Abstract
We report the observation of giant negative anisotropic magnetoresistance and planar Hall effect in superconducting topological insulator Sr0.06Bi2Se3. It is found that giant anisotropic magnetoresistance and planar Hall effect with non-zero transverse voltage are developed by tilting the in-plane magnetic field away from the direction of the electrical current. Quantitative analyses of the measured data suggest that the observed anisotropic magnetoresistance and planar Hall effect originate from the chiral anomaly behavior of the material. The large anisotropic magnetoresistance and planar Hall effect demonstrate that this material has potential to be utilized in magnetoresistive devices with low power consumption.
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