202 citations · 1.7k across the 43 of their papers we have counts for
43 papers
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…
Low-temperature high-frequency dynamic magnetic susceptibility of classical spin-ice DyTiO
S. Teknowijoyo, K. Cho, E. I. Timmons +4
Radio-frequency (14.6 MHz) AC magnetic susceptibility, , of \dytio\ was measured using a self-oscillating tunnel-diode resonator. Measurements were made with the e…
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…
Imaging electronic states on topological semimetals using scanning tunneling microscopy
Andras Gyenis, Hiroyuki Inoue, Sangjun Jeon +12
Following the intense studies on topological insulators, significant efforts have recently been devoted to the search for gapless topological systems. These materials not only broa…
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…
Temperature-field phase diagram of extreme magnetoresistance in lanthanum monopnictides
F. F. Tafti, Q. D. Gibson, S. K. Kushwaha +3
The recent discovery of extreme magnetoresistance in LaSb introduced lanthanum monopnictides as a new platform to study topological semimetals (TSMs). In this work we report the di…
Differences in chemical doping matter - Superconductivity in Ti1-xTaxSe2 but not in Ti1-xNbxSe2
Huixia Luo, Weiwei Xie, Jing Tao +10
We report that 1T-TiSe2, an archetypical layered transition metal dichalcogenide, becomes superconducting when Ta is substituted for Ti but not when Nb is substituted for Ti. This…
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…
Superconductivity in the Niobium-rich compound Nb5Se4
T. Klimczuk, K. Baroudi, J. W. Krizan +2
The niobium rich selenide compound Nb5Se4 was synthesized at ambient pressure by high-temperature solid-state reaction in a sealed Ta tube. Resistivity and heat capacity measuremen…
NaCaNi2F7: A frustrated high temperature pyrochlore antiferromagnet with S=1 Ni2+
J. W. Krizan, R. J. Cava
NaCaNiF is an insulating, frustrated ABF pyrochlore with magnetic S = 1 Ni on the pyrochlore B site. Non-magnetic Na and Ca are disordered on the A-site.…
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…
A single crystal Co2+ fluoride pyrochlore antiferromagnet
J. W. Krizan, R. J. Cava
We report the crystal growth, crystal structure and basic magnetic properties of a new cobalt-based pyrochlore, NaSrCoF. Na and Sr are completely disordered on the non-magn…
Lifshitz transition and van Hove singularity in a Topological Dirac Semimetal
Su-Yang Xu, Chang Liu, I. Belopolski +20
A topological Dirac semimetal is a novel state of quantum matter which has recently attracted much attention as an apparent 3D version of graphene. In this paper, we report critica…