2004/01/12 by Hisashi Kotegawa, H. Kotegawa, Y. Tokunaga +15 · 4 citations
Chemistry · Materials Science · Physics and Astronomy · #Antiferromagnetism #Chemistry #Condensed matter physics #Crystallography #Doping #Iron-based superconductors research #Materials science #Physics #Physics of Superconductivity and Magnetism #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.69.014501
published as Phys. Rev. B 69, 014501 (2004) · 6 pages, 8 figures
openalex publication_date 2004/01/12 · arxiv created 2004/01/22 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report a coexistence of superconductivity and antiferromagnetism in five-layered compound HgBa2Ca4Cu5Oy (Hg-1245) with Tc=108K, which is composed of two types of CuO2 planes in a unit cell; three inner planes (IP's) and two outer planes (OP's). The Cu-NMR study has revealed that the optimally doped OP undergoes a superconducting (SC) transition at Tc=108K, whereas the three underdoped IP's do an antiferromagnetic (AF) transition below TN\ensuremath∼60K with the Cu moments of \ensuremath∼(0.3--0.4)\ensuremathμB. Thus bulk superconductivity with a high value of Tc=108K and a static AF ordering at TN=60K are realized in the alternating AF and SC layers. The AF-spin polarization at the IP is found to induce the Cu moments of \ensuremath∼0.02\ensuremathμB at the SC OP, which is the AF proximity effect into the SC OP.