Finite-size and pressure effects in YBa_2Cu_4O_8 probed by magnetic field penetration depth measurements

R. Khasanov, T. Schneider, J. Karpinski +1

We explore the combined pressure and finite-size effects on the in-plane penetration depth λ_{ab} in YBa_2Cu_4O_8. Even though this cuprate is stoichiometric the finite-size scalin…