2003/01/31 by Hai‐Hu Wen, H. H. Wen, Z. Y. Liu +9
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1209/epl/i2003-00569-0
published as Europhys. Letts. 63, 583-589(2003) · 5 Pages, 4 Figures, Revised Feb.4, 2003
arxiv created 2003/02/04 · openalex publication_date 2003/08/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The Nernst effect has been measured for an underdoped and an optimally doped La 2 − x Sr x CuO 4 single crystal with the magnetic field applied along different directions. For both samples, when H ∥ c , a significant Nernst voltage appears above T c and keeps measurable up to a high temperature (100 K). However, when H ∥ ab -plane the Nernst signal along the c -axis drops below the noise level quickly above T c for the underdoped sample. Moreover, the in-plane Nernst data with field at different angles shows a nice scaling behavior with the c -axis component of the field. All these give a strong indication for a 2D feature of the Nernst signal in the normal state of underdoped cuprate superconductors.