The effects of a common approximation used in the polarizability calculations of electron-electron subband screening in quantum well devices

Christopher S. Baird; Marissa D. Lafferty; Philip C. Slingerland

doi:10.1117/12.2323523

11 September 2018 The effects of a common approximation used in the polarizability calculations of electron-electron subband screening in quantum well devices

Christopher S. Baird, Marissa D. Lafferty, Philip C. Slingerland

Author Affiliations +

Proceedings Volume 10725, Low-Dimensional Materials and Devices 2018; 107250E (2018) https://doi.org/10.1117/12.2323523
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Quantum well devices can be investigated through the use of computational predictions of the electron-electron subband scattering rates. A high-accuracy prediction requires the calculation of the quantum well electron polarizability. An approximation is sometimes made that renders the integral in the polarizability equation analytically solvable. This study comprehensively quantifies the error and the limitations introduced through the use of this approximation. The approximate polarizability equation is found to introduce significant error for certain scenarios. Furthermore, the approximate polarizability equation is found to fail to give any numeric answer at all for relatively high temperatures and low electron densities.

Conference Presentation

Citation Download Citation

Christopher S. Baird, Marissa D. Lafferty, and Philip C. Slingerland "The effects of a common approximation used in the polarizability calculations of electron-electron subband screening in quantum well devices", Proc. SPIE 10725, Low-Dimensional Materials and Devices 2018, 107250E (11 September 2018); https://doi.org/10.1117/12.2323523

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available