Bulk evidence for s -wave pairing symmetry in electron-doped infinite-layer cuprate Sr 0.9 La 0.1 CuO 2

2003/06/10 by Z. Y. Liu, Z. Y Liu, H. H Wen +13 · 2 citations
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Copper-based nanomaterials and applications #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1209/epl/i2003-10315-8

published as Published in Europhys. Lett.69, 263-269 (2005). · 4 pages, 4 figures

arxiv created 2003/06/10 · openalex publication_date 2004/12/16 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

The low-temperature specific heat of electron-doped (n-type) infinite-layer cuprate superconductor Sr 0.9 La 0.1 CuO 2 was measured. The quasiparticle density of states (DOS) in the mixed state is found to be consistent with the predictions of the s -wave pairing symmetry, and agree very well with the earlier results from tunnelling measurement. This is contrary to the prediction of d -wave symmetry, which has been confirmed for the hole-doped (p-type) cuprates. Our results indicate that the electronic DOS in the mixed state are mainly contributed by the vortex core area in the present sample.

Citations

• Evidence for a Transition in the Pairing Symmetry of the Electron-Doped CupratesLa2−xCexCuO4−yandPr2−xCexCuO4−y
• Evidence for a Nodeless Gap from the Superfluid Density of Optimally Doped Pr_1.855Ce_0.145CuO_4-y Films
• Evidence of Doping-Dependent Pairing Symmetry in Cuprate Superconductors

Cited by

• Doping dependence of the upper critical field in La 2−x Sr x CuO 4 from specific heat
• Phase-sensitive evidence fordx2−y2-pairing symmetry in the parent-structure high-Tccuprate superconductor Sr1−xLaxCuO2