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We performed angle resolved photoemission spectroscopy (ARPES) experiments on electron doped cuprates Pr0.85LaCe0.15CuO4 (PLCCO) and Nd1.85Ce0.15CuO4 (NCCO). Critical temperatures (Tc) of PLCCO and NCCO are similar but PLCCO has weaker Fermi surface curvature than NCCO. As the ionic radius of Pr and La is larger than that of Nd, this result is inconsistent with the earlier view that chemical pressure...
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