We have mounted a new manipulator that will allow cooling the sample to below 10K has been mounted . We are looking forward to testing it when the lab operations are allowed.
February 1, 2021
Welcome Honey Boban, a new PhD student! Honey will be working on magnetic 2D materials.
November 1, 2020
Welcome Mohammed Qahosh, a new PhD student! Mohammed will be working on magnetic topological insulators.
Summer and Fall 2020
The work in FZ Juelich has been affected by COVID restrictions. Fortunately, during the time when operations were allowed Tristan was able to complete the calibration of our laser spin-ARPES and perform interesting measurements.
We made successful measurements on Bharti’s twisted 2D layers at the MAESTRO beamline at ALS.
March 7, 2019
Our review paper on 3D topological insulators has been published in J. Phys. Condensed Matter: https://doi.org/10.1088%2F1361-648x%2Fab052c
January 31, 2019
Ewa’s paper on magnon kink in Fe has been published in Nature Communications: https://doi.org/10.1038/s41467-019-08445-1
January 2, 2019
Welcome Kevin Janßen, a new PhD student! Kevin has a joint appointment between PGI-6 and PGI-9.
September 17, 2018
We have collaborated on work on surface transport in topological insulators: https://www.nature.com/articles/s41535-018-0116-1
August 17, 2018
We have collaborated on work on electronic band structure of GaMnAs: https://www.nature.com/articles/s41467-018-05823-z
October 30, 2017
Welcome Yinshang Liu, a new PhD student! Yinshang holds a China Scholarship Council stipend, we are very happy he has chosen to work in our group.
October 4, 2017
Welcome Bharti Parashar, a new PhD student!
September 22, 2017
An upgrade of our ARPES system has been granted by the FZJ Board of Directors! We will have a new scanning lens, a 6 eV cw laser, and a 5K manipulator.
July 31, 2017
Mathias’ paper on ReS is published at NanoLetters: http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.7b00627
July 28, 2017
Two joint projects have been granted by the FZJ Board of Directors! Our group will have 2 additional PhD students starting in 2018 (joint with theory and quantum transport groups in Juelich).
One project (together with theory) is on antiferromagnetic spin dynamics.
Second project (together with quantum transport) is on transport and spectroscopy on novel topological phases.
June 12, 2017
We have collaborated on work on electrical resistance in topological insulators: https://www.nature.com/articles/ncomms15704
May 18, 2017
Pika’s paper is now at the arXiv server: https://arxiv.org/abs/1705.06464
April 21, 2017
Mathias’ has successfully defended his PhD thesis. Congratulations!
April 21, 2017
Markus’ paper on Bi1Te1 is published in Nature Communications: https://www.nature.com/articles/ncomms14976
February 15, 2017
Mathias’ paper Direct observation of the band gap transition in atomically thin ReS2 is now at the arXiv preprint server: https://arxiv.org/abs/1702.04176
October 28, 2016
Ewa’s paper on spin-orbit gaps and Fermi surface manipulation in Fe is accepted at PRX
Prof. Shigemasa Suga (Osaka University) is a visiting scientist in our lab in Juelich for 3 months
June 1 2016
Mathias paper is published in Scientific Reports
May 23, 2016
Markus successfully defended his PhD thesis entitled Band Structure Engineering in 3D Topological Insulators Investigated by Angle-Resolved Photoemission; the thesis/dissertation was awarded with the distinction (summa cum laude)
May 1 2016
Tristan Heider joins as a PhD student to work on topological insulators project
Apr 29 2016
Markus’ paper Bi1Te1: a dual topological insulator is now at the arXiv preprint server: https://arxiv.org/abs/1604.08886
Paper in collaboration with the group of Prof. Morgenstern (RWTH Aachen) entitled “Tuning the Dirac point to the Fermi level in the ternary topological insulator (Bi1−xSbx)2Te3” by J. Kellner et al. is published in Applied Physics Letters
Markus’ paper is published in Nature Communications
Upgraded delay-line detector (DLD) mounted in Dortmund
FeO-based spin polarimeter is now permanently integrated with the hemispherical analyzer in Juelich
Oct 13 2015
Mathias’s paper Quasi 2D electronic states with high spin-polarization in centrosymmetric MoS2 bulk crystals is now at the arXiv preprint server: http://arxiv.org/abs/1510.04101
Oct 9 2015
Markus’s paper Realization of a vertical topological p-n junction in epitaxial Sb2Te3/Bi2Te3 heterostructures is now at the arXiv preprint server: http://arxiv.org/abs/1510.02713
Our setup has been upgraded with a 6 eV laser-based setup (using Ti-Sa oscillator) which allows high resolution ARPES and spinARPES studies with light polarization control.
Prof. Shigemasa Suga (Osaka University) is a visiting scientist in our lab in Juelich
Pika joins the group as a PhD student within the EpiSpin project
Pika defended her Master’s Thesis: Laser-based ARPES study of spin-orbit coupling effects on solid state surfaces at University of Cologne, Faculty of Mathematics and Natural Sciences
Ewa was awarded HGF funding within Helmholtz Postdoctoral Programme for her project EpiSpin
Prof. Leyla Colakerol (Gebze Institute of Technology, Turkey) is vising our lab to characterize her samples