., Gao, Xujiao, & Misra, Shashank. Revealing quantum effects in highly conductive δ-layer systems. United Kingdom. https://doi.org/10.1038/s42005-021-00705-1
Mamaluy, Denis, Mendez, Juan P., Gao, Xujiao, and Misra, Shashank. Mon .
"Revealing quantum effects in highly conductive δ-layer systems". United Kingdom. https://doi.org/10.1038/s42005-021-00705-1.
@article{osti_1819780,
title = {Revealing quantum effects in highly conductive δ-layer systems},
author = {Mamaluy, Denis and Mendez, Juan P. and Gao, Xujiao and Misra, Shashank},
abstractNote = {Abstract Thin, high-density layers of dopants in semiconductors, known as δ -layer systems, have recently attracted attention as a platform for exploration of the future quantum and classical computing when patterned in plane with atomic precision. However, there are many aspects of the conductive properties of these systems that are still unknown. Here we present an open-system quantum transport treatment to investigate the local density of electron states and the conductive properties of the δ -layer systems. A successful application of this treatment to phosphorous δ -layer in silicon both explains the origin of recently-observed shallow sub-bands and reproduces the sheet resistance values measured by different experimental groups. Further analysis reveals two main quantum-mechanical effects: 1) the existence of spatially distinct layers of free electrons with different average energies; 2) significant dependence of sheet resistance on the δ -layer thickness for a fixed sheet charge density.},
doi = {10.1038/s42005-021-00705-1},
journal = {Communications Physics},
number = 1,
volume = 4,
place = {United Kingdom},
year = {Mon Sep 13 00:00:00 EDT 2021},
month = {Mon Sep 13 00:00:00 EDT 2021}
}
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