High-pressure μSR studies on La_1.65Eu_0.20Sr_0.15CuO₄

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• 作者：Klauss ; H.-H. ; Baabe ; D. ; Mienert ; D. ; Luetkens ; H. ; Litterst ; F.J. ; Bü ; chner ; B. ; Hü ; cker ; M. ; et. al.
• 关键词：74.25.Ha ; 74.62.Fj ; 74.72.Dn ; 76.75.+i ; Superconductivity ; Stripe magnetism ; High pressure
• 刊名：Physica B
• 出版年：2003
• 期刊代码：53_09214526
• 类别：ph
• 出版时间：February, 2003
• 卷：326
• 期：1-4
• 页码：325-328
• 文件大小：120 K

摘要

The magnetic order in La_1.65Eu_0.20Sr_0.15CuO₄ has been studied under external pressure p≤8.3kbar by means of zero field and transversal field muon spin relaxation. At ambient pressure this system is in the LTT structure and exhibits static spin stripe order below 25K as evidenced by a spontaneous muon spin precession. Applying hydrostatic pressure the magnetic transition temperature as well as the sublattice magnetization and the magnetic volume fraction are reduced. Since external pressure also reduces the LTT tilt angle these experiments prove that the stability of the static stripe phase is strongly coupled to the LTT structure in this system.