Quantum Limitations in Microdevices.
Abstract
Recent advances in microprocess fabrication continue to reduce operational dimensions. Primary goals in the design of such devices seek to obtain maximum operational frequency and minimum switching time. Sadler and Eastman have recently reported a switching time of 15.4 ps. Yamasaki et al. have reported on operational frequency of 60 GHz and further suggest that frequencies in excess of 100 GHz may be attained. The primary circuit element of these devices is a metal-semiconductor field-effect transistor. In such field-effect transistors charge carriers are driven through a GaAs semiconductor from source to drain by an applied electric field. Modulation of the current is achieved by varying the voltage to the gate. In this analysis we consider the degree to which the laws of quantum mechanics impose limitations on operational properties of such microdevices. The energy-time uncertainty relation employed in the operation of microdevices was discussed previously by Keyes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1986
- Accession Number
- ADA175474
Entities
People
- Brian K. Jones
- Richard L. Liboff
Organizations
- Cornell University