M. J. Graf
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View article: Magnetic dilution in the triangular lattice antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>NaYb</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Lu</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
Magnetic dilution in the triangular lattice antiferromagnet Open
The delafossite-like compound NaYbO$_2$ hosts a triangular lattice of Yb$^{3+}$ moments and is a promising candidate for the realization of a quantum spin liquid ground state -- an exotic, quantum-disordered magnetic phase featuring long-r…
View article: Ferroaxial density wave from intertwined charge and orbital order in rare-earth tritellurides
Ferroaxial density wave from intertwined charge and orbital order in rare-earth tritellurides Open
The discovery of the axial amplitude mode—commonly referred to as the Higgs mode—in charge density wave systems, such as rare-earth tritellurides, indicates the presence of a hidden order. A theoretical study proposed that this axial Higgs…
View article: Uncovering the Hidden Ferroaxial Density Wave as the Origin of the Axial Higgs Mode in RTe$_3$
Uncovering the Hidden Ferroaxial Density Wave as the Origin of the Axial Higgs Mode in RTe$_3$ Open
The recent discovery of an axial amplitude (Higgs) mode in the long-studied charge density wave (CDW) systems GdTe$_3$ and LaTe$_3$ suggests a heretofore unidentified hidden order. A theoretical study proposed that the axial Higgs results …
View article: Characterization of NbN films for superconducting nanowire single photon detectors
Characterization of NbN films for superconducting nanowire single photon detectors Open
Nanoscopic superconducting meander patterns offer great promise as a new class of cryogenic radiation sensors capable of single photon detection. To realize this potential, control of the superconducting properties on the nanoscale is impe…
View article: Radio-Frequency Manipulation of State Populations in an Entangled Fluorine-Muon-Fluorine System
Radio-Frequency Manipulation of State Populations in an Entangled Fluorine-Muon-Fluorine System Open
Entangled spin states are created by implanting muons into single crystal LiY0.95Ho0.05F4 to form a cluster of correlated, dipole-coupled local magnetic moments. The resulting states have well-defined energy levels allowing experimental ma…
View article: Quantum Disordered Ground State in the Heisenberg-Kitaev Candidate NaRuO2
Quantum Disordered Ground State in the Heisenberg-Kitaev Candidate NaRuO2 Open
The realization of spin liquid states born from the near-critical regime of the triangular lattice Hubbard model in inorganic materials remains a long-standing challenge, where weak spin-orbit coupling and other small perturbations often i…
View article: Novel magnetic ordering in LiYbO2 probed by muon spin relaxation
Novel magnetic ordering in LiYbO2 probed by muon spin relaxation Open
The stretched diamond lattice material LiYbO2 has recently been reported to exhibit two magnetic transitions ($T_{N1} = 1.1 K$, $T_{N2} = 0.45 K$) via specific heat, magnetization, and neutron scattering measurements [Bordelon et al., Phys…
View article: First demonstration of tuning between the Kitaev and Ising limits in a honeycomb lattice
First demonstration of tuning between the Kitaev and Ising limits in a honeycomb lattice Open
Recent observations of novel spin-orbit coupled states have generated interest in 4 d /5 d transition metal systems. A prime example is the state in iridate materials and α-RuCl 3 that drives Kitaev interactions. Here, by tuning …
View article: High-Frequency ac Susceptibility of Iron-Based Superconductors
High-Frequency ac Susceptibility of Iron-Based Superconductors Open
A microwave technique suitable for investigating the AC magnetic susceptibility of small samples in the GHz frequency range is presented. The method—which is based on the use of a coplanar waveguide resonator, within the resonator perturba…
View article: Race Driver Evaluation at a Driving Simulator using a physical Model and a Machine Learning Approach
Race Driver Evaluation at a Driving Simulator using a physical Model and a Machine Learning Approach Open
Professional race drivers are still superior to automated systems at controlling a vehicle at its dynamic limit. Gaining insight into race drivers' vehicle handling process might lead to further development in the areas of automated drivin…
View article: Complex vortex-antivortex dynamics in the magnetic superconductor EuFe$_{2}$(As$_{0.7}$P$_{0.3}$)$_{2}$
Complex vortex-antivortex dynamics in the magnetic superconductor EuFe$_{2}$(As$_{0.7}$P$_{0.3}$)$_{2}$ Open
We report on the investigation of the magnetic superconductor EuFe$_{2}$(As$_{0.7}$P$_{0.3}$)$_{2}$ based on muon-spin spectroscopy and ac magnetic susceptibility ($χ$) measurements. The dependence of the internal field at the muon site on…
View article: Radio-Frequency Manipulation of State Populations in an Entangled Fluorine-Muon-Fluorine System
Radio-Frequency Manipulation of State Populations in an Entangled Fluorine-Muon-Fluorine System Open
Entangled spin states are created by implanting muons into single crystal LiY0.95Ho0.05F4 to form a cluster of correlated, dipole-coupled local magnetic moments. The resulting states have well-defined energy levels allowing experimental ma…
View article: Evidence of a hidden flux phase in the topological kagome metal CsV$_3$Sb$_5$
Evidence of a hidden flux phase in the topological kagome metal CsV$_3$Sb$_5$ Open
Phase transitions governed by spontaneous time reversal symmetry breaking (TRSB) have long been sought in many quantum systems, including materials with anomalous Hall effect (AHE), cuprate high temperature superconductors, Iridates and so…
View article: Malignant Transformation Into Chondrosarcoma Of A Retroperitoneal Residual Mass After Chemotherapy For A Testicular Seminoma (Germinal Cell Tumor)
Malignant Transformation Into Chondrosarcoma Of A Retroperitoneal Residual Mass After Chemotherapy For A Testicular Seminoma (Germinal Cell Tumor) Open
Multiple myeloma is the second most common hematological disease characterized by uncontrollable cell proliferation of malignant plasma cells in the bone marrow.Evolution of multiple myeloma stems from asymptomatic precursor states of mult…
View article: Quasistatic antiferromagnetism in the quantum wells of SmTiO3/SrTiO3 heterostructures
Quasistatic antiferromagnetism in the quantum wells of SmTiO3/SrTiO3 heterostructures Open
High carrier density quantum wells embedded within a Mott insulating matrix present a rich arena for exploring unconventional electronic phase behavior ranging from non-Fermi-liquid transport and signatures of quantum criticality to pseudo…
View article: Spiral Modes and the Observation of Quantized Conductance in the Surface Bands of Bismuth Nanowires
Spiral Modes and the Observation of Quantized Conductance in the Surface Bands of Bismuth Nanowires Open
When electrons are confined in two-dimensional materials, quantum-mechanical transport phenomena and high mobility can be observed. Few demonstrations of these behaviours in surface spin-orbit bands exist. Here, we report the observation o…
View article: Observation of Quantized Conductance in the Surface Bands of Bismuth Nanowires
Observation of Quantized Conductance in the Surface Bands of Bismuth Nanowires Open
We report the experimental observation of quantized conductance by Rashba bands at the surface of 50-nm Bi nanowires. With increasing magnetic fields along the wire axis, the wires exhibit a stepwise increase of conductance with as many as…
View article: Comparative Study of Barotrauma Risk during Fish Passage through Kaplan Turbines
Comparative Study of Barotrauma Risk during Fish Passage through Kaplan Turbines Open
Rapid pressure changes in hydroelectric turbine flows can cause barotrauma that can be hazardous to the passage of fish, in particular migratory juvenile salmonids. Although numerous laboratory tests have evaluated the effect of rapid deco…