Journal article
Extraction of isotropic electron-nuclear hyperfine coupling constants of paramagnetic point defects from near-zero field magnetoresistance spectra via least squares fitting to models developed from the stochastic quantum Liouville equation
Journal of applied physics, Vol.128(12), p.124504
09/28/2020
DOI: 10.1063/5.0019875
Abstract
We report on a method by which we can systematically extract spectroscopic information such as isotropic electron-nuclear hyperfine coupling constants from near-zero field magnetoresistance (NZFMR) spectra. The method utilizes a least squares fitting of models developed from the stochastic quantum Liouville equation. We applied our fitting algorithm to two distinct material systems: Si/SiO2 metal oxide semiconductor field effect transistors and a-Si:H metal insulator semiconductor capacitors. Our fitted results and hyperfine parameters are in reasonable agreement with existing knowledge of the defects present in the systems. Our work indicates that the NZFMR response and fitting of the NZFMR spectrum via models developed from the stochastic quantum Liouville equation could be a relatively simple yet powerful addition to the family of spin-based techniques used to explore the chemical and structural nature of point defects in semiconductor devices and insulators.
Details
- Title: Subtitle
- Extraction of isotropic electron-nuclear hyperfine coupling constants of paramagnetic point defects from near-zero field magnetoresistance spectra via least squares fitting to models developed from the stochastic quantum Liouville equation
- Creators
- Elias B. Frantz - Pennsylvania State UniversityNicholas J. Harmon - University of EvansvilleStephen R. McMillan - University of IowaStephen J. Moxim - Pennsylvania State UniversityMichael E. Flatte - University of IowaPatrick M. Lenahan - Pennsylvania State University
- Resource Type
- Journal article
- Publication Details
- Journal of applied physics, Vol.128(12), p.124504
- Publisher
- Amer Inst Physics
- DOI
- 10.1063/5.0019875
- ISSN
- 0021-8979
- eISSN
- 1089-7550
- Number of pages
- 12
- Grant note
- HDTRA1-18-0012 / Defense Threat Reduction Agency (DTRA); United States Department of Defense; Defense Threat Reduction Agency
- Language
- English
- Date published
- 09/28/2020
- Academic Unit
- Electrical and Computer Engineering; Physics and Astronomy
- Record Identifier
- 9984428809602771
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