Cotunneling Transport at Singlet-Triplet Transition in Carbon Nanotube Quantum Dots

• Authors: G. Ilnicki , S. Moriyama , J. Martinek , T. Fuse , K. Ishibashi
• Languages of publication: EN

Abstracts

EN

Electronic transport through a quantum dot in the Coulomb-blockade cotunelling regime is investigated both experimentally and theoretically, where a single-wall carbon-nanotube weakly coupled to metallic leads plays a role of the dot. We observe a pronounced current peak for the singlet-triplet transition in a half-shell filling regime due to inelastic cotunneling processes. Using the second order perturbation theory we explain physical mechanisms determining the details of signal.

Keywords

EN

73.22.-f; 73.23.Hk; 73.63.Fg

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 73.22.-f: Electronic structure of nanoscale materials and related systems
• 73.63.Fg: Nanotubes

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 299-302

Dates

published

2009-01

Contributors

author

G. Ilnicki

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań. Poland

author

S. Moriyama

• Advanced Device Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan

author

J. Martinek

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań. Poland
• Institute for Materials Research, Tohoku University, Sendai 980-77, Japan

author

T. Fuse

• Advanced Device Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan

author

K. Ishibashi

• Advanced Device Laboratory, RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan

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Identifiers

DOI

10.12693/APhysPolA.115.299