CaltechAUTHORS
  A Caltech Library Service

Demonstration of large peak-to-valley current ratios in InAs/AlGaSb/InAs single-barrier heterostructures

Söderström, J. R. and Chow, D. H. and McGill, T. C. (1989) Demonstration of large peak-to-valley current ratios in InAs/AlGaSb/InAs single-barrier heterostructures. Applied Physics Letters, 55 (13). pp. 1348-1350. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:SODapl89b

[img]
Preview
PDF
See Usage Policy.

563Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:SODapl89b

Abstract

We report large peak-to-valley current ratios in InAs/AlxGa1−xSb/InAs single-barrier tunnel structures. The mechanism for single-barrier negative differential resistance (NDR) has been proposed and demonstrated recently. A peak-to-valley current ratio of 3.4 (1.2) at 77 K (295 K), which is substantially larger than what has been previously reported, was observed in a 200-Å-thick Al0.42Ga0.58Sb barrier. A comparison with a calculated current-voltage curve yields good agreement in terms of peak current and the slope of the NDR region. The single-barrier structure is a candidate for high-speed devices because of expected short tunneling times and a wide NDR region.


Item Type:Article
Additional Information:Copyright © 1989 American Institute of Physics. Received 24 April 1989; accepted 19 July 1989. We acknowledge the support of the of the Air Force Office of Scientific Research under grant No. 86-0306. Two of us (JRS and DHC) are thankful for financial support from the Sweden-America Foundation and TRW, respectively.
Subject Keywords:TUNNEL EFFECT, HETEROSTRUCTURES, ELECTRICAL PROPERTIES, INDIUM ARSENIDES, ALUMINIUM ANTIMONIDES, GALLIUM ANTIMONIDES, SEMICONDUCTOR DEVICES, IV CHARACTERISTICS
Record Number:CaltechAUTHORS:SODapl89b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:SODapl89b
Alternative URL:http://dx.doi.org/10.1063/1.101595
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10190
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:16 Apr 2008
Last Modified:26 Dec 2012 09:57

Repository Staff Only: item control page