Universal conductance fluctuations and phase-coherent transport in a semiconductor Bi2O2Se nanoplate with strong spin-orbit interaction
(2019) In Nanoscale 11(22). p.10622-10628- Abstract
We report on phase-coherent transport studies of a Bi2O2Se nanoplate and on observation of universal conductance fluctuations and spin-orbit interaction induced reduction in fluctuation amplitude in the nanoplate. Thin-layered Bi2O2Se nanoplates are grown by chemical vapor deposition (CVD) and transport measurements are made on a Hall-bar device fabricated from a CVD-grown nanoplate. The measurements show weak antilocalization at low magnetic fields at low temperatures, as a result of spin-orbit interaction, and a crossover toward weak localization with increasing temperature. Temperature dependences of characteristic transport lengths, such as spin relaxation length, phase coherence length,... (More)
We report on phase-coherent transport studies of a Bi2O2Se nanoplate and on observation of universal conductance fluctuations and spin-orbit interaction induced reduction in fluctuation amplitude in the nanoplate. Thin-layered Bi2O2Se nanoplates are grown by chemical vapor deposition (CVD) and transport measurements are made on a Hall-bar device fabricated from a CVD-grown nanoplate. The measurements show weak antilocalization at low magnetic fields at low temperatures, as a result of spin-orbit interaction, and a crossover toward weak localization with increasing temperature. Temperature dependences of characteristic transport lengths, such as spin relaxation length, phase coherence length, and mean free path, are extracted from the low-field measurement data. Universal conductance fluctuations are visible in the low-temperature magnetoconductance over a large range of magnetic fields and the phase coherence length extracted from the autocorrelation function is consistent with the result obtained from the weak localization analysis. More importantly, we find a strong reduction in amplitude of the universal conductance fluctuations and show that the results agree with the analysis assuming strong spin-orbit interaction in the Bi2O2Se nanoplate.
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- author
- Meng, Mengmeng ; Huang, Shaoyun ; Tan, Congwei ; Wu, Jinxiong ; Li, Xiaobo ; Peng, Hailin and Xu, H. Q. LU
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nanoscale
- volume
- 11
- issue
- 22
- pages
- 7 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85067081073
- pmid:31139797
- ISSN
- 2040-3364
- DOI
- 10.1039/c9nr02347j
- language
- English
- LU publication?
- yes
- id
- 1105d7e4-06f0-4c13-97d5-b4b3f7593e99
- date added to LUP
- 2019-06-28 08:55:13
- date last changed
- 2024-04-16 15:03:54
@article{1105d7e4-06f0-4c13-97d5-b4b3f7593e99,
abstract = {{<p>We report on phase-coherent transport studies of a Bi<sub>2</sub>O<sub>2</sub>Se nanoplate and on observation of universal conductance fluctuations and spin-orbit interaction induced reduction in fluctuation amplitude in the nanoplate. Thin-layered Bi<sub>2</sub>O<sub>2</sub>Se nanoplates are grown by chemical vapor deposition (CVD) and transport measurements are made on a Hall-bar device fabricated from a CVD-grown nanoplate. The measurements show weak antilocalization at low magnetic fields at low temperatures, as a result of spin-orbit interaction, and a crossover toward weak localization with increasing temperature. Temperature dependences of characteristic transport lengths, such as spin relaxation length, phase coherence length, and mean free path, are extracted from the low-field measurement data. Universal conductance fluctuations are visible in the low-temperature magnetoconductance over a large range of magnetic fields and the phase coherence length extracted from the autocorrelation function is consistent with the result obtained from the weak localization analysis. More importantly, we find a strong reduction in amplitude of the universal conductance fluctuations and show that the results agree with the analysis assuming strong spin-orbit interaction in the Bi<sub>2</sub>O<sub>2</sub>Se nanoplate.</p>}},
author = {{Meng, Mengmeng and Huang, Shaoyun and Tan, Congwei and Wu, Jinxiong and Li, Xiaobo and Peng, Hailin and Xu, H. Q.}},
issn = {{2040-3364}},
language = {{eng}},
number = {{22}},
pages = {{10622--10628}},
publisher = {{Royal Society of Chemistry}},
series = {{Nanoscale}},
title = {{Universal conductance fluctuations and phase-coherent transport in a semiconductor Bi<sub>2</sub>O<sub>2</sub>Se nanoplate with strong spin-orbit interaction}},
url = {{http://dx.doi.org/10.1039/c9nr02347j}},
doi = {{10.1039/c9nr02347j}},
volume = {{11}},
year = {{2019}},
}