Browse:

The university is member of the Confederation of Open Access Repositories (COAR)

More information about Open Acces at open-acces.net

Magnetotransport properties of arrays of crosshaped antidots

Haan, S. and Lorke, S. and Hennig, Ralf and Suhrke, Michael and Wegscheider, Werner and Bichler, Max (1999) Magnetotransport properties of arrays of crosshaped antidots. Physical Review B 60 (12), pp. 8845-8848.

PDF - Repository staff only - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
87Kb

Other URL: http://link.aps.org/abstract/PRB/v60/p8845

Abstract

In magnetotransport measurements on arrays of cross-shaped antidots, we observe pronounced features in both the longitudinal and transverse magnetoresistivities $\rho$$_{xx}$ and $\rho$$_{xy}$ , which cannot be understood within the simple framework of commensurability between cyclotron radius and superlattice period. These resonances can be regarded as magnetotransport fingerprints of the complex unit cell. With the help of detailed numerical calculations using classical linear response theory we can ascribe additional maxima in $\rho$$_{xx}$ to closed orbits in the dotlike potential between four antidots. A pronounced minimum in $\rho$$_{xy}$ demonstrates the significance of open trajectories.