120 citations · 519 across the 18 of their papers we have counts for
18 papers
Equivalence of pseudogap and pairing energy in a cuprate high-temperature superconductor
Jiasen Niu, Maialen Ortego Larrazabal, Thomas Gozlinski +8
The pseudogap stands out in the phase diagram of the cuprate high-temperature superconductors because its origin and relationship to superconductivity remain elusive. The origin of…
Signatures of Amorphous Shiba State in FeTeSe
Jinwon Lee, Sanghun Lee, Andreas Kreisel +7
The iron-based superconductor FeTeSe is a peculiar material: it hosts a surface state with a Dirac dispersion, is a putative topological superconductor hosting Ma…
Direct visualization of quasiparticle concentration around superconducting vortices
Jian-Feng Ge, Koen M. Bastiaans, Jiasen Niu +3
Bogoliubov quasiparticles play a crucial role in understanding the behavior of a superconductor, and in achieving reliable operations of superconducting quantum circuits. Diagnosis…
Why shot noise does not generally detect pairing in mesoscopic superconducting tunnel junctions
Jiasen Niu, Koen M. Bastiaans, Jianfeng Ge +10
The shot noise in tunneling experiments reflects the Poissonian nature of the tunneling process. The shot noise power is proportional to both the magnitude of the current and the e…
Puddle formation, persistent gaps, and non-mean-field breakdown of superconductivity in overdoped (Pb,Bi)2Sr2CuO6+δ
Willem O. Tromp, Tjerk Benschop, Jian-Feng Ge +14
The cuprate high-temperature superconductors exhibit many unexplained electronic phases, but it was often thought that the superconductivity at sufficiently high doping is governed…
Single-electron charge transfer into putative Majorana and trivial modes in individual vortices
Jian-Feng Ge, Koen M. Bastiaans, Damianos Chatzopoulos +6
Majorana bound states are putative collective excitations in solids that exhibit the self-conjugate property of Majorana fermions - they are their own antiparticles. In iron-based…
Direct evidence for Cooper pairing without a spectral gap in a disordered superconductor above
Koen M. Bastiaans, Damianos Chatzopoulos, Jian-Feng Ge +9
The idea that preformed Cooper pairs could exist in a superconductor above its zero-resistance state has been explored for unconventional, interface, and disordered superconductors…
Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor
Damianos Chatzopoulos, Doohee Cho, Koen M. Bastiaans +7
By using scanning tunneling microscopy (STM) we find and characterize dispersive, energy-symmetric in-gap states in the iron-based superconductor $\mathrm{FeTe}_{0.55}\mathrm{Se}_{…
Imaging doubled shot noise in a Josephson scanning tunneling microscope
K. M. Bastiaans, D. Cho, D. Chatzopoulos +3
We have imaged the current noise with atomic resolution in a Josephson scanning tunneling microscope with a Pb-Pb junction. By measuring the current noise as a function of applied…
A strongly inhomogeneous superfluid in an iron-based superconductor
D. Cho, K. M. Bastiaans, D. Chatzopoulos +2
Among the mysteries surrounding unconventional, strongly correlated superconductors is the possibility of spatial variations in their superfluid density. We use atomic-resolution J…
Definition of design guidelines, construction and performance of an ultra-stable scanning tunneling microscope for spectroscopic imaging
Irene Battisti, Gijsbert Verdoes, Kees van Oosten +2
Spectroscopic-imaging scanning tunneling microscopy is a powerful technique to study quantum materials, with the ability to provide information about the local electronic structure…
Charge trapping and super-Poissonian noise centers in a cuprate high-temperature superconductor
K. M. Bastiaans, D. Cho, T. Benschop +7
The electronic properties of cuprate high temperature superconductors in their normal state are very two-dimensional: while transport in the ab plane is perfectly metallic, it is i…
Amplifier for scanning tunneling microscopy at MHz frequencies
K. M. Bastiaans, T. Benschop, D. Chatzopoulos +4
Conventional scanning tunneling microscopy (STM) is limited to a bandwidth of circa 1kHz around DC. Here, we develop, build and test a novel amplifier circuit capable of measuring…
Nanofabricated tips for device-based scanning tunneling microscopy
Maarten Leeuwenhoek, Richard A. Norte, Koen M. Bastiaans +5
We report on the fabrication and performance of a new kind of tip for scanning tunneling microscopy. By fully incorporating a metallic tip on a silicon chip using modern micromachi…
Robust procedure for creating and characterizing the atomic structure of scanning tunneling microscope tips
Sumit Tewari, Koen M. Bastiaans, Milan P. Allan +1
Scanning tunneling microscopes (STM) are used extensively for studying and manipulating matter at the atomic scale. In spite of the critical role of the STM tip, the control of the…
Poor electronic screening in lightly doped Mott insulators observed with scanning tunneling microscopy
Irene Battisti, Vitaliy Fedoseev, Koen M. Bastiaans +4
The effective Mott gap measured by scanning tunneling microscopy (STM) in the lightly doped Mott insulator differs greatly from values repor…
Universality of pseudogap and emergent order in lightly doped Mott insulators
Irene Battisti, Koen M. Bastiaans, Vitaly Fedoseev +8
It is widely believed that high-temperature superconductivity in the cuprates emerges from doped Mott insulators. The physics of the parent state seems deceivingly simple: The hopp…
Probing the Nuclear Spin-Lattice Relaxation Time at the Nanoscale
J. J. T. Wagenaar, A. M. J. den Haan, J. M. de Voogd +9
Nuclear spin-lattice relaxation times are measured on copper using magnetic resonance force microscopy performed at temperatures down to 42 mK. The low temperature is verified by c…