It has recently been demonstrated that it is possible to open a gap in magnetic Weyl semimetal, while preserving the chiral anomaly along with charge conservation and translational symmetries, which all protect gapless nodes weakly interacting semimetal. The resulting state was shown be nontrivial generalization of nonabelian fractional quantum Hall liquid three dimensions. Here we point out se...

The discovery of extreme magnetoresistance (XMR) in non-magnetic materials attracted attention to the WTe 2 semimetal. We have carried out studies a tungsten ditelluride single crystal magnetic field range up 14 T. Magnetoresistance increased with increasing following near quadratic law without saturation. Shubnikov-de Haas oscillations were observed. Four fundamental frequencies found spectrum...

We have observed a distinct surface phase transition for an important class of colossal magnetoresistive materials, La0.65D0.35MnO3 (with D = Sr, Pb) occurring in a surface layer compositionally different from the bulk. The surface phase transition occurs around 240 K compared to 350 K for the bulk and is fundamentally different. In the bulk, a ferromagnetic metal to paramagnetic ‘bad metal’ oc...

Ferromagnetism was recently observed at unexpectedly high temperatures in La-doped CaB6. The starting point of all theoretical proposals to explain this observation is a semimetallic electronic structure calculated for CaB6 within the local density approximation. Here we report the results of parameter-free quasiparticle calculations of the single-particle excitation spectrum which show that Ca...

We investigate spontaneous entanglement of two qubits mediated by nonreciprocal surface plasmon polaritons (SPPs) in a Weyl semimetal. In the absence external magnetic fields, topology semimetal even gives rise to SPPs that are topologically protected and reside inside photonic gap. utilize this SPP as mediator spatially separated qubits. Our main findings (1) better quantum than reciprocal one...

Ti2O3 exhibits a unique metal-insulator transition (MIT) at approximately 450 K over wide temperature range of ~ 150 K. This broad MIT accompanied by lattice deformation differs from the sharp MITs observed in most other transition-metal oxides. A long-standing issue is determining role electron-electron correlation electronic structure and Ti2O3. However, lack information about band has hinder...

Numerous nodal-line semimetal candidates have been predicted and experimentally examined. To realize a genuine semimetal, the Dirac nodes must be robust against spin-orbit coupling lie close to Fermi level so as allow for manifestation of novel properties. By performing band structure calculations angle-resolved photoemission measurements, direct evidence is provided here realization in LaSbTe....

We investigate electron tunneling through atomically thin layers of hexagonal boron nitride (hBN). Metal (Cr/Au) and semimetal (graphite) counter-electrodes are employed. While the direct tunneling resistance increases nearly exponentially with barrier thickness as expected, the thicker junctions also exhibit clear signatures of Coulomb blockade, including strong suppression of the tunnel curre...

Todd Schumann, Sefaattin Tongay, Arthur F. Hebard Department of Physics, University of Florida, Gainesville FL 32611 This article demonstrates the formation of Schottky diodes on silicon (Si), gallium arsenide (GaAs), and 4H-silicon carbide (4H-SiC) using the semimetal graphite. The forward bias characteristics follow thermionic emission theory, and the extracted Schottky barrier heights closel...