Spin Dynamics in the LTT Phase of ~1/8 Doped Single Crystal La_{1.67}Eu_{0.2}Sr_{0.13}CuO_4

A. Revcolevschi (Laboratoire de Chimie des Solides; B. B\"uchner; B.J. Suh; France); Germany); K\"oln; M. H\"ucker; Orsay; P.C. Hammel (Los Alamos National Laboratory); U. Ammerahl (II. Physikalisches Institut

arxiv: cond-mat/9911272 · v2 · submitted 1999-11-17 · ❄️ cond-mat.str-el

Spin Dynamics in the LTT Phase of ~1/8 Doped Single Crystal La_(1.67)Eu_(0.2)Sr_(0.13)CuO₄

B.J. Suh , P.C. Hammel (Los Alamos National Laboratory) , M. H\"ucker , B. B\"uchner , U. Ammerahl (II. Physikalisches Institut , Universitat zu K\"oln , K\"oln , Germany)

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A. Revcolevschi (Laboratoire de Chimie des Solides Universite Paris-Sud Orsay France)

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keywords spincrystalfluctuationsorderedphaserelaxationsinglestate

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We present La and Cu NMR relaxation measurements in single crystal La_{1.67}Eu_{0.2}Sr_{0.13}CuO_4. A strong peak in the La spin-lattice relaxation rate observed in the spin ordered state is well-described by the BPP mechanism[1] and arises from continuous slowing of electronic spin fluctuations with decreasing temperature; these spin fluctuations exhibit XY-like anisotropy in the ordered state. The spin pseudogap is enhanced by the static charge-stripe order in the LTT phase.

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Spin Dynamics in the LTT Phase of ~1/8 Doped Single Crystal La_(1.67)Eu_(0.2)Sr_(0.13)CuO₄

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