Laughlin charge pumping from interplay of chiral Dirac and chiral Majorana modes
arXiv:2509.14512 · doi:10.1103/8drx-qktw
Abstract
Laughlin charge pumping has provided critical insights into the topological classification of individual materials, but remains largely unexplored in topological junctions. We explore Laughlin charge pumping in junctions composed of a chiral topological superconductor sandwiched between two quantum anomalous Hall insulators, driven by an adiabatically varying magnetic flux. Here, charge pumping can be mediated merely by chiral Dirac modes or by the interplay of chiral Dirac and chiral Majorana modes (CMMs). In the former case, a variation of one magnetic flux quantum induces the pumping of a unit charge, as the chiral Dirac mode accumulates the full flux-induced phase. In contrast, in the latter case, pumping a unit charge requires a variation of fractional magnetic flux quanta, determined by the device geometry and the parity of the number of enclosed superconducting vortices. This unique feature results from the charge-neutral and zero-momentum nature of zero-energy CMMs. Our work offers an experimentally viable pathway toward detecting CMMs and could also inspire further research into Laughlin charge or spin pumping in diverse topological junctions, which are now within experimental reach.
arXiv commentMain text: 7 pages, 4 figures, and 2 tables; Supplemental material: 5 pages, 1 figure
References in corpus (50)
- Topological insulators and superconductors
- Non-Abelian Anyons and Topological Quantum Computation
- Unpaired Majorana fermions in quantum wires
- Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
- Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
- New directions in the pursuit of Majorana fermions in solid state systems
- Quantized Anomalous Hall Effect in Magnetic Topological Insulators
- Non-abelian statistics of half-quantum vortices in p-wave superconductors
- Topological Insulator Materials
- Topological superconductors: a review
- Kwant: a software package for quantum transport
- Majorana Zero Modes and Topological Quantum Computation
- Time Reversal Polarization and a Z_2 Adiabatic Spin Pump
- Topological quantization of the spin Hall effect in two-dimensional paramagnetic semiconductors
- Scattering approach to parametric pumping
- Electrically detected interferometry of Majorana fermions in a topological insulator
- Probing Neutral Majorana Fermion Edge Modes with Charge Transport
- Chiral Topological Superconductor From the Quantum Hall State
- Colloquium: Quantum anomalous Hall effect
- Majorana Fermions and Topology in Superconductors
- Topological Quantum Computation Based on Chiral Majorana Fermions
- Chiral topological superconductor and half-integer conductance plateau from quantum anomalous Hall plateau transition
- Scattering theory of topological insulators and superconductors
- Non-Majorana Origin of the Half-Quantized Conductance Plateau in Quantum Anomalous Hall Insulator and Superconductor Hybrid Structures
- Conductance and noise signatures of Majorana backscattering
- A mechanism of conductance plateau without 1D chiral Majorana fermions
- Interference of chiral Andreev edge states
- Charge Pumping in Mesoscopic Systems coupled to a Superconducting Lead
- Topological classification of adiabatic processes
- Laughlin's topological charge pump in an atomic Hall cylinder
- Scattering theory of chiral Majorana fermion interferometry
- Non-Abelian Braiding of Chiral Majorana Fermions by Quantum Dots
- Effects of Domain Walls in Quantum Anomalous Hall Insulator/Superconductor Heterostructures
- Induced superconducting correlations in the quantum anomalous Hall insulator
- Creation of Chiral Interface Channels for Quantized Transport in Magnetic Topological Insulator Multilayer Heterostructures
- Electrically tunable topological superconductivity and Majorana fermions in two dimensions
- Even-odd effect and Majorana states in full-shell nanowires
- Recent progress on Majorana in semiconductor-superconductor heterostructures--Engineering and detection
- An optimal topological spin pump
- Andreev interference in adiabatic pumping
- Noise signatures for determining chiral Majorana fermion modes
- Theory of Caroli-de Gennes-Matricon analogs in full-shell hybrid nanowires
- Majorana-Josephson Interferometer
- Adiabatic quantum pumping of chiral Majorana fermions
- Proximity-induced superconducting gap in the intrinsic magnetic topological insulator MnBi2Te4
- Absence of Aharonov-Bohm effect of chiral Majorana fermion edge states
- Proximity-induced quasi-one-dimensional superconducting quantum anomalous Hall state: a promising scalable top-down approach towards localized Majorana modes
- Searching for Majorana quasiparticles at vortex cores in iron-based superconductors
- Inducing superconductivity in quantum anomalous Hall regime
- Electrostatic effects of the MnBi2Te4-superconductor hetero-structures in chiral Majorana search