Evidence for a quantum phase transition in Pr2-xCe(x)CuO4-delta from transport measurements.
The doping and temperature dependences of the Hall coefficient, R(H), and ab-plane resistivity in the normal state down to 350 mK is reported for oriented films of the electron-doped high-T(c) superconductor Pr(2-x)Ce(x)CuO(4-delta). The doping dependences of beta (rho=rho(0)+ATbeta) and R(H) (at 350 mK) suggest a quantum phase transition at a critical doping near x=0.165.
Dagan
Y
Y
Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
Qazilbash
M M
MM
Hill
C P
CP
Kulkarni
V N
VN
Greene
R L
RL