Photo (©) Radboud Universiteit/Dick van Aalst
40-TESLA PULSED MAGNET FOR NEUTRON DIFFRACTION
A 40-T pulsed magnet for single crystal elastic neutron scattering, featuring an unprecedented high duty cycle, now offers new opportunities to investigate magnetic systems down to 2 K at the Institut Laue Langevin (ILL) in Grenoble (France).
FARADAY BALANCE MAGNETOMETER AT LNCMI-G
Gabriel Seyfarth, LNCMI Grenoble. A new Faraday-balance magnetometer for low temperatures and high magnetic fields has been developed at LNCMI Grenoble. It has been designed to probe the sample magnetization. The determination of absolute values is possible via separate calibration measurements.
AN ULTRA-COMPACT LOW-TEMPERATURE SCANNING PROBE MICROSCOPE FOR MAGNETIC FIELDS ABOVE 30 T
Lisa Rossi, Lijnis Nelemans, Ben Bryant, HFML Nijmegen. Together with technicians and scientists from HFML Nijmegen, PhD student Lisa Rossi designed and built a scanning probe microscope (SPM) for operation at cryogenic temperatures in extremely high magnetic fields. It is the only one in the world that can measure in fields above 30 Tesla.
STRONG INTERACTION EFFECTS IN MoS2 LANDAU LEVELS
Jiangxiazi Lin, Ning Wang, Hong Kong University of Science and Technology and Benjamin Piot, LNCMI-Grenoble. Semiconducting two-dimensional transition-metal dichalcogenides (TMDCs) have been a recent hot research topic in physics, for their novel optical/electronic properties and potential applications.
A DROSOPHILA FOR WEYL PHYSICS: GdPtBi
C. Shekhar, MPI CPfS Dresden and Y. Skourski, HLD Dresden. In 1929, Hermann Weyl discovered that massless spin-1/2 particles are solutions of the Dirac equation. After many decades, these Weyl particles were finally experimentally revealed in 2015 in simple semimetallic materials such as TaAs. Weyl fermions are low-energy quasiparticle excitations in the vicinity of the unavoidable touching points of a valence band and a conduction band: these materials are “Weyl semimetals”.
ELECTRON-HOLE TUNNELING IN MOMENTUM SPACE REVEALED BY QUANTUM OSCILLATIONS
M. van Delft, S. Pezzini, T. Khouri, C. Müller, N. Hussey, S. Wiedmann, HFML Nijmegen. Researchers from Germany, USA, UK, and the HFML Nijmegen have found evidence for electron-hole tunneling in momentum space in the nodal-line semimetal HfSiS. This specific tunneling phenomenon is revealed in quantum oscillations of the electrical resistance at low temperatures and in high magnetic fields, and can be illustrated as a ‘figure-of-eight orbit’ enclosing one electron and one hole pocket.
PLANCKIAN DISSIPATION IN HIGH-TC SUPERCONDUCTORS
Cyril Proust, LNCMI-Toulouse and Louis Taillefer, University of Sherbrooke. Measuring the electrical resistance of a new material is often the first experiment that researchers do, but also often the last to be understood. Nevertheless, the temperature dependence of the electrical resistance gives essential information on the ground state of materials.
Electronic phases in high magnetic fields
Electrons are one of the fundamental constituents of solids, responsible for most of the important phenomena and applications in condensed matter physics. Therefore, understanding, controlling and manipulating electronic properties [...]
High magnetic fields for fundamental physics
Following the HIMAFUN workshop held in may 2017 in Toulouse, a review article has been published on Physics Report freely availaible here or DOI
QUANTUM CRITICALITY OF A SPIN-1/2 ANTIFERROMAGNETIC CHAIN
Zhe Wang, HZDR and S. Zherlitsyn, HLD Dresden Understanding quantum phase transitions, i.e., phase transitions at zero temperature driven by non-thermal parameters, has become one of the most significant [...]