Preprint

FZJ-2025-02242

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Distributed Current Injection into a 1D Ballistic Edge Channel

Moors, K. (Corresponding author)FZJ* ; Wagner, C.FZJ* ; Soltner, H.FZJ* ; Lüpke, F.FZJ* ; Tautz, F. S.FZJ* ; Voigtländer, B. (Last author)FZJ*

2025
arXiv

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Please use a persistent id in citations: doi:10.48550/ARXIV.2502.17995

Abstract: Quantized charge transport through a 1D ballistic channel was famously explained decades ago by Rolf Landauer, by considering local injection of charge carriers from two contacts at the ends of the 1D channel. With the rise of quantum (spin/anomalous) Hall insulators, i.e., 2D material systems with ballistic 1D edge states along their perimeter, a different geometry has become relevant: The distributed injection of charge carriers from a 2D half-plane with residual conductivity into the 1D edge channel. Here, we generalize Landauer's treatment of ballistic transport to such a setup and identify hallmark signatures that distinguish a ballistic channel from a resistive one.

Keyword(s): Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ; FOS: Physical sciences

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Contributing Institute(s):

1. Quantum Nanoscience (PGI-3)
2. Halbleiter-Nanoelektronik (PGI-9)

Research Program(s):

1. 5213 - Quantum Nanoscience (POF4-521) (POF4-521)
2. ML4Q - Machine Learning for Quantum (101120240) (101120240)
3. QuantERA - QuantERA ERA-NET Cofund in Quantum Technologies (731473) (731473)
4. DFG project G:(GEPRIS)443416235 - 1D topologische Supraleitung und Majorana Zustände in van der Waals Heterostrukturen charakterisiert durch Rastersondenmikroskopie (443416235) (443416235)

Appears in the scientific report 2025

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