| Autor: |
Churchill HO; Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA., Kuemmeth F, Harlow JW, Bestwick AJ, Rashba EI, Flensberg K, Stwertka CH, Taychatanapat T, Watson SK, Marcus CM |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2009 Apr 24; Vol. 102 (16), pp. 166802. Date of Electronic Publication: 2009 Apr 22. |
| DOI: |
10.1103/PhysRevLett.102.166802 |
| Abstrakt: |
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 T{2} is consistent with previous data on hyperfine coupling strength in 13C nanotubes. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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