Lorke, A. and Wimmer, S. and Jager, B. and Kotthaus, J.P. and Wegscheider, Werner and Bichler, Max (1998) Far-infrared and transport properties of antidot arrays with broken symmetry. Physica B 249-25, pp. 312-316.
Download (369kB) - Repository staff only
We investigate the high- and low-frequency magnetotransport of a square antidot lattice with a triangular basis. In the longitudinal magnetoresistance ρxx(B) we observe higher-order commensurability features which reflect skipping orbits along the straight edges of the antidots. A magnetic field asymmetry in the four-probe resistance along the y-direction allows us to test basic symmetry relations in the transport coefficients. Under far-infrared irradiation the broken symmetry of the antidot array leads to a lateral photo-voltage which is attributed to a lateral, ratchet-type mechanism.
|Date:||17 June 1998|
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||Antidot arrays; Commensurability effects; Broken symmetry|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||09 Nov 2009 13:10|
|Last Modified:||20 Jul 2011 22:06|