Zhao, Guo-meng ; Singh, K. K. ; Sinha, A. P. B. ; Morris, D. E. (1995) Oxygen isotope effect on the effective mass of carriers from magnetic measurements on La2-xSrxCuO4 Physical Review B: Condensed Matter and Materials Physics, 52 (9). pp. 6840-6844. ISSN 1098-0121
Full text not available from this repository.
Official URL: http://prb.aps.org/abstract/PRB/v52/i9/p6840_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.52.6840
Abstract
Oxygen isotope effects on Tc and the Meissner fraction f have been investigated in fine-grained, decoupled La2-xSrxCuO4 with x=0.105, 0.110, and 0.115. We find that these oxygen isotope effects are related to each other: d lnTc/d lnM≊d lnf/d lnM (where M is the mass of oxygen). We also show that the trapped flux due to intergrain weak-link and intragrain flux pinning is negligible in our samples, and that the Meissner fractions for the samples with the same 16O isotope are nearly equal The observed large oxygen isotope effects on Tc and the Meissner fraction can be explained as due to the oxygen-mass dependence of m (effective mass of carriers). The results may suggest that the conducting carriers in the cuprate superconductors are of polaronic type.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 48907 |
| Deposited On: | 19 Jul 2011 07:29 |
| Last Modified: | 19 Jul 2011 07:29 |
Repository Staff Only: item control page
