Local Magnetic Susceptibility of the Positive Muon in the Quasi 1D S=1/2 Antiferromagnet KCuF₃

J. Chakhalian , R.F. Kiefl , R. Miller , S.R. Dunsiger , G. Morris , S. Kreitzman , J. Sonier , S. Eggert

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I. Affleck I. Yamada

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classification ❄️ cond-mat.str-el cond-mat.mtrl-sci

keywords muonmagneticspinsusceptibilityantiferromagnetkcuflocalpositive

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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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Local Magnetic Susceptibility of the Positive Muon in the Quasi 1D S=1/2 Antiferromagnet KCuF₃

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