26 citations · 91 across the 23 of their papers we have counts for
26 papers
Highly crystalline superconducting TiN resonators grown on thermally reconstructed sapphire
Thomas J. Smart, Marc Neis, Janine Lorenz +15
High quality crystalline growth of a thin film on sapphire requires sufficient substrate preparation, often achieved via the use of aggressive chemical cleaning. Direct thermal rec…
Proximitized Topological Insulator Charge Island Fabricated via In Situ Multi-Angle Stencil Lithography
Benedikt Frohn, Tobias Schmitt, Vanessa Serrano +7
Hybrid superconductor-topological insulator (TI) nanostructures constitute a promising material platform for exploring proximity-induced superconductivity in systems with topologic…
Kinetics-Driven Selective Stoichiometric Shift and Structural Asymmetry in Nanostructures for Hybrid Quantum Architectures
Abdur Rehman Jalil, Helen Valencia, Christoph Ringkamp +6
Advances in hybrid quantum architectures hinge on topological materials that can be synthesized with precise stoichiometric and structural control at the nanoscale. While $Bi_4Te_3…
Fabrication Optimization of Suspended Stencil Mask Lithography for Multi-Terminal Josephson Junctions
Justus Teller, Abdur Rehman Jalil, Florian Lentz +2
Stencil mask lithography is an advanced technique for fully in-situ fabricating Josephson junctions, which is increasingly being used for multi-terminal Josephson junctions. This s…
On-chip stencil lithography for superconducting qubits
Roudy Hanna, Sören Ihssen, Simon Geisert +22
Improvements in circuit design and more recently in materials and surface cleaning have contributed to a rapid development of coherent superconducting qubits. However, organic resi…
Controlling the magneto-transport properties of magnetic topological insulator thin films from Cr(BiSb)Te via molecular beam epitaxy
Jan Karthein, Jonas Buchhorn, Kaycee Underwood +5
In this work we present a systematic in-depth study of how we can alter the magneto-transport properties of magnetic topological insulator thin films by tuning the parameters of th…
Superconducting Diode Effect in Selectively-Grown Topological Insulator based Josephson Junctions
Gerrit Behner, Abdur Rehman Jalil, Detlev Grützmacher +1
The Josephson diode effect, where the critical current magnitude depends on its direction, arises when both time-reversal and inversion symmetries are broken - often achieved by a…
Superconductive coupling and Josephson diode effect in selectively-grown topological insulator based three-terminal junctions
Gerrit Behner, Abdur Rehman Jalil, Alina Rupp +3
The combination of an ordinary s-type superconductor with three-dimensional topological insulators creates a promising platform for fault-tolerant topological quantum computing cir…
Molecular order induced charge transfer in a C-topological insulator moiré heterostructure
Ram Prakash Pandeya, Konstantin P. Shchukin, Yannic Falke +9
We synthesize and spectroscopically investigate monolayer C on the topological insulator (TI) BiTe. This C/BiTe heterostructure is characterized by ex…
Topological insulator based axial superconducting quantum interferometer structures
Erik Zimmermann, Abdur Rehman Jalil, Michael Schleenvoigt +10
Nanoscale superconducting quantum interference devices (SQUIDs) are fabricated in-situ from a single BiSbTe nanoribbon that is defined using selective-area…
Single in situ Interface Characterization Composed of Niobium and a Selectively Grown (BiSb)Te Topological Insulator Nanoribbon
Kevin Janßen, Philipp Rüßmann, Sergej Liberda +14
With increasing attention in Majorana physics for possible quantum bit applications, a large interest has been developed to understand the properties of the interface between a …
Atomic diffusion-induced polarization and superconductivity in topological insulator-based heterostructures
Xian-Kui Wei, Abdur Rehman Jalil, Philipp Rüßmann +4
The proximity effect at a highly transparent interface of an s-wave superconductor (S) and a topological insulator (TI) provides a promising platform to create Majorana zero modes…
In-plane magnetic field driven conductance modulations in topological insulator kinks
Gerrit Behner, Kristof Moors, Yong Zhang +8
We present low-temperature magnetoconductance measurements on BiSbTeSe kinks with ribbon-shaped legs. The conductance displays a clear dependence on…
Induced Superconductivity in Hybrid Au/YBa2Cu3O7-x Electrodes on Vicinal Substrates
Irina I. Gundareva, Jose Martinez-Castro, F. Stefan Tautz +3
Superconducting electrodes are an integral part of hybrid Josephson junctions used in many applications including quantum technologies. We report on the fabrication and characteriz…
Quantum size effects in ultra-thin YBa2Cu3O7-x films
M. Lyatti, I. Gundareva, T. Röper +4
The d-wave symmetry of the order parameter with zero energy gap in nodal directions stands in the way of using high-temperature superconductors for quantum applications. We investi…
Aharonov-Bohm interference and phase-coherent surface-state transport in topological insulator rings
Gerrit Behner, Abdur Rehman Jalil, Dennis Heffels +9
We present low-temperature magnetotransport measurements on selectively-grown SbTe-based topological insulator ring structures. These topological insulator ring geometries…
Ballistic surface channels in fully in situ defined BiTe Josephson junctions with aluminum contacts
Daniel Rosenbach, Abdur R. Jalil, Tobias W. Schmitt +5
In this letter we report on the electrical transport properties of BiTe in a Josephson junction geometry using superconducting Al electrodes with a Ti interdiffusion barrie…
Supercurrent in BiTe Topological Material-Based Three-Terminal Junctions
Jonas Kölzer, Abdur Rehman Jalil, Daniel Rosenbach +6
In an in-situ prepared three-terminal Josephson junction based on the topological insulator BiTe and the superconductor Nb the transport properties are studied. The differe…
In-plane anisotropy of electrical transport in YTbBaCuO films
M. Lyatti, I. Kraiem, T. Röper +4
We fabricate high-quality c-axis oriented epitaxial YBaCuO films with 15% of yttrium atoms replaced by terbium (YTBCO) and study their electrical properties. The Tb…
Gate-induced decoupling of surface and bulk state properties in selectively-deposited BiTe nanoribbons
Daniel Rosenbach, Kristof Moors, Abdur R. Jalil +9
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 wa…
In-plane magnetic field-driven symmetry breaking in topological insulator-based three-terminal junctions
Jonas Kölzer, Kristof Moors, Abur R. Jalil +9
Topological surface states of three-dimensional topological insulator nanoribbons and their distinct magnetoconductance properties are promising for topoelectronic applications and…
Integration of topological insulator Josephson junctions in superconducting qubit circuits
Tobias W. Schmitt, Malcolm R. Connolly, Michael Schleenvoigt +16
The integration of semiconductor Josephson junctions (JJs) in superconducting quantum circuits provides a versatile platform for hybrid qubits and offers a powerful way to probe ex…
Quantum transport in topological surface states of BiTe nanoribbons
Daniel Rosenbach, Nico Oellers, Abdur Rehman Jalil +8
Quasi-1D nanowires of topological insulators are emerging candidate structures in superconductor hybrid architectures for the realization of Majorana fermion based quantum computat…
Phase-coherent loops in selectively-grown topological insulator nanoribbons
Jonas Kölzer, Daniel Rosenbach, Christian Weyrich +9
Universal conductance fluctuations and the weak antilocalization effect are defect structure specific fingerprints in the magnetoconductance that are caused by electron interferenc…