2002/12/23 by A. Yurgens, D. Winkler, T. Claeson +3 · 3 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Cuprate #Doping #Magnetic and transport properties of perovskites and related materials #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum mechanics #Quantum tunnelling #Spectral line #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.90.147005
Submitted to Phys. Rev. Lett
arxiv created 2002/12/23 · openalex publication_date 2003/04/11 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have measured intrinsic-tunneling spectra of a single CuO-layer La-doped Bi2(Sr_2\ensuremath-xLax)CuO_6+\ensuremathδ (Bi2201\mathrm\text\ensuremath-Lax). Despite a difference of a factor of 3 in the optimal superconducting critical temperatures for Bi2201\mathrm\text\ensuremath-La0.4 and Bi2212 (32 and 95 K, respectively) and different spectral energy scales, we find that the pseudogap vanishes at a similar characteristic temperature T*\ensuremath≈230--300 K for both compounds. We find also that, in Bi2201\mathrm\text\ensuremath-Lax, pseudogap humps are seen as sharp peaks and, in fact, even dominate the intrinsic spectra.