Kristof Moors
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View article: Frustrated Frustration of Arrays with Four-Terminal Nb-Pt-Nb Josephson Junctions
Frustrated Frustration of Arrays with Four-Terminal Nb-Pt-Nb Josephson Junctions Open
We study the frustration pattern of a square lattice with fabricated Nb-Pt-Nb four-terminal Josephson junctions. The four-terminal geometry gives rise to a checkerboard pattern of alternating fluxes f, f′ piercing the plaquettes, which sta…
View article: Distributed Current Injection into a One-Dimensional Ballistic Edge Channel
Distributed Current Injection into a One-Dimensional Ballistic Edge Channel Open
We generalize Landauer’s theory of ballistic transport in a one-dimensional (1D) conductor to situations where charge carrier injection and extraction are not any more confined to electrodes at either end of the channel, but may occur alon…
View article: Optimizing proximitized magnetic topological insulator nanoribbons for Majorana bound states
Optimizing proximitized magnetic topological insulator nanoribbons for Majorana bound states Open
Heterostructures comprised of a magnetic topological insulator (MTI) placed in the proximity of an s-wave superconductor have emerged as a platform for the practical realization of Majorana bound states (MBSs). More specifically, it has be…
View article: Aharonov-Bohm and Altshuler-Aronov-Spivak oscillations in the quasiballistic regime in phase-pure GaAs/InAs core/shell nanowires
Aharonov-Bohm and Altshuler-Aronov-Spivak oscillations in the quasiballistic regime in phase-pure GaAs/InAs core/shell nanowires Open
The realization of various qubit systems based on high-quality hybrid superconducting quantum devices is often achieved using semiconductor nanowires. For such hybrid devices, a good coupling between the superconductor and the conducting s…
View article: Optimization of Floquet fluxonium qubits with commensurable two-tone drives
Optimization of Floquet fluxonium qubits with commensurable two-tone drives Open
Protecting superconducting qubits from low-frequency noise by operating them on dynamical sweet-spot manifolds has proven to be a promising setup, theoretically as well as experimentally . These dynamical sweet spots are induced by an exte…
View article: Synthetic spin-orbit coupling in superconductor-semiconductor hybrid nanowires with micromagnet arrays
Synthetic spin-orbit coupling in superconductor-semiconductor hybrid nanowires with micromagnet arrays Open
Spin-orbit interaction accounts for the coupling of momentum and spin degrees of freedom of electrons and holes in semiconductor materials. In quantum information processing, it allows for electrical control of spin states and for the engi…
View article: Robust quantum anomalous Hall effect with spatially uncorrelated disorder
Robust quantum anomalous Hall effect with spatially uncorrelated disorder Open
In magnetic topological insulators, a phase transition between a quantum anomalous Hall (QAH) and an Anderson localization phase can be triggered by the rotation of an applied magnetic field. Without the scattering paths along magnetic dom…
View article: Exploring binary intermetallics for advanced interconnect applications using ab initio simulations
Exploring binary intermetallics for advanced interconnect applications using ab initio simulations Open
The challenge of increasing copper (Cu) resistivity with diminishing Cu interconnect dimensions in complementary metal-oxide-semiconductor (CMOS) transistors, along with the imperative for efficient electron transport paths to fulfill scal…
View article: Distributed Current Injection into a One-Dimensional Ballistic Edge Channel
Distributed Current Injection into a One-Dimensional Ballistic Edge Channel Open
We generalize Landauer's theory of ballistic transport in a one-dimensional (1D) conductor to situations where charge carrier injection and extraction are not any more confined to electrodes at either end of the channel, but may occur alon…
View article: Topological properties of finite-size heterostructures of magnetic topological insulators and superconductors
Topological properties of finite-size heterostructures of magnetic topological insulators and superconductors Open
Heterostructures of magnetic topological insulators (MTIs) and superconductors (SCs) in two-dimensional (2D) slab and one-dimensional (1D) nanoribbon geometries have been predicted to host, respectively, chiral Majorana edge states (CMESs)…
View article: Induced superconducting correlations in a quantum anomalous Hall insulator
Induced superconducting correlations in a quantum anomalous Hall insulator Open
Thin films of ferromagnetic topological insulator materials can host the quantum anomalous Hall effect without the need for an external magnetic field. Inducing Cooper pairing in such a material is a promising way to realize topological su…
View article: Topological properties of finite-size heterostructures of magnetic topological insulators and superconductors
Topological properties of finite-size heterostructures of magnetic topological insulators and superconductors Open
Heterostructures of magnetic topological insulators (MTIs) and superconductors (SCs) in two-dimensional (2D) slab and one-dimensional (1D) nanoribbon geometries have been predicted to host, respectively, chiral Majorana edge states (CMESs)…
View article: Low-energy modeling of three-dimensional topological insulator nanostructures
Low-energy modeling of three-dimensional topological insulator nanostructures Open
We develop an accurate nanoelectronic modeling approach for realistic three-dimensional topological insulator nanostructures and investigate their low-energy surface-state spectrum. Starting from the commonly considered four-band $\boldsym…
View article: Interfaces of nodal-line semimetals: drum states, transport and refraction
Interfaces of nodal-line semimetals: drum states, transport and refraction Open
We study transport through interfaces in topological nodal-line semimetals, focusing on two geometries: a single interface between two large samples, one nodal-line semimetal and one metal, and an infinite nodal-line semimetal slab in betw…
View article: Robust Majorana bound states in magnetic topological insulator nanoribbons with fragile chiral edge channels
Robust Majorana bound states in magnetic topological insulator nanoribbons with fragile chiral edge channels Open
Magnetic topological insulators in the quantum anomalous Hall regime host ballistic chiral edge channels. When proximitized by an s-wave superconductor, these edge states offer the potential for realizing topological superconductivity and …
View article: In-plane magnetic field driven conductance modulations in topological insulator kinks
In-plane magnetic field driven conductance modulations in topological insulator kinks Open
We present low-temperature magnetoconductance measurements on Bi$_{1.5}$Sb$_{0.5}$Te$_{1.8}$Se$_{1.2}$ kinks with ribbon-shaped legs. The conductance displays a clear dependence on the in-plane magnetic field orientation. The conductance m…
View article: Conductance asymmetry in proximitized magnetic topological insulator junctions with Majorana modes
Conductance asymmetry in proximitized magnetic topological insulator junctions with Majorana modes Open
peer reviewed
View article: Induced superconducting correlations in the quantum anomalous Hall insulator
Induced superconducting correlations in the quantum anomalous Hall insulator Open
Inducing Cooper pairing in a thin ferromagnetic topological insulator in the quantum anomalous Hall state (called quantum anomalous Hall insulator, QAHI) is a promising way to realize topological superconductivity with associated chiral Ma…
View article: Aharonov-Bohm Interference and Phase-Coherent Surface-State Transport in Topological Insulator Rings
Aharonov-Bohm Interference and Phase-Coherent Surface-State Transport in Topological Insulator Rings Open
We present low-temperature magnetotransport measurements on selectively grown Sb2Te3-based topological insulator ring structures. These devices display clear Aharonov-Bohm oscillations in the conductance originating from phase-coherent tra…
View article: Conductance asymmetry in proximitized magnetic topological insulator junctions with Majorana modes
Conductance asymmetry in proximitized magnetic topological insulator junctions with Majorana modes Open
We theoretically discuss electronic transport via Majorana states in magnetic topological insulator-superconductor junctions with an asymmetric split of the applied bias voltage. We study normal-superconductor-normal (NSN) junctions made o…
View article: Aharonov-Bohm interference and phase-coherent surface-state transport in topological insulator rings
Aharonov-Bohm interference and phase-coherent surface-state transport in topological insulator rings Open
We present low-temperature magnetotransport measurements on selectively-grown Sb$_2$Te$_3$-based topological insulator ring structures. These topological insulator ring geometries display clear Aharonov-Bohm oscillations in the conductance…
View article: Robust Majorana bound states in magnetic topological insulator nanoribbons with fragile chiral edge channels
Robust Majorana bound states in magnetic topological insulator nanoribbons with fragile chiral edge channels Open
Magnetic topological insulators in the quantum anomalous Hall regime host ballistic chiral edge channels. When proximitized by an $s$-wave superconductor, these edge states offer the potential for realizing topological superconductivity an…
View article: Robust and Fragile Majorana Bound States in Proximitized Topological Insulator Nanoribbons
Robust and Fragile Majorana Bound States in Proximitized Topological Insulator Nanoribbons Open
Topological insulator (TI) nanoribbons with proximity-induced superconductivity are a promising platform for Majorana bound states (MBSs). In this work, we consider a detailed modeling approach for a TI nanoribbon in contact with a superco…
View article: Robust and fragile Majorana bound states in proximitized topological insulator nanoribbons
Robust and fragile Majorana bound states in proximitized topological insulator nanoribbons Open
Topological insulator (TI) nanoribbons with proximity-induced superconductivity are a promising platform for Majorana bound states (MBSs). In this work, we consider a detailed modeling approach for a TI nanoribbon in contact with a superco…
View article: First-principles-based screening method for resistivity scaling of anisotropic metals
First-principles-based screening method for resistivity scaling of anisotropic metals Open
The resistivity scaling of metals is a crucial limiting factor for further downscaling of interconnects in nanoelectronic devices that affects signal delay, heat production, and energy consumption. Here, we generalize a commonly considered…
View article: Probing Edge State Conductance in Ultra‐Thin Topological Insulator Films
Probing Edge State Conductance in Ultra‐Thin Topological Insulator Films Open
Quantum spin Hall (QSH) insulators have unique electronic properties, comprising a band gap in their 2D interior and 1D spin‐polarized edge states in which current flows ballistically. In scanning tunneling microscopy (STM), the edge state…
View article: Microwave sensing of Andreev bound states in a gate-defined superconducting quantum point contact
Microwave sensing of Andreev bound states in a gate-defined superconducting quantum point contact Open
We use a superconducting microresonator as a cavity to sense absorption of microwaves by a superconducting quantum point contact defined by surface gates over a proximitized two-dimensional electron gas. Renormalization of the cavity frequ…
View article: Probing edge state conductance in ultra-thin topological insulator films
Probing edge state conductance in ultra-thin topological insulator films Open
Quantum spin Hall (QSH) insulators have unique electronic properties, comprising a band gap in their two-dimensional interior and one-dimensional spin-polarized edge states in which current flows ballistically. In scanning tunneling micros…
View article: Gate-induced decoupling of surface and bulk state properties in selectively-deposited Bi$_2$Te$_3$ nanoribbons
Gate-induced decoupling of surface and bulk state properties in selectively-deposited Bi$_2$Te$_3$ nanoribbons Open
Three-dimensional topological insulators (TIs) host helical Dirac surface states at the interface with a trivial insulator. In quasi-one-dimensional TI nanoribbon structures the wave function of surface charges extends phase-coherently alo…
View article: Report on 2104.03373v2
Report on 2104.03373v2 Open
Three-dimensional topological insulators (TIs) host helical Dirac surface states at the interface with a trivial insulator.In quasi-one-dimensional TI nanoribbon structures the wave function of surface charges extends phase-coherently alon…