1.3k citations · 1.9k across the 13 of their papers we have counts for
13 papers
Weyl nodes close to the Fermi energy in NbAs
M. Naumann, F. Arnold, Z. Medvecka +10
The noncentrosymmetric transition metal monopnictides NbP, TaP, NbAs and TaAs are a family of Weyl semimetals in which pairs of protected linear crossings of spin-resolved bands oc…
Orbital effect and weak localization physics in the longitudinal magnetoresistance of the Weyl semimetals NbP, NbAs, TaP and TaAs
M. Naumann, F. Arnold, M. D. Bachmann +5
Weyl semimetals such as the TaAs family (TaAs, TaP, NbAs, NbP) host quasiparticle excitations resembling the long sought after Weyl fermions at special band-crossing points in the…
Spatially modulated heavy-fermion superconductivity in CeIrIn5
Maja D. Bachmann, G. M. Ferguson, Florian Theuss +20
The ability to spatially modulate the electronic properties of solids has led to landmark discoveries in condensed matter physics as well as new electronic applications. Although c…
Superconducting Sweet-Spot in Microcrystalline Graphite Revealed by Point-Contact Spectroscopy
Frank Arnold, Jan Nyeki, John Saunders
In this letter we describe the observation of a magnetic field dependent electronic gap, suggestive of local superconductivity, in the point-contact spectrum of micro-crystalline g…
Resonant torsion magnetometry in anisotropic quantum materials
K. A. Modic, Maja D. Bachmann, B. J. Ramshaw +12
Unusual behavior of quantum materials commonly arises from their effective low-dimensional physics, which reflects the underlying anisotropy in the spin and charge degrees of freed…
Quasi two-dimensional Fermi surface topography of the delafossite PdRhO
Frank Arnold, Marcel Naumann, Seunghyun Khim +6
We report on a combined study of the de Haas-van Alphen effect and angle resolved photoemission spectroscopy on single crystals of the metallic delafossite PdRhO rounded off by…
Application of SQUIDs to low temperature and high magnetic field measurements - Ultra low noise torque magnetometry
Frank Arnold, Marcel Naumann, Thomas Lühmann +2
Torque magnetometry is a key method to measure the magnetic anisotropy and quantum oscillations in metals. In order to resolve quantum oscillations in sub-millimeter sized samples,…
On the search for the chiral anomaly in Weyl semimetals: The negative longitudinal magnetoresistance
R. D. dos Reis, M. O. Ajeesh, N. Kumar +6
Recently, the existence of massless chiral (Weyl) fermions has been postulated in a class of semi-metals with a non-trivial energy dispersion.These materials are now commonly dubbe…
Chiral Quasiparticles at the Fermi Surface of the Weyl Semimetal TaAs
Frank Arnold, Marcel Naumann, Shu-Chun Wu +6
Tantalum arsenide is a member of the non-centrosymmetric monopnictides, which are putative Weyl semimetals. In these materials, three-dimensional chiral massless quasiparticles, th…
Nearly-free electrons in a 5d delafossite oxide metal
Pallavi Kushwaha, Veronika Sunko, P. J. W. Moll +11
Understanding the role of electron correlations in strong spin-orbit transition-metal oxides is key to the realisation of numerous exotic phases including spin-orbit assisted Mott…
Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP
Frank Arnold, Chandra Shekhar, Shu-Chun Wu +15
Weyl semimetals (WSMs) are topological quantum states wherein the electronic bands linearly disperse around pairs of nodes, the Weyl points, of fixed (left or right) chirality. The…
Charge density waves in graphite; towards the magnetic ultra-quantum limit
F. Arnold, A. Isidori, E. Kampert +3
Graphite is a model system for the study of three-dimensional electrons and holes in the magnetic quantum limit, in which the charges are confined to the lowest Landau levels. We r…
Current Sensing Noise Thermometry: A fast practical solution to low temperature measurement
Andrew Casey, Frank Arnold, Lev V. Levitin +9
We describe the design and performance of a series of fast, precise current sensing noise thermometers. The thermometers have been fabricated with a range of resistances from 1.290…