| Issue |
EPJ Web Conf.
Volume 356, 2026
5th International Conference on Condensed Matter and Applied Physics (ICC 2025)
|
|
|---|---|---|
| Article Number | 01007 | |
| Number of page(s) | 5 | |
| Section | Condensed Matter | |
| DOI | https://doi.org/10.1051/epjconf/202635601007 | |
| Published online | 05 March 2026 | |
https://doi.org/10.1051/epjconf/202635601007
Deciphering Orbital and Spin-Resolved Transmission Spectra via the NEGF Formalism
1 Department of Physics, Birla Institute of technology and Science, Pilani 333031, India
2 Department of Physics, Birla Institute of technology and Science, Pilani 333031, India
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Published online: 5 March 2026
Abstract
By using the Non-equilibrium Green's function (NEGF) formalism to study charge and spin transport in a quantum ribbon governed by two contrasting mechanisms: magnetic flux-induced orbital quantization described by the 1D effective orbital model, and internal exchange interactions described by the long-range RKKY Hamiltonian. By examining the energy-dependent transport response, we compare how these mechanisms affect the overall transport behavior of the system. The orbital effect leads to flux-controlled energy gaps and modulated charge transport, whereas RKKY interactions induce exchange-driven band modifications. Additionally, introducing an inelastic scattering parameter breaks phase coherence, driving a crossover from ballistic to diffusive transport, thereby highlighting the role of dephasing in realistic quantum devices.
© The Authors, published by EDP Sciences, 2026
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