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論文

Quantum critical spin-liquid-like behavior in the $$S$$ = $$frac{1}{2}$$ quasikagome-lattice compound CeRh$$_{1-x}$$Pd$$_x$$Sn investigated using muon spin relaxation and neutron scattering

Tripathi, R.*; Adroja, D. T.*; Ritter, C.*; Sharma, S.*; Yang, C.*; Hillier, A. D.*; Koza, M. M.*; Demmel, F.*; Sundaresan, A.*; Langridge, S.*; et al.

Physical Review B, 106(6), p.064436_1 - 064436_17, 2022/08

 被引用回数:2 パーセンタイル:37.1(Materials Science, Multidisciplinary)

We present the results of muon spin relaxation ($$mu$$SR) and neutron scattering measurements on the Ce-based quasikagome lattice CeRh$$_{1-x}$$Pd$$_x$$Sn ($$x$$ = 0.1 to 0.75). Our $$mu$$SR results reveal the absence of both static long-range magnetic order and spin freezing down to 0.05 K in the $$x$$ = 0.1 sample, which is consistent with neutron scattering results. The weak temperature-dependent plateaus of the dynamic spin fluctuations below 0.2 K in zero field together with its longitudinal-field (LF) dependence indicate the presence of dynamic spin fluctuations persisting even at 0.05 K without static magnetic order. We argue that such a behavior for $$x$$ = 0.1 can be attributed to a metallic spin-liquid-like ground state near the quantum critical point in the frustrated Kondo lattice. The LF-$$mu$$SR study suggests that the out of kagome plane spin fluctuations are responsible for the spin-liquid behavior.

論文

Isolated hydrogen center in wide gap semiconductors studied by $$mu$$SR

下村 浩一郎*; 門野 良典*; 西山 樟生*; 渡辺 功雄*; 鈴木 栄男*; Pratt, F.*; 大石 一城; 水田 正志*; 斎藤 峯雄*; Chow, K. H.*; et al.

Physica B; Condensed Matter, 376-377, p.444 - 446, 2006/04

 被引用回数:1 パーセンタイル:6.65(Physics, Condensed Matter)

Recent progresses of the studies of isolated hydrogen center in ZnO and GaN by muon spin rotation methods are reported. Preliminary experimental results for shallow muonium hunting as an acceptor in InSb and GaSb are also discussed.

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