Negative Hopping Magnetoresistance and Dimensional Crossover in Lightly Doped Cuprate Superconductors

Valeri N. Kotov, Oleg P. Sushkov, M. B. Silva Neto +2

We show that, due to the weak ferromagnetism of La${}_{2-x}$Sr${}_x$CuO${}_4$, an external magnetic field leads to a dimensional crossover 2D $\to$ 3D for the in-plane transport. The cro…