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The structural, magnetotransport, and angle-resolved photoemissionspectroscopy (ARPES) of Ag-doped Bi2Se3 single crystals are presented.Temperature dependent resistivity exhibits metallic behavior with a slopechange above 200 K for Ag-doped Bi2Se3. The magnetoresistance shows positivequadratic dependence at low fields satisfying Kohler's rule. Hall resistivitymeasurement shows that electrons are dominant charge carriers. Furthermore,these results agree well with the ARPES spectra observed at T = 20 K, where theFermi level lies inside the bulk conduction band. The Dirac point of thetopological surface states is shifted toward higher binding energy (~ 0.12 eV)for Ag-doped samples as compared to pristine Bi2Se3.

Electronic Transport Studies of Ag-doped Bi2Se3 Topological Insulator