K. E. Avers
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View article: Magnetocrystalline Anisotropy and 3D Hopping Conduction at the Surface of FeSb2
Magnetocrystalline Anisotropy and 3D Hopping Conduction at the Surface of FeSb2 Open
Motivated by the recent discovery of metallic surface states in the d-electron Kondo insulator candidates FeSi and FeSb2, along with some recent reports of magnetic correlations in the surface transport properties of FeSi, we have investig…
View article: Dilute Paramagnetism and Non-Trivial Topology in Quasicrystal Approximant Fe4Al13
Dilute Paramagnetism and Non-Trivial Topology in Quasicrystal Approximant Fe4Al13 Open
A very fundamental property of both weakly and strongly interacting materials is the nature of their magnetic response. In this work, we detail the growth of crystals of the quasicrystal approximant Fe4Al13 with an Al flux solvent method. …
View article: Quantum Critical Scaling in Quasi-One-Dimensional YbFe$_5$P$_3$
Quantum Critical Scaling in Quasi-One-Dimensional YbFe$_5$P$_3$ Open
We report measurements of the low temperature magnetization $M$ and specific heat $C$ as a function of temperature and magnetic field of the quasi-one-dimensional spin chain, heavy fermion compound YbFe$_5$P$_3$, which resides close to a q…
View article: Quasi-two-dimensional Antiferromagnetic Spin Fluctuations in the Spin-triplet Superconductor Candidate CeRh$_2$As$_2$
Quasi-two-dimensional Antiferromagnetic Spin Fluctuations in the Spin-triplet Superconductor Candidate CeRh$_2$As$_2$ Open
The tetragonal heavy-fermion superconductor CeRh$_2$As$_2$ ($T_{\rm c}=0.3$ K) exhibits an exceptionally high critical field of 14 T for $\textbf{B} \parallel \textbf{c}$. It undergoes a field-driven first-order phase transition between su…
View article: Disordered 2D ferromagnetism at the surface of FeSi
Disordered 2D ferromagnetism at the surface of FeSi Open
FeSi is a curious example of a $d$-electron system that manifests many of the same phenomena associated with $f$-electron Kondo insulators, including conducting surface states with potentially non-trivial topology. Here we investigate the …
View article: Extraordinary Bulk Insulating Behavior in the Strongly Correlated Materials FeSi and FeSb$_2$
Extraordinary Bulk Insulating Behavior in the Strongly Correlated Materials FeSi and FeSb$_2$ Open
4$f$ electron-based topological Kondo insulators have long been researched for their potential to conduct electric current via protected surface states, while simultaneously exhibiting unusually robust insulating behavior in their interior…
View article: Effects of the Order Parameter Anisotropy on the Vortex Lattice in UPt3
Effects of the Order Parameter Anisotropy on the Vortex Lattice in UPt3 Open
We have used small-angle neutron scattering to determine the vortex lattice phase diagram in the topological superconductor UPt 3 for the applied magnetic field along the crystalline c -axis. A triangular vortex lattice is observed through…
View article: Fingerprinting triangular-lattice antiferromagnet by excitation gaps
Fingerprinting triangular-lattice antiferromagnet by excitation gaps Open
CeCd$_3$As$_3$ is a rare-earth triangular-lattice antiferromagnet with large\ninter-layer separation. Our field-dependent heat capacity measurements at\ndilution fridge temperatures allow us to trace the field-evolution of the\nspin-excita…