Anisotropic effect of field on the orthorhombic-to-tetragonal transition in the striped cuprate

Z. A. Xu; N. P. Ong; T. Noda; H. Eisaki; S. Uchida

doi:10.1209/epl/i2000-00551-4

All issues

Volume 50 / No 6 (June II 2000)

Europhys. Lett., 50 6 (2000) 796-802

Abstract

Issue		Europhys. Lett. Volume 50, Number 6, June II 2000


Page(s)		796 - 802
Section		Condensed matter: electronic structure, electrical, magnetic, and optical properties
DOI		https://doi.org/10.1209/epl/i2000-00551-4
Published online		01 September 2002

Europhys. Lett., 50 (6), pp. 796-802 (2000)

Anisotropic effect of field on the orthorhombic-to-tetragonal transition in the striped cuprate ${\rm (La,Nd)}_{2-x}{\rm Sr}_x{\rm CuO}_4$

Z. A. Xu¹, N. P. Ong¹, T. Noda², H. Eisaki² and S. Uchida²

¹ Joseph Henry Laboratories of Physics, Princeton University Princeton, NJ 08544, USA
² School of Frontier Sciences, University of Tokyo Yayoi 2-11-16, Bunkyo-ku, Tokyo 113-8656, Japan

Received: 20 September 1999
Accepted: 26 April 2000

Abstract

The Nd-doped cuprate ${\rm La}_{2-y-x}{\rm Nd}_y{\rm Sr}_x{\rm CuO}_4$ displays a first-order phase transition at $T_\ab{d}$ (= 74 K for x=0.10, y = 0.60) to a low-temperature tetragonal (LTT) phase. A magnetic field $\bm H$ applied $\parallel$ the a-axis leads to an increase in $T_\ab{d}$ , whereas $T_\ab{d}$ is decreased when $\bm{H}\parallel \bm{c}$ . The field couples to the LTO-LTT instability in an anisotropic way that is not understood. Related anisotropic effects are observed in the uniform susceptibility and the in-plane magnetoresistance.

PACS: 74.72.Dn – La-based cuprates / 72.15.Gd – Galvanomagnetic and other magnetotransport effects / 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.)

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