J. J. Ishikawa

Optical evidence for a Weyl semimetal state in pyrochlore Eu2Ir2O7

A Weyl semimetallic state with pairs of nondegenerate Dirac cones in three dimensions was recently predicted to occur in the antiferromagnetic state of the pyrochlore iridates. Here, we show that the THz optical conductivity and temperature dependence of the free carrier response in pyrochlore

Extremely Large Magnetoresistance in the Nonmagnetic Metal PdCoO_{2}

{\mathrm{Eu}}_{2}{\mathrm{Ir}}_{2}{\mathrm{O}}_{7}

Pressure-tuned insulator to metal transition in eu2ir2o7

match the predictions for a Weyl semimetal and suggest novel Dirac liquid behavior. The interband optical conductivity vanishes continuously at low frequencies signifying a semimetal. The metal-semimetal transition at

Continuous transition between antiferromagnetic insulator and paramagnetic metal in the pyrochlore iridate Eu2Ir2O7

{T}_{N}=110

Quadratic Fermi node in a 3D strongly correlated semimetal

K is manifested in the Drude spectral weight, which is independent of temperature in the metallic phase and decreases smoothly in the ordered phase. The temperature dependence of the free carrier weight below

Slater to Mott Crossover in the Metal to Insulator Transition of Nd 2 Ir 2 O 7

{T}_{N}

Orthogonal magnetization and symmetry breaking in pyrochlore iridate Eu2Ir2O7

is in good agreement with theoretical predictions for a Dirac material. The data yield a Fermi velocity

Experimental exploration of novel semimetal state in strong anisotropic Pyrochlore iridate Nd2lr2O7 under high magnetic field

{v}_{F}\ensuremath{\approx}4\ifmmode\times\else\texttimes\fi{}{10}^{7}

Spontaneous Hall Effect in the Spin Liquid Phase of Pr2Ir2O7

cm/s, a logarithmic renormalization scale

Determination of long-range all-in-all-out ordering of Ir4+moments in a pyrochlore iridate Eu2Ir2O7by resonant x-ray diffraction

{\mathrm{\ensuremath{\Lambda}}}_{L}\ensuremath{\approx}600