13 citations · 71 across the 15 of their papers we have counts for
15 papers
Flux-tunable global and local superconductivity in a topological insulator nano-SQUID
Ella Nikodem, Jakob Schluck, Michał Papaj +5
Topological systems are defined by global properties that enforce the existence of local boundary modes. Three-dimensional topological insulators (TIs) were among the earliest prop…
Reply to the Comment by Tikhonov and Khrapai on "Long-range crossed Andreev reflection in a topological insulator nanowire proximitized by a superconductor"
Junya Feng, Henry F. Legg, Mahasweta Bagchi +3
The comment (arXiv:2505.23490) fails to identify any scientific errors and its central arguments actually support the main conclusions of our publication [Nat. Phys. 21, 708 (2025)…
Quasiparticle interference on the surface of BiSe terminated (PbSe)(BiSe)
Mahasweta Bagchi, Philipp Rüßmann, Gustav Bihlmayer +3
Among the family of topological superconductors derived from {\BiSe}, is unique in its surface termination of…
Tunable superconducting diode effect in a topological nano-SQUID
Ella Nikodem, Jakob Schluck, Max Geier +6
A Josephson diode passes current with zero resistance in one direction but is resistive in the other direction. While such an effect has been observed in several platforms, a large…
Topological Insulator nano-SQUID: Flux-tunable platform for topological superconductivity
Ella Nikodem, Jakob Schluck, Henry F. Legg +5
Many efforts have been made in the past decade to realize topological superconductivity using superconducting proximity effect, but an ideal platform is still lacking. A 3D topolog…
Characterizing the chemical potential disorder in the topological insulator (BiSb)Te thin films
Jens Brede, Mahasweta Bagchi, Adrian Greichgauer +6
We use scanning tunneling microscopy and spectroscopy under ultra-high vacuum and down to 1.7 K to study the local variations of the chemical potential on the surface of the topolo…
Probing the spin polarization of an Anderson impurity
Mahasweta Bagchi, Tfyeche Y. Tounsi, Affan Safeer +6
We report spin-polarized scanning tunneling microscopy measurements of an Anderson impurity system in MoS mirror twin boundaries, where both the quantum confined impurity sta…
Long-range crossed Andreev reflection in topological insulator nanowires proximitized by a superconductor
Junya Feng, Henry F. Legg, Mahasweta Bagchi +3
Crossed Andreev reflection (CAR) is a nonlocal transport phenomenon that creates/detects Cooper-pair correlations between distant places. It is also the basis of Cooper-pair splitt…
Tunneling spectroscopy of topological insulator Josephson junctions
Jakob Schluck, Ella Nikodem, Anton Montag +4
In the seminal proposal by Fu and Kane, the superconducting proximity effect is used to realize topological superconductivity in the topological surface state (TSS) of a 3D topolog…
Phonon thermal Hall effect in charge-compensated topological insulators
Rohit Sharma, Mahasweta Bagchi, Yongjian Wang +2
From a systematic study of thermal and charge transport in various single crystals of compensated topological insulators we identify the evolution of a large low-temperature therma…
Rotation of gap nodes in the topological superconductor Cu(PbSe)(BiSe)
Mahasweta Bagchi, Jens Brede, Aline Ramires +1
Among the family of odd-parity topological superconductors derived from , (…
Observability of superconductivity in Sr-doped Bi2Se3 at the surface using scanning tunneling microscope
Mahasweta Bagchi, Jens Brede, Yoichi Ando
The superconducting materials family of doped Bi2Se3 remains intensively studied in the field of condensed matter physics due to strong experimental evidence for topologically non-…
The Vertical Position of Sr Dopants in the SrBiSe Superconductor
You-Ron Lin, Mahasweta Bagchi, Serguei Soubatch +6
The discovery of topological superconductivity in doped BiSe made this class of materials highly important for the field of condensed matter physics. However, the structura…
Crystal structure and distortion of superconducting CuBiSe
Tobias Fröhlich, Zhiwei Wang, Mahasweta Bagchi +3
The crystal structure of the candidate topological superconductor CuBiSe was studied by single-crystal neutron diffraction using samples obtained by inserting the Cu do…
Large positive magneto-conductivity at microwave frequencies in the compensated topological insulator BiSbTeSe2
Mahasweta Bagchi, Lea Pitz-Paal, Christoph P. Grams +6
The bulk electronic properties of compensated topological insulators are strongly affected by the self-organized formation of charge puddles at low temperature, but their response…