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FIZIKA A 8 (1999) 3 , 157-164
 
AMPLITUDE OF AHARONOV-BOHM OSCILLATIONS IN MESOSCOPIC METALLIC RINGS AS
A FUNCTION OF THE DC BIAS VOLTAGE
C. TERRIERa, C. STRUNKa, T. NUSSBAUMERa,
D. BABIĆa,b
and C. SCHÖNENBERGERa
aInstitute of Physics, University of Basel,
Klingelbergstrasse 82, CH-4056 Basel, Switzerland
bDepartment of Physics, Faculty of Science, University of
Zagreb, Bijenička 32, HR-10001 Zagreb, Croatia
Dedicated to Professor Boran Leontić on the occasion of his 70th
birthday
Received 26 November 1999; revised manuscript received 9 February 2000
Accepted 21 February 2000
We report measurements of the amplitude of the Aharonov-Bohm oscillations in a
mesoscopic diffusive gold ring as a function of the DC bias voltage VDC. The
amplitude of the h/e oscillations increases with VDC once the Thouless energy Ec
and thermal energy are exceeded, and decreases at higher values of VDC. The
increase of the amplitude is interpreted in terms of a superposition of the statistically
independent contributions of eVDC/Ec energy intervals, whereas its
decrease at high VDC could be attributed to enhanced inelastic scattering
processes.
PACS numbers: 73.23-b, 03.65.Bz
UDC 538.945
Keywords: mesoscopic systems, Aharonov-Bohm oscillations, ensemble averaging
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