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Recent experimental evidence for Weyl fermions in topological semimetals has attracted considerable attention. These materials are three-dimensional analogue of graphene. The present work is motivated by the recent prediction of Weyl semi-metallic phase in Bi1-xSbx alloys. In this paper we present the electronic transport properties studied under high applied magnetic fields in Bi0.96Sb0.04 alloys. The sample exhibits extremely high magneto-resistance; MR(5 K, 8 T) = 9.8×104 %. This value is comparable to the MR observed in recently discovered other members of these emergent materials. Most importantly, this composition shows large MR at room temperature, MR (300 K, 8 T) = 435%, which is almost twice to that observed in Dirac semimetal Cd3As2 (= 200 % at 14.5 T) and Weyl semimetal NbP (= 250% at 9 T). We also discuss single crystal growth technique as well as Hall measurement data. [ABSTRACT FROM AUTHOR]

In the present paper, we have observed the possible superconductivity in polycrystalline NbP compound. This belongs to the so called Weyl Semimetal family where there is band crossing and linear dispersion point near the Fermi level. Critical temperature calculated from the resistivity measurement is found near 7. 5 K. Superconductivity is also confirmed from the magnetization measurement. In the normal state, this sample shows significant magnetoresistance. [ABSTRACT FROM AUTHOR]