Abstract
We have measured the four terminal magnetoresistance of a multichannel electron waveguide, i.e. a submicron wire fabricated in extremely high mobility GaAs/AlGaAs heterostructure. Only a few transverse, one dimensional subbands or channels carry the current in this submicron wire because the width is comparable to an electron wavelength. We observe that the average resistance increases when the current path bends through a junction at or beyond the voltage terminals, and attribute the increase to a change (due to the bend) in the relative transmittance of the few transverse channels which carry the current. Our observations reveal that in these devices the average resistance is predominately associated with scattering from the leads used for the measurement.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Sean Washburn and Richard A. Webb, Advan. Phys. 35, 375 (1986).
G. Timp, A. M. Chang, P. Manldewich, R. Behringer, J. E. Cunningham, T. Y. Chang and R. E. Howard, Phys. Rev. Lett. 59, 732 (1987).
W. J. Skocpol, P. M. Mankiewich, R. E. Howard, L D. Jacket, D. M. Tennant and A. D. Stone, Phys. Rev. Lett. 58, 2347 (1987).
A. Benoit, C. P. Umbach, R. B. Laibowitz and R. A. Webb, Phys. Rev. Lett. 58, 2343 (1987).
A.D. Benoit, S. Washburn, C.P. Umbach, R.B. Laibowitz, and RA Webb, Phys. Rev. Lett. 57, 1765 (1986).
G. Timp, H. U. Baranger, P. deVegvar, J. E. Cunningham, R. E. Howard, R. Behringer, and P. M. Mankewich, to appear in Phys. Rev. Lett.
M. Buttiker, Phys. Rev. Lett. 57, Localization, Interaction, and Transport Phenomena, edited by G. Bergmann and Y. Bruynseraede, Springer-Verlag, Heidelberg, New York (1985) p. 38–50.
P. M. Mankiewich, R. E. Behringer, R. E. Howard, A. M. Chang, T. Y. Chang, B. Chelluri, J. E. Cunningham, G. Timp, J. Vac. Sci. Tech. B 6, 131 (1988).
J.E. Cunningham, W.T. Tsang, G. Timp, E.F. Schubert, A.M. Chang and K Owusu-Sekyere, Phys. Rev. BI 37, 4317 (1988).
G. Timp, A.M. Chang, J.E. Cunningham, P.M. Mankiewich, R. Behringer, T.Y. Chang, R.E. Howard, Phys. Rev. Lett: 58, 2814 (1987).
M.L Roukes, A. Scherer, S.J. Allen Jr., H.G. Craighead, R.M. Ruthen, E.D. Beebe, and J.P. Harbison, Phys. Rev Lett. 59, 3011 (1987).
G. Timp, A. M. Chang, P. deVegvar, R. E. Howard, R. E. Behringer, J. E. Cunningham and P. M. Mankiewich, Surf. Sci. 196, 68 (1988).
A.D. Stone, Phys. Rev. Lett. 54, (1985) 2692.
P.A. Lee and D.S. Fisher, Phys. Rev. Lett. 47, 882 (1981).
H.U. Baranger, A.D. Stone, and D.P. DiVincenzo, to be appear in Phys. Rev. B.
A. Szafer and A. D. Stone, to appear in IBM J. Res. Devlop.
H.U. Baranger, unpublished.
S. DasSarma and F. Stern, Phys. Rev. B 32, 8442 (1985).
F. F. Fang, T. P. Smith and S. L Wright, Surf. Sci. 196, 1988 (1988).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1988 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Timp, G. et al. (1988). Four Terminal Resistance of a Multichannel Electron Waveguide. In: Heinrich, H., Bauer, G., Kuchar, F. (eds) Physics and Technology of Submicron Structures. Springer Series in Solid-State Sciences, vol 83. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-83431-8_12
Download citation
DOI: https://doi.org/10.1007/978-3-642-83431-8_12
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-83433-2
Online ISBN: 978-3-642-83431-8
eBook Packages: Springer Book Archive