Journal
PHYSICAL REVIEW LETTERS
Volume 88, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.88.247001
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We have investigated the pressure effect on T-c and the Hall coefficient in the static stripe-ordered phase of La1.48Nd0.4Sr0.12CuO4 crystal under hydrostatic pressure. We found a dramatic change of the Hall coefficient and an abrupt increase of T-c at low pressure of about 0.1 GPa. The results are indicative of a transition from one- to two-dimensional charge transport, associated with the suppression of low-temperature-tetragonal (LTT) phase. From the uniaxial pressure measurements it turns out that the observed critical change is induced primarily due to the in-plane compression of the CuO2 planes which would make the pinning potential of the LTT lattice distortions weaker.
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