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Direct measurement of the transmission matrix of a mesoscopic conductor

Shepard, K. L. and Roukes, M. L. and Van der Gaag, B. P. (1992) Direct measurement of the transmission matrix of a mesoscopic conductor. Physical Review Letters, 68 (17). pp. 2660-2663. ISSN 0031-9007.

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We have developed an experimental approach which permits evaluation of the entire transmission matrix of a mesoscopic conductor. Results are presented from two new investigations enabled by this technique: (a) We study ballistic multiprobe conductors in the limit of weak probe coupling, and (b) we image modal features in the distribution function of electrons emerging from a quantum point contact.

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Additional Information:©1992 The American Physical Society Received 31 December 1991 We thank A. Scherer for assistance. M.L.R. acknowledges helpful discussions with M. Büttiker during initial phases of this work (1988). K.L.S. gratefully acknowledges support from the Hertz Foundation and the NSF through Grant No. EID87-11693.
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Deposited On:12 Dec 2006
Last Modified:18 Sep 2014 18:11

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