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Local Magnetic Susceptibility of the Positive Muon in the Quasi 1D S=1/2 Antiferromagnet KCuF$_3$

J. Chakhalian·R. F. Kiefl·R. Miller·S. R. Dunsiger·G. Morris·S. Kreitzman·J. Sonier·S. Eggert·I. Affleck·I. Yamada
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Abstract

We report muon spin rotation measurements of the local magnetic susceptibility around a positive muon in the paramagnetic state of the quasi one-dimensional spin 1/2 antiferromagnet KCuF$_3$. Signals from two distinct sites are resolved which have a temperature dependent frequency shift which is different than the magnetic susceptibility. This difference is attributed to a muon induced perturbation of the spin 1/2 chain.

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J. Chakhalian, R. F. Kiefl, R. Miller, S. R. Dunsiger, G. Morris, S. Kreitzman, J. Sonier, S. Eggert, I. Affleck, I. Yamada. 2002-10-02. Local Magnetic Susceptibility of the Positive Muon in the Quasi 1D S=1/2 Antiferromagnet KCuF$_3$. https://doi.org/10.1016/s0921-4526(02)01655-1

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