Spin-Dependent Conductance in Co/C60/Co/Ni Single-Molecule Junctions in the Contact Regime

被引：22

作者：

Fei, Xiangmin ^{[1
,2
]}

Wu, Guangfen ^{[1
]}

Lopez, Vanessa ^{[1
]}

Lu, Gang ^{[1
]}

Gao, Hong-Jun ^{[2
]}

Gao, Li ^{[1
]}

机构：

[1] Calif State Univ Northridge, Dept Phys & Astron, Northridge, CA 91330 USA

[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2015年 / 119卷 / 21期

基金：

美国国家科学基金会;

关键词：

GIANT MAGNETORESISTANCE; C-60; INJECTION;

D O I：

10.1021/acs.jpcc.5b01763

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：

The spin dependent conductance In Co/C-60/Co/Ni single-molecule magnetic tunnel junctions: has been measured by combining spin-polarized scanning tunneling spectroscopy and current-displacement measurements Wing an ultrahigh vacuum low temperature scanning tunneling micro scope (STM) at 5 K. With an electrical contact between molecule and electrodes, the measured junction conductance is 0.02-0.13 G(0) in the low-conductance state and 012-0.76 G(0) in the high-conductance state, respectively. The investigated single-molecule junctions exhibit large tunnel magnetoresistance (TMR) ratios higher that -60%. A variation of TMR from -63% to -94% has been observed due to different Co/Ni electrodes.

引用

页码：11975 / 11981

页数：7

共 44 条

[1] Single Molecule Magnetoresistance with Combined Antiferromagnetic and Ferromagnetic Electrodes [J].

Bagrets, Alexei ;

Schmaus, Stefan ;

Jaafar, Ali ;

Kramczynski, Detlef ;

Yamada, Toyo Kazu ;

Alouani, Mebarek ;

Wulfhekel, Wulf ;

Evers, Ferdinand .

NANO LETTERS, 2012, 12 (10) :5131-5136

[2] Unravelling the role of the interface for spin injection into organic semiconductors [J].

Barraud, Clement ;

Seneor, Pierre ;

Mattana, Richard ;

Fusil, Stephane ;

Bouzehouane, Karim ;

Deranlot, Cyrile ;

Graziosi, Patrizio ;

Hueso, Luis ;

Bergenti, Ilaria ;

Dediu, Valentin ;

Petroff, Frederic ;

Fert, Albert .

NATURE PHYSICS, 2010, 6 (08) :615-620

[3] Magnetic Response and Spin Polarization of Bulk Cr Tips for In-Field Spin-Polarized Scanning Tunneling Microscopy [J].

Corbetta, Marco ;

Ouazi, Safia ;

Borme, Jerome ;

Nahas, Yasmine ;

Donati, Fabio ;

Oka, Hirofumi ;

Wedekind, Sebastian ;

Sander, Dirk ;

Kirschner, Juergen .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2012, 51 (03)

[4] Tuning of metal work functions with self-assembled monolayers [J].

de Boer, B ;

Hadipour, A ;

Mandoc, MM ;

van Woudenbergh, T ;

Blom, PWM .

ADVANCED MATERIALS, 2005, 17 (05) :621-+

[5] Room temperature spin polarized injection in organic semiconductor [J].

Dediu, V ;

Murgia, M ;

Matacotta, FC ;

Taliani, C ;

Barbanera, S .

SOLID STATE COMMUNICATIONS, 2002, 122 (3-4) :181-184

[6]

Dediu VA, 2009, NAT MATER, V8, P707, DOI [10.1038/NMAT2510, 10.1038/nmat2510]

[7] Surface states of cobalt nanoislands on Cu(111) -: art. no. 236801 [J].

Diekhöner, L ;

Schneider, MA ;

Baranov, AN ;

Stepanyuk, VS ;

Bruno, P ;

Kern, K .

PHYSICAL REVIEW LETTERS, 2003, 90 (23) :4

[8] Chemical control of electrical contact to sp2 carbon atoms [J].

Frederiksen, Thomas ;

Foti, Giuseppe ;

Scheurer, Fabrice ;

Speisser, Virginie ;

Schull, Guillaume .

NATURE COMMUNICATIONS, 2014, 5

[9] Room-Temperature Spin Transport in C60-Based Spin Valves [J].

Gobbi, Marco ;

Golmar, Federico ;

Llopis, Roger ;

Casanova, Felix ;

Hueso, Luis E. .

ADVANCED MATERIALS, 2011, 23 (14) :1609-+

[10] A spin-selective approach for surface states at Co nanoislands [J].

Heinrich, B. W. ;

Iacovita, C. ;

Rastei, M. V. ;

Limot, L. ;

Ignatiev, P. A. ;

Stepanyuk, V. S. ;

Bucher, J. P. .

EUROPEAN PHYSICAL JOURNAL B, 2010, 75 (01) :49-56

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