Electronic transport spectroscopy of carbon nanotubes in a magnetic field

被引：84

作者：

Jarillo-Herrero, P ^{[1
]}

Kong, J ^{[1
]}

van der Zant, HSJ ^{[1
]}

Dekker, C ^{[1
]}

Kouwenhoven, LP ^{[1
]}

De Franceschi, S ^{[1
]}

机构：

[1] Delft Univ Technol, Kavli Inst Nanosci, NL-2600 GA Delft, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.94.156802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report magnetic field spectroscopy measurements in carbon nanotube quantum dots exhibiting fourfold shell structure in the energy level spectrum. The magnetic field induces a large splitting between the two orbital states of each shell, demonstrating their opposite magnetic moment and determining transitions in the spin and orbital configuration of the quantum dot ground state. We use inelastic cotunneling spectroscopy to accurately resolve the spin and orbital contributions to the magnetic moment. A small coupling is found between orbitals with opposite magnetic moment leading to anticrossing behavior at zero field.

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页数：4

相关论文

共 19 条

[1] ELECTRONIC STATES OF CARBON NANOTUBES [J].

AJIKI, H ;

ANDO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1993, 62 (04) :1255-1266

[2] Single-electron transport in ropes of carbon nanotubes [J].

Bockrath, M ;

Cobden, DH ;

McEuen, PL ;

Chopra, NG ;

Zettl, A ;

Thess, A ;

Smalley, RE .

SCIENCE, 1997, 275 (5308) :1922-1925

[3] Multiwall carbon nanotubes as quantum dots -: art. no. 156801 [J].

Buitelaar, MR ;

Bachtold, A ;

Nussbaumer, T ;

Iqbal, M ;

Schönenberger, C .

PHYSICAL REVIEW LETTERS, 2002, 88 (15) :4

[4] h/e magnetic flux modulation of the energy gap in nanotube quantum dots [J].

Coskun, UC ;

Wei, TC ;

Vishveshwara, S ;

Goldbart, PM ;

Bezryadin, A .

SCIENCE, 2004, 304 (5674) :1132-1134

[5] Electron cotunneling in a semiconductor quantum dot [J].

De Franceschi, S ;

Sasaki, S ;

Elzerman, JM ;

van der Wiel, WG ;

Tarucha, S ;

Kouwenhoven, LP .

PHYSICAL REVIEW LETTERS, 2001, 86 (05) :878-881

[6] Carbon nanotubes as molecular quantum wires [J].

Dekker, C .

PHYSICS TODAY, 1999, 52 (05) :22-28

[7]

Grabert H., 1992, Single Charge Tunneling

[8] NEW ONE-DIMENSIONAL CONDUCTORS - GRAPHITIC MICROTUBULES [J].

HAMADA, N ;

SAWADA, S ;

OSHIYAMA, A .

PHYSICAL REVIEW LETTERS, 1992, 68 (10) :1579-1581

[9] Orbital Kondo effect in carbon nanotubes [J].

Jarillo-Herrero, P ;

Kong, J ;

van der Zant, HSJ ;

Dekker, C ;

Kouwenhoven, LP ;

De Franceschi, S .

NATURE, 2005, 434 (7032) :484-488

[10] Electron-hole symmetry in a semiconducting carbon nanotube quantum dot [J].

Jarillo-Herrero, P ;

Sapmaz, S ;

Dekker, C ;

Kouwenhoven, LP ;

van der Zant, HSJ .

NATURE, 2004, 429 (6990) :389-392