Coherent Tunneling Transport in Molecular Junctions

被引：65

作者：

Song, Hyunwook ^{[2
]}

Kim, Youngsang ^{[3
]}

Jeong, Heejun ^{[3
]}

Reed, Mark A. ^{[1
]}

Lee, Takhee ^{[2
]}

机构：

[1] Yale Univ, Dept Elect Engn & Appl Phys, New Haven, CT 06520 USA

[2] Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Dept Nanobio Mat & Elect, Kwangju 500712, South Korea

[3] Hanyang Univ, Dept Appl Phys, Ansan 426791, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 48期

关键词：

SELF-ASSEMBLED MONOLAYERS; ELECTRON-TRANSPORT; CHARGE-TRANSPORT; METAL JUNCTIONS; FABRICATION; GOLD; ALKANETHIOLS;

D O I：

10.1021/jp104760b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using saturated alkyl chain series with a dithiol anchor group, we systematically examined the intrinsic charge transport of single-molecule junctions in an electromigrated nanogap electrode. The saturated alkyl molecular system constitutes an important control series in molecular transport experiments to corroborate valid molecular junctions, because molecular energy levels re:main nearly unchanged with molecular length, and the transport mechanism has been unambiguously established. Inelastic electron tunneling spectroscopy, temperature-variable current-voltage measurement, length-dependent conductance measurement, and transition voltage spectroscopy all validate the observation of intrinsic molecular properties in the electromigrated nanogap junctions.

引用

页码：20431 / 20435

页数：5

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