High figure of merit spin polarized electron sources grown via MOCVD
Open Access
- 27 November 2023
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 123 (22)
Abstract
Spin polarized photocathodes are key to the future operation of electron accelerators such as the ones at Thomas Jefferson National Accelerator Facility and Brookhaven National Laboratory. Currently, these photocathodes come in short supply due to limited production by molecular beam epitaxy. By developing a process to implement similar structures using metal organic chemical vapor deposition, the availability of these devices can be increased. In this paper, we detail the implementation of recent photocathode advancements via metal organic chemical vapor deposition process and show an improvement in both polarization and quantum efficiency of our devices compared to those fabricated via molecular beam epitaxy, with devices reaching 82% polarization and 2.9% quantum efficiency.Keywords
Funding Information
- U.S. Department of Energy (DE-AC05-06OR23177)
- U.S. Department of Energy (DE-SC0023369)
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