Transport in superlattices of magnetic nanoparticles: Coulomb blockade, hysteresis, and switching induced by a magnetic field

被引：34

作者：

Tan, Reasmey P.

Carrey, Julian

Desvaux, Celine

Grisolia, Jeremie

Renaud, Philippe

Chaudret, Bruno

Respaud, Marc

机构：

[1] INSA, Lab Phys & Chim Nanoobjets, F-31077 Toulouse, France

[2] Freescale, Semicond Prod Sector, F-31023 Toulouse, France

[3] CNRS, Chim Coordinat Lab, F-31077 Toulouse 4, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.99.176805

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on magnetotransport measurements on millimetric superlattices of Co-Fe nanoparticles surrounded by an organic layer. At low temperature, the transition between the Coulomb blockade and the conductive regime becomes abrupt and hysteretic. The transition between both regimes can be induced by a magnetic field, leading to a novel mechanism of magnetoresistance. Between 1.8 and 10 K, a high-field magnetoresistance attributed to magnetic disorder at the surface of the particles is also observed. Below 1.8 K, this magnetoresistance abruptly collapses and a low-field magnetoresistance is observed.

引用

收藏

页数：4

相关论文

共 36 条

[1] Insulator-to-metal transition in nanocrystal assemblies driven by in situ mild thermal annealing [J].

Beecher, P ;

Quinn, AJ ;

Shevchenko, EV ;

Weller, H ;

Redmond, G .

NANO LETTERS, 2004, 4 (07) :1289-1293

[2] Electron glass in ultrathin granular Al films at low temperatures [J].

Bielejec, E ;

Wu, WH .

PHYSICAL REVIEW LETTERS, 2001, 87 (25) :256601/1-256601/4

[3] Spin-dependent tunneling in self-assembled cobalt-nanocrystal superlattices [J].

Black, CT ;

Murray, CB ;

Sandstrom, RL ;

Sun, SH .

SCIENCE, 2000, 290 (5494) :1131-1134

[4] Magnetoresistance in bicrystal Fe3O4 thin films [J].

Bollero, A ;

Ziese, M ;

Esquinazi, P ;

Dörr, K ;

Mönch, I .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2005, 290 :1134-1137

[5] High field magnetoresistance in Co-Al-O nanogranular films [J].

Chayka, O ;

Kraus, L ;

Lobotka, P ;

Sechovsky, V ;

Kocourek, T ;

Jelinek, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2006, 300 (02) :293-299

[6] Giant room-temperature magnetoresistance in polycrystalline Zn0.41Fe2.59O4 with α-Fe2O3 grain boundaries -: art. no. 107202 [J].

Chen, P ;

Xing, DY ;

Du, YW ;

Zhu, JM ;

Feng, D .

PHYSICAL REVIEW LETTERS, 2001, 87 (10) :1-107202

[7] PROPERTIES OF THE ELECTRON GLASS [J].

DAVIES, JH ;

LEE, PA ;

RICE, TM .

PHYSICAL REVIEW B, 1984, 29 (08) :4260-4271

[8] ELECTRON GLASS [J].

DAVIES, JH ;

LEE, PA ;

RICE, TM .

PHYSICAL REVIEW LETTERS, 1982, 49 (10) :758-761

[9] Multimillimetre-large superlattices of air-stable iron-cobalt nanoparticles [J].

Desvaux, C ;

Amiens, C ;

Fejes, P ;

Renaud, P ;

Respaud, M ;

Lecante, P ;

Snoeck, E ;

Chaudret, B .

NATURE MATERIALS, 2005, 4 (10) :750-753

[10] Self-assembly of ordered, robust, three-dimensional gold nanocrystal/silica arrays [J].

Fan, HY ;

Yang, K ;

Boye, DM ;

Sigmon, T ;

Malloy, KJ ;

Xu, HF ;

López, GP ;

Brinker, CJ .

SCIENCE, 2004, 304 (5670) :567-571

← 1 2 3 4 →