2003/09/11 by Laurent Rigal, L. B. Rigal, D. C. Schmadel +10
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.93.137002
14 pages, 4 figures
arxiv created 2003/09/11 · openalex publication_date 2004/09/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The infrared (900--1100 cm^\ensuremath-1) Faraday rotation and circular dichroism are measured in the normal state of underdoped High Tc superconductors and used to study the magnetotransport. YBa2Cu3O6+x thin films are investigated in the temperature range 10--300 K in magnetic fields up to 8 T and as a function of oxygen concentration. A dramatic increase of the Hall frequency is observed for underdoped samples, which is not consistent with the approach to a Mott transition but is consistent with a partial gapping of the Fermi surface as predicted in density wave models.