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Titolo:
Phase-coherent conduction in mesoscopic normal-metal/superconductor hybridjunctions
Autore:
Kim, N; Lee, HJ; Kim, JJ; Lee, JO; Park, JW; Yoo, KH; Lee, S; Park, KW;
Indirizzi:
Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea Pohang Univ Sci & Technol Pohang South Korea 790784 790784, South Korea Chonbuk Natl Univ, Dept Phys, Chonju 561756, South Korea Chonbuk Natl Univ Chonju South Korea 561756 , Chonju 561756, South Korea Korea Res Inst Stand & Sci, Elect Grp, Taejon 305600, South Korea Korea Res Inst Stand & Sci Taejon South Korea 305600 305600, South Korea Elect & Telecommun Res Inst, Telecommun Basic Res Lab, Taejon 305350, South Korea Elect & Telecommun Res Inst Taejon South Korea 305350 05350, South Korea
Titolo Testata:
SOLID STATE COMMUNICATIONS
fascicolo: 1, volume: 115, anno: 2000,
pagine: 29 - 34
SICI:
0038-1098(2000)115:1<29:PCIMNH>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUANTUM TRANSPORT; SUPERCONDUCTOR; MICROJUNCTIONS; INTERFERENCE; ELECTRONS;
Keywords:
heterojunctions; nanostructures; surfaces and interfaces; electronic transport;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, HJ Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea Pohang Univ Sci & Technol Pohang South Korea 790784 South Korea
Citazione:
N. Kim et al., "Phase-coherent conduction in mesoscopic normal-metal/superconductor hybridjunctions", SOL ST COMM, 115(1), 2000, pp. 29-34

Abstract

In this paper we report about the transport properties of mesoscopic normal-metal/superconductor (NS) hybrid systems with two different junction layouts. One is a junction fabricated by overlaying S on N wire and the other with S sandwiched between two N wires, forming an NSN structure. At zero bias all the junctions exhibited a sharp decrease of dV/dI, which is believed to arise from the interference between the disorder-scattered and the Andreev-reflected quasiparticles. A small magnetic field corresponding to one flux quantum through the normal metal region, applied in parallel with the NSjunction, easily suppressed the anomalous zero-bias conductance enhancement for the sandwich-junction sample. This high sensitivity to a small magnetic field observed in our systems of mesoscopic NS junctions in a diffusive-transport regime directly confirms the electron-hole-interference origin ofthe zero-bias anomaly. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 12:11:01