Full characterization of a carbon nanotube parallel double quantum dot

@article{Abulizi2016FullCO,
  title={Full characterization of a carbon nanotube parallel double quantum dot},
  author={Gulibusitan Abulizi and Andreas Baumgartner and Christian Sch{\"o}nenberger},
  journal={physica status solidi (b)},
  year={2016},
  volume={253}
}
We have measured the differential conductance of a parallel carbon nanotube (CNT) double quantum dot (DQD) with strong inter‐dot capacitance and inter‐dot tunnel coupling. Nominally, the device consists of a single CNT with two contacts. However, we identify two sets of Coulomb blockade (CB) diamonds that do not block transport individually, which suggest that two quantum dots (QDs) are contacted in parallel. We find strong and periodic anti‐crossings in the gate and bias dependence, which are… 
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References

SHOWING 1-10 OF 93 REFERENCES
Parallel carbon nanotube quantum dots and their interactions
We present quantum transport measurements of interacting parallel quantum dots formed in the strands of a carbon nanotube rope. In this molecular quantum dot system, transport is dominated by one
Pauli spin blockade in carbon nanotube double quantum dots
We report Pauli spin blockade in a carbon nanotube double quantum dot defined by tunnel barriers at the contacts and a structural defect in the nanotube. We observe a pronounced current suppression
Eightfold shell filling in a double-wall carbon nanotube quantum dot.
TLDR
It is shown that the observed eightfold shell filling is a unique characteristic of a double-wall carbon nanotube quantum-dot device, which implies an eightfold degeneracy in the single-particle energy levels, which is higher than the fourfold degenerateacy of a single-wallcarbon nanotubes.
Resonant and Inelastic Andreev Tunneling Observed on a Carbon Nanotube Quantum Dot.
TLDR
Two fundamental subgap transport processes through a quantum dot (QD) with a superconducting contact are observed, with a single resonance with position, shape, and amplitude consistent with the theoretically predicted resonant Andreev tunneling through a single QD level.
Ultraclean single, double, and triple carbon nanotube quantum dots with recessed Re bottom gates.
TLDR
This work demonstrates that ultraclean single, double, and triple quantum dots (QDs) can be formed reliably in a carbon nanotube (CNT) by a straightforward fabrication technique and opens up a route to more complex devices based on ultracleans CNTs, since it allows for postgrowth processing.
Molecular states in carbon nanotube double quantum dots
We report electrical transport measurements through a semiconducting single-walled carbon nanotube with three additional top gates. At low temperatures the system acts as a double quantum dot with
Electron transport in very clean, as-grown suspended carbon nanotubes
TLDR
The clean transport data show a correlation between the contact junction resistance and the various transport regimes in single-walled-carbon-nanotube devices, and electrical transport data can be used to probe the band structures of nanotubes, including nonlinear band dispersion.
Interference and Interaction in multi-wall carbon nanotubes
Abstract.We report equilibrium electric resistance R and tunneling spectroscopy (dI/dV)measurements obtained on single multi-wall nanotubes contacted by four metallic Au fingers from above. At low
Optimized fabrication and characterization of carbon nanotube spin valves
We report an improved fabrication scheme for carbon based nanospintronic devices and demonstrate the necessity for a careful data analysis to investigate the fundamental physical mechanisms leading
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