202 citations · 1.7k across the 43 of their papers we have counts for
15 papers · 1 filter
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…
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…
Superconducting NbRuB derived through the fragment formalism
Weiwei Xie, Huixia Luo, K. Baroudi +3
We employ the chemical fragment formalism to perform a targeted superconductor search in the Nb-Ru-B system, yielding the orthorhombic metal-rich boride NbRuB, which displays BCS-l…
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…
Polytypism, polymorphism and superconductivity in TaSe2-xTex
Huixia Luo, Weiwei Xie, Jing Tao +6
Polymorphism in materials often leads to significantly different physical properties - the rutile and anatase polymorphs of TiO2 are a prime example. Polytypism is a special type o…
Observation of Fermi Arc Surface States in a Topological Metal: A New Type of 2D Electron Gas beyond Z2 Topological Insulators
Su-Yang Xu, Chang Liu, Satya K. Kushwaha +15
In a topological insulator, it is the electrons on the surface or edge that carry the signature of topology. Recently, a novel topological state has been proposed in metals or semi…
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…
A large new family of filled skutterudites stabilized by electron count
Huixia Luo, Jason W. Krizan, Lukas Muechler +6
Based on the interplay of theory and experiment, a large new family of filled group 9 (Co, Rh and Ir) skutterudites is designed and synthesized. The new materials fill the empty ca…
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…
A new material for probing spin-orbit coupling in Iridates
Brendan F. Phelan, Jason Krizan, Weiwei Xie +2
We report the structure and magnetic properties of a new iridate compound, SrxLa11-xIr4O24, where the d-electron count of Ir and therefore its number of unpaired electrons can be t…