Quantized magneto-thermoelectric transport in low-dimensional junctions

TL;DR

This paper investigates the quantized magneto-thermoelectric transport in low-dimensional C/N-knot junctions under magnetic fields, revealing how quantum Hall effects and spatial quantization influence heat and electric currents.

Contribution

It introduces a novel analysis of quantized thermoelectric effects in C/N-knot junctions with magnetic fields, highlighting the interplay between quantum Hall states and spatial quantization.

Findings

Observation of maximums in thermoelectric current when Landau orbit dimensions match the junction

Identification of heat flow splitting due to Lorentz force effects

Demonstration of quantum Hall and spatial quantization interplay in thermoelectric transport

Abstract

Quantization of the magneto-thermoelectric transport is studied when an external d.c. magnetic field is applied to the C/N-knot formed as crossing between a narrow stripe of conducting atomic monolayer C on the one hand and metal stripe N on the other hand. The temperature gradient in C is created by injecting the non-equilibrium electrons, holes and phonons from the heater H thereby directing them toward the C/N-knot. A non-linear coupling between electron states of the C/N-knot counter electrodes causes splitting of the heat flow into several fractions owing to the Lorentz force acting in the C/N-knot vicinity, thereby inducing the magneto-thermoelectric current in N whereas the phonons pass and propagate along C further ahead. The heat flow along C generates a transversal electric current in N showing a series of maximums when dimensions of the Landau orbits and the C/N-knot match each other. It allows observing the interplay between the quantum Hall effect and the spatial quantization.