Normal State: Experimental Facts

Journal of Low Temperature Physics

, Volume 95, Issue 1, pp 23-31

First online:

Charge dynamics in (La, Sr)2CuO4: from underdoping to overdoping

  • B. BatloggAffiliated withAT&T Bell Laboratories
  • , H. Y. HwangAffiliated withAT&T Bell Laboratories
  • , H. TakagiAffiliated withAT&T Bell Laboratories
  • , H. L. KaoAffiliated withAT&T Bell Laboratories
  • , J. KwoAffiliated withAT&T Bell Laboratories
  • , R. J. CavaAffiliated withAT&T Bell Laboratories

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The normal state transport properties (resistivity, Hall effect) of La2−xSrxCuO4 have been studied over wide ranges of Sr doping and temperature. The familiar T-linear resistivity and the strongly T dependent Hall effect RH(T) are found only near the optimal hole concentration (x ≈ 0.15–0.18). The charge dynamics changes significantly in the non-superconducting overdoped range with RH(T) becoming constant above a characteristic temperature T*, and p(T) ∝ Tn (n > 1; n ≈ 1.5±0.1). The temperature scale T*, decreasing with increasing hole concentration, provides a link between transport and magnetic properties.