| Issue |
EPL
Volume 88, Number 6, December 2009
|
|
|---|---|---|
| Article Number | 67002 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/88/67002 | |
| Published online | 22 December 2009 | |
A scheme for accurate detection of molecular bonds in quantum dots
College of Science, Nanjing University of Aeronautics and Astronautics - Nanjing, 210016, China
Corresponding author: xhyan@nuaa.edu.cn
Received:
21
May
2009
Accepted:
20
November
2009
We propose a closed two-terminal Aharonov-Bohm (AB) interferometer which contains a double quantum dot to detect the coherent molecule-like states. This scheme is based on the measurement of AB oscillation properties by changing interdot coupling strength. By comparison with an open multiterminal AB setup, we find that due to the phase locking effect the initial phase of the AB oscillations changes from 
to 
with the increase of the interdot coupling. The crossover implies the transition from the nearly decoupled states with the increase of the to the merged artificial molecular states.
PACS: 73.23.-b – Electronic transport in mesoscopic systems / 73.63.-b – Electronic transport in nanoscale materials and structures / 72.10.Bg – General formulation of transport theory
© EPLA, 2009
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