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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Resonance theory for discrete models: methodology and isolated resonances
Shachar Klaiman1, Naomichi Hatano
1Schulich Faculty of Chemistry, Technion, Israel Institute of Technology, Haifa, Israel. shachark@technion.ac.il
The Journal of Chemical Physics
|April 26, 2011
Summary
This study introduces a new method for calculating electronic conductance in nanoscale quantum systems. It accurately describes resonance effects, even near band edges, improving upon existing models for molecular junctions and quantum dots.
Area of Science:
- Quantum physics
- Condensed matter physics
- Nanotechnology
Background:
- Open quantum systems are crucial for understanding electronic transport in nanoscale devices.
- Resonances significantly influence conductance in molecular junctions and quantum dots.
- Existing methods struggle to accurately model resonances near band edges.
Purpose of the Study:
- To develop a novel method for calculating conductance in open quantum systems on discretized space.
- To accurately describe the effects of resonances on electronic conductance, particularly near band edges.
- To improve theoretical models for nanoscale electronic devices.
Main Methods:
- Utilizing Green's function expansion.
- Expanding with respect to eigenstates of the effective Hamiltonian for open quantum systems.
- Developing a new resonance profile applicable to isolated resonances across the spectrum.
Main Results:
- A novel resonance profile is developed.
- The method accurately describes isolated resonances, including those near band edges.
- This overcomes limitations of previous Lorentzian profile approximations.
Conclusions:
- The developed method offers a more versatile and accurate approach to calculating conductance in open quantum systems.
- It provides a better understanding of resonance effects in nanoscale electronic devices.
- This advancement has implications for the design and analysis of molecular junctions and quantum dots.
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