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Ying Ran Weyl semi-metal is a novel band-structure in three dimension which involves two component Dirac dispersion. It has been used to describe neutrinos in the high energy context and has been proposed to exist condensed matter systems such as pyrochlore iridates. In this talk I will focus on its novel response to an external magnetic field. Striking experimental effects will be discussed which can be used as intrinsic signatures to detect the Weyl semi-metal phase in materials.
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