Monday, March 18, 2013

1303.3865 (Z. Guguchia et al.)

Tuning the static spin-stripe phase and superconductivity in
La_(2-x)Ba_xCuO_4 (x = 1/8) by hydrostatic pressure
   [PDF]

Z. Guguchia, A. Maisuradze, G. Ghambashidze, R. Khasanov, A. Shengelaya, H. Keller
Magnetization and muon spin rotation experiments were performed in La_(2-x)Ba_xCuO_4 (x = 1/8) as a function of hydrostatic pressure up to p = 2.2 GPa. It was found that the magnetic volume fraction of the static stripe phase strongly decreases linearly with pressure, while the superconducting volume fraction increases by the same amount. This demonstrates competition between superconductivity and static magnetic order in the stripe phase of La_1.875Ba_0.125CuO_4 and that these phenomena occur in mutually exclusive spatial regions.
View original: http://arxiv.org/abs/1303.3865

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