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  1. Home
  3. Spin Dynamics In Open Quantum Systems: A Dlvn-tddft Approach.
  1. Home
  3. Spin Dynamics In Open Quantum Systems: A Dlvn-tddft Approach.

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Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
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Published on: January 25, 2020

Spin Dynamics in Open Quantum Systems: A DLvN-TDDFT Approach.

Kashinath T Chavan1, Oded Hod2, Juan E Peralta1

  • 1Department of Physics, Central Michigan University, Mount Pleasant, Michigan 48859, United States.

Journal of Chemical Theory and Computation
|May 26, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

We developed a new computational method, driven Liouville-von Neumann (DLvN-TDDFT), to simulate electron spin transport in quantum systems. This approach reveals complex spin dynamics in magnetic nanoribbons, advancing spintronics research.

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Area of Science:

  • Quantum mechanics
  • Condensed matter physics
  • Materials science

Background:

  • Modeling electron spin transport in open quantum systems is crucial for spintronics.
  • Existing methods may not fully capture dynamical spin phenomena.

Purpose of the Study:

  • To introduce and validate a novel computational framework for simulating spin-polarized electron transport.
  • To explore spin dynamics in low-dimensional magnetic materials.

Main Methods:

  • Developed a spin-uncompensated driven Liouville-von Neumann methodology.
  • Integrated this into the time-dependent density functional theory (DLvN-TDDFT) framework.
  • Validated the approach using benchmark simulations of molecular junctions.

Main Results:

  • Applied the DLvN-TDDFT to a magnetic zigzag graphene nanoribbon junction.
  • Observed rich spin-resolved current dynamics under external electric fields.
  • Demonstrated the framework's capability to model complex spin behavior.

Conclusions:

  • The DLvN-TDDFT framework is a powerful tool for studying dynamical spintronic phenomena.
  • This methodology shows promise for investigating spin transport in low-dimensional open quantum systems.