Magnetic-field dependence of the oxygen isotope effect on the magnetic penetration depth of hole-doped cuprate superconductors

Rapid Communication

Magnetic-field dependence of the oxygen isotope effect on the magnetic penetration depth of hole-doped cuprate superconductors

R. Khasanov, A. Shengelaya, D. Di Castro, D. G. Eshchenko, I. M. Savić, K. Conder, E. Pomjakushina, J. Karpinski, S. Kazakov, and H. Keller

Phys. Rev. B 75, 060505(R) – Published 21 February 2007

Abstract

The magnetic-field dependence of the oxygen isotope $({}^{16}O ∕ {}^{18}O)$ effect (OIE) on the in-plane magnetic-field penetration depth $λ_{a b}$ was studied in the hole-doped high-temperature cuprate superconductors $Y {Ba}_{2} {Cu}_{4} O_{8}$ , $Y_{0.8} \Pr_{0.2} {Ba}_{2} {Cu}_{3} O_{7 - δ}$ , and $Y_{0.7} \Pr_{0.3} {Ba}_{2} {Cu}_{3} O_{7 - δ}$ . It was found that the OIE on $λ_{a b}$ decreases by more than a factor of 2 with increasing magnetic field from $μ_{0} H = 0.2 T to μ_{0} H = 0.6 T$ . This effect can be explained by the isotope dependence of the in-plane charge carrier mass $m_{a b}^{*}$ .

Received 18 October 2006

DOI:https://doi.org/10.1103/PhysRevB.75.060505

Authors & Affiliations

R. Khasanov^1,*, A. Shengelaya^1,2, D. Di Castro^1,3, D. G. Eshchenko^1,4, I. M. Savić⁵, K. Conder⁶, E. Pomjakushina^6,7, J. Karpinski⁸, S. Kazakov⁸, and H. Keller¹

¹Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
²Physics Institute of Tbilisi State University, Chavchavadze 3, GE-0128 Tbilisi, Georgia
³CNR-INFM-Coherentia and Dipartimento di Fisica, Universita di Roma La Sapienza, Piazzale Aldo Moro 2, I-00185 Roma, Italy
⁴Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
⁵Faculty of Physics, University of Belgrade, 11001 Belgrade, Serbia
⁶Laboratory for Developments and Methods, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
⁷Laboratory for Neutron Scattering, ETH Zürich and Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
⁸Solid State Physics Laboratory, ETH 8093 Zürich, Switzerland

^*Electronic address: rustem.khasanov@physik.unizh.ch

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 75, Iss. 6 — 1 February 2007

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review B

covering condensed matter and materials physics