Nanodcal

Official Resources

• Homepage: https://www.nanoacademic.com/nanodcal
• Documentation: https://docs.nanoacademic.com/nanodcal/
• Source Repository: Proprietary (Nanoacademic)
• License: Proprietary / Academic License Available

Overview

Nanodcal is a state-of-the-art quantum transport simulation software based on the Non-Equilibrium Green's Function (NEGF) density functional theory (DFT). It is designed to simulate electron transport through nanostructures and devices from first principles. Developed by Nanoacademic Technologies, it handles zero-bias and finite-bias conditions for molecular electronics, spintronics, and nanoscale devices.

Scientific domain: Quantum transport, NEGF-DFT, molecular electronics, spintronics
Target user community: Device physicists, electrical engineers, materials scientists

Theoretical Methods

• Non-Equilibrium Green's Function (NEGF) formalism
• Density Functional Theory (DFT) with LCAO basis
• Keldysh formalism for finite bias
• Spin-Orbit Coupling (SOC)
• Phonon scattering (inelastic transport)
• AC transport (time-dependent)

Capabilities (CRITICAL)

• Transport Properties: I-V curves, transmission spectra, conductance, shot noise
• Electronic Structure: Band structure, DOS, complex band structure
• Spin: Collinear and non-collinear spin transport, spin torque
• Device Simulation: Two-probe systems (source-drain), multi-probe systems
• Analysis: Scattering states, transmission eigenstates, local currents
• Thermal: Thermoelectric coefficients (Seebeck), phonon transport (via NanoPhonon)

Sources: Nanodcal website, Phys. Rev. B 63, 245407 (2001) (Methodology)

Inputs & Outputs

• Input formats: Python/Matlab-based scripting interface
• Output data types: HDF5 data, text files for I-V, transmission, etc.

Interfaces & Ecosystem

• Device Studio: Graphical interface for building devices and analyzing results
• Python: Scripting API for automation
• Parallelization: MPI/OpenMP hybrid

Workflow and Usage

1. Build device structure (Left Lead - Scattering Region - Right Lead).
2. Perform SCF calculation for leads (bulk).
3. Perform NEGF-SCF calculation for the central region (open system).
4. Calculate transmission and current.
5. Analyze results using Device Studio.

Performance Characteristics

• Optimized for large-scale transport calculations
• Efficient handling of semi-infinite leads
• Parallelized for clusters

Application Areas

• Molecular junctions
• Magnetic Tunnel Junctions (MTJ)
• 2D material transistors (FETs)
• Quantum point contacts
• Photocurrents

Community and Support

• Commercial software with professional support
• Academic licenses available
• Developed by Nanoacademic Technologies (McGill University spinoff)

Verification & Sources

Primary sources:

1. Homepage: https://www.nanoacademic.com/nanodcal
2. Publication: J. Taylor, H. Guo, and J. Wang, Phys. Rev. B 63, 245407 (2001)

Confidence: VERIFIED

Verification status: ✅ VERIFIED

• Website: ACTIVE
• Documentation: COMPREHENSIVE
• Source: PROPRIETARY
• Development: ACTIVE (Nanoacademic)
• Applications: NEGF-DFT transport, device simulation, I-V curves