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Relaxation and Dephasing in a Two-Electron 13C Nanotube Double Quantum Dot

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  • E166802

    Forlagets udgivne version, 465 KB, PDF-dokument

We use charge sensing of Pauli blockade (including spin and isospin) in a two-electron 13C nanotube double quantum dot to measure relaxation and dephasing times. The relaxation time T1 first decreases with a parallel magnetic field and then goes through a minimum in a field of 1.4 T. We attribute both results to the spin-orbit-modified electronic spectrum of carbon nanotubes, which at high field enhances relaxation due to bending-mode phonons. The inhomogeneous dephasing time T2* is consistent with previous data on hyperfine coupling strength in 13C nanotubes.
OriginalsprogEngelsk
TidsskriftPhysical Review Letters
Vol/bind102
Udgave nummer16
Sider (fra-til)166802
Antal sider4
ISSN0031-9007
DOI
StatusUdgivet - 22 apr. 2009

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