202 citations · 1.7k across the 43 of their papers we have counts for
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Stability of the Local Ni Electronic Structure to -site Disorder in the Pyrochlore Antiferromagnet NaCaNiF
M. F. DiScala, A. de la Torre, J. W. Krizan +5
NaCaNiF is a unique example of spin-1 Heisenberg antiferromagnet on the pyrochlore lattice, but the presence of Na/Ca -site disorder complicates the local…
Duality and domain wall dynamics in a twisted Kitaev chain
C. M. Morris, Nisheeta Desai, J. Viirok +9
The Ising chain in transverse field is a paradigmatic model for a host of physical phenomena, including spontaneous symmetry breaking, topological defects, quantum criticality, and…
Softening of breathing elastic mode and trigonal elastic mode in disordered pyrochlore magnet NaCaCoF
T. Watanabe, H. Kato, Y. Hara +2
Cobalt pyrochlore fluoride NaCaCoF is a disordered frustrated magnet composed of Co ions with an effective spin- magnetic moment and exhibits spin freez…
Magnetic interactions and spin dynamics in the bond-disordered pyrochlore fluoride NaCaCoF
J. Zeisner, S. A. Bräuninger, L. Opherden +9
We report high-frequency/high-field electron spin resonance (ESR) and high-field magnetization studies on single crystals of the bond-disordered pyrochlore NaCaCoF. Frequen…
Crystal Field Levels and Magnetic Anisotropy in the Kagome Compounds , , and
A. Scheie, M. Sanders, J. Krizan +4
We report the crystal field levels of several newly-discovered rare-earth kagome compounds: , , and . We…
SR study of spin freezing and persistent spin dynamics in NaCaNiF
Y. Cai, M. N. Wilson, A. M. Hallas +8
A new pyrochlore compound, NaCaNiF, was recently synthesized and has a single magnetic site with spin-1 Ni. We present zero field (ZF) and longitudinal field (LF) mu…
Continuum of quantum fluctuations in a three-dimensional Heisenberg magnet
K. W. Plumb, Hitesh J. Changlani, A. Scheie +7
Conventional crystalline magnets are characterized by symmetry breaking and normal modes of excitation called magnons with quantized angular momentum . Neutron scattering co…
Real-space investigation of short-range magnetic correlations in fluoride pyrochlores NaCaCoF and NaSrCoF with magnetic pair distribution function analysis
Benjamin A. Frandsen, Kate A. Ross, Jason W. Krizan +5
We present time-of-flight neutron total scattering and polarized neutron scattering measurements of the magnetically frustrated compounds NaCaCoF and NaSrCoF, which…
Single-ion properties of the = 1/2 XY antiferromagnetic pyrochlores, NaCoF ( Ca, Sr)
K. A. Ross, J. M. Brown, R. J. Cava +4
The antiferromagnetic pyrochlore material NaCaCoF is a thermal spin liquid over a broad temperature range (~ 140 K down to K), in which magnetic correlations be…
NaSrMn2F7, NaCaFe2F7, and NaSrFe2F7: novel single crystal pyrochlore antiferromagnets
M. B. Sanders, J. W. Krizan, K. W. Plumb +2
The crystal structures and magnetic properties of three previously unreported A2B2F7 pyrochlore materials, NaSrMn2F7, NaCaFe2F7, and NaSrFe2F7 are presented. In these compounds, ei…
3D Dirac cone carrier dynamics in Na3Bi and Cd3As2
G. S. Jenkins, C. Lane, B. Barbiellini +12
Optical measurements and band structure calculations are reported on 3D Dirac materials. The electronic properties associated with the Dirac cone are identified in the reflectivity…
Scalar Chiral Spin-1/2 Order on Kagome Lattices in Nd3Sb3Mg2O14
A. Scheie, M. Sanders, J. Krizan +3
We introduce with ideal kagome lattices of neodymium ions in ABC stacking. Thermodynamic measurements show a Curie-Weiss temperature of $Θ_{CW}=…
Spin freezing in the disordered pyrochlore magnet NaCaCoF: NMR studies and Monte-Carlo simulations
R. Sarkar, J. W. Krizan, F. Brückner +5
We present results of Na and F nuclear magnetic resonance (NMR) measurements on NaCaCoF, a frustrated pyrochlore magnet with a Curie-Weiss temperature, $T_{cw…
Synthesis, crystal structure, and magnetic properties of RE3Sb3Mg2O14 (RE=La, Pr, Sm, Eu, Tb, Ho): new 2D Kagome materials
Marisa B. Sanders, Kristen M. Baroudi, Jason W. Krizan +2
We present the crystal structures and magnetic properties of RE3Sb3Mg2O14 (La3Sb3Mg2O14, Pr3Sb3Mg2O14, Sm3Sb3Mg2O14, Eu3Sb3Mg2O14, Tb3Sb3Mg2O14, and Ho3Sb3Mg2O14), a family of nove…
Signature of the chiral anomaly in a Dirac semimetal: a current plume steered by a magnetic field
Jun Xiong, Satya K. Kushwaha, Tian Liang +4
In this talk, we describe recent experimental progress in detecting the chiral anomaly in the Dirac semimetal NaBi in the presence of a magnetic field. The chiral anomaly, whic…
Gold-Gold Bonding: The Key to Stabilizing the 19-Electron Ternary Phases LnAuSb (Ln = La-Nd and Sm) as New Dirac Semimetals
Elizabeth M. Seibel, Leslie M. Schoop, Weiwei Xie +5
We report a new family of ternary 111 hexagonal LnAuSb (Ln = La-Nd, Sm) compounds that, with a 19 valence electron count, has one extra electron compared to all other known LnAuZ c…
Static and dynamic XY-like short-range order in a frustrated magnet with exchange disorder
Kate A. Ross, Jason W. Krizan, Jose A. Rodriguez-Rivera +2
A single crystal of the Co2+ based pyrochlore NaCaCo2F7 was studied by inelastic neutron scattering. This frustrated magnet with quenched exchange disorder remains in a strongly co…
Anomalous conductivity tensor in the Dirac semimetal Na_3Bi
Jun Xiong, Satya Kushwaha, Jason Krizan +3
Na3Bi is a Dirac semimetal with protected nodes that may be sensitive to the breaking of time-reversal invariance in a magnetic field B. We report experiments which reveal that bot…
Bulk crystal growth and electronic characterization of the 3D Dirac Semimetal Na3Bi
Satya K. Kushwaha, Jason W. Krizan, Benjamin E. Feldman +11
High quality hexagon plate-like Na3Bi crystals with large (001) plane surfaces were grown from a molten Na flux. The freshly cleaved crystals were analyzed by low temperature scann…
Thermal Hall conductivity in the frustrated pyrochlore magnet Tb2Ti2O7
Max Hirschberger, Jason W. Krizan, R. J. Cava +1
In a ferromagnet, the spin excitations are the well-studied magnons. In frustrated quantum magnets, long-range magnetic order fails to develop despite a large exchange coupling bet…
Heat capacity anomaly at the quantum critical point of the Transverse Ising Magnet CoNb_2O_6
Tian Liang, S. M. Koohpayeh, J. W. Krizan +3
The transverse Ising magnet Hamiltonian describing the Ising chain in a transverse magnetic field is the archetypal example of a system that undergoes a transition at a quantum cri…
Superconducting properties and electronic structure of NaBi
S K Kushwaha, J W Krizan, Jun Xiong +5
Resistivity, dc magnetization, and heat capacity measurements are reported for superconducting NaBi. Tc, the electronic contribution to the specific heat γ, the ΔCp/γTc ratio, and…
A hierarchy of bound states in the 1D ferromagnetic Ising chain CoNbO investigated by high resolution time-domain terahertz spectroscopy
C. M. Morris, R. Valdés Aguilar, A. Ghosh +6
Kink bound states in the one dimensional ferromagnetic Ising chain compound CoNbO have been studied using high resolution time-domain terahertz spectroscopy in zero applied…