Muon spin relaxation study of misfit-layered cobalt dioxide

Må̊nsson, Martin; Ikedo, Yutaka; Nozaki, Hirōshi; Sugiyama, Jun; Russo, Peter L.; Andreica, Daniel; Shizuya, Mitsuyuki; Isobe, Masaaki; Takayama‐Muromachi, E.

doi:10.1016/j.ssc.2009.10.047

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…26 Similar systems with other anions e.g., "H + H" and/or "H + " have been reported in a Kagomé compound ZnCu 3 ͑OH͒ 6 Cl 3 , 27 in a layered cobalt dioxide ͓Ca 0.85 OH͔ 1.16 ͓CoO 2 ͔, 28 in NaAlH 4 , 29 and in metal borohydrides M͑BH 4 ͒ 2 . 30 However, for a triangular three spin-one- half system, G tri ͑t͒ was, to our knowledge, not analytically derived so far.…”

Section: A H 2 O-intercalated Samplessupporting

confidence: 67%

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2Oand
Sugiyama
¹
,
Ikedo
²
,
Må̊nsson
³

et al. 2010
Phys. Rev. B
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In order to clarify the carrier density dependence of the microscopic magnetic nature in Na x CoO 2 · yH 2 O, we have performed a positive muon-spin rotation/relaxation ͑ + SR͒ study of H 2 O and D 2 O intercalated samples. Based on the zero-field ͑ZF͒ + SR measurements, there was no clear difference between the two superconducting phases ͑SCI and SCII͒. This is also likely to exclude the exotic scenario for the superconductivity of the SCII phase, in which the superconducting state breaks the time-reversal symmetry of the Cooper pairs, resulting in the appearance of a weak internal magnetic field below T c . Furthermore, the ZF spectrum for the H 2 O intercalated sample exhibits a clear oscillation in the whole T range measured ͑1.4-100 K͒, suggesting the formation of "͓H 3 O͔ + -like" H 2 + O ions in the sample. The absence of the oscillation in the D 2 O-intercalated sample also evidences the presence of the H 2 + O complex. Considering the fraction of the H 2 + O signal, we have demonstrated the coexistence of ͓H 3 O͔ + ions and H 2 O in this compound.

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Section: A H 2 O-intercalated Samplessupporting

confidence: 67%

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2Oand
Sugiyama
¹
,
Ikedo
²
,
Må̊nsson
³

et al. 2010
Phys. Rev. B
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“…1(a)]. The asymmetry spectra change obviously from T = 5 K. For T > 5 K, they are best fit by a combination of two signals, one part containing a relaxing precession signal due to the formation of a μ + -OH bond [24], and a second part with a Gaussian relaxation signal:…”

mentioning

confidence: 99%

Unconventional spin freezing in the highly two-dimensional spin-12kagome antiferromagnetCd2Cu3(OH)6(SO4

et al. 2014

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S = 1/2 quantum-spin systems of the kagome lattice have received intense recent attention because they are expected to be promising candidates for novel quantum states such as spin liquid, spin nematic, and other unknown exotic states. Here we report an unusual transition in a highly two-dimensional and slightly distorted S = 1/2 quantum kagome system Cd 2 Cu 3 (OH) 6 (SO 4 ) 2 4H 2 O, which is a purified compound of the recently identified mineral edwardsite, Cd 1.89 Zn 0.11 Cu 3 (OH) 6 (SO 4 ) 2 4H 2 O. The S = 1/2 spins of Cu 2+ ions form a highly two-dimensional kagome lattice with an extraordinarily large interlayer spacing >10Å, thus providing a unique kagome lattice with minimum interlayer perturbation. The magnetization shows a Curie-Weiss temperature of 40.5 K and moment freezing below around T F = 5 K and a magnetic transition feature near 3 K. The muon spin relaxation shows static magnetism below 5 K and saturation below 3 K. However, distinct features have been observed distinguishing it from a spin glass or a conventional order: High-field magnetization until 50 T showed a saturated value of only 1/3 of the full expected moment. Analysis of specific heat suggests that only 1/3 of the spins are related to the magnetic order; on the other hand, the order is destroyed in external field and 1/3 of the spins respond to the field with a Schottky-like behavior while the other 2/3 of the spins remain inactive. These experimental results suggest an unconventional coexistence of the partial order and most probably spin singlets.

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Electrical properties of new oxides (Ca0.85-xYxOH)1.16CoO2 synthesized by hydrothermal process

Pei

Chen

Jia

et al. 2013

Journal of Rare Earths

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Muon spin relaxation study of misfit-layered cobalt dioxide

Cited by 7 publications

References 24 publications

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2Oand
Sugiyama
¹
,
Ikedo
²
,
Må̊nsson
³

et al. 2010
Phys. Rev. B
Self Cite

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2Oand
Sugiyama
¹
,
Ikedo
²
,
Må̊nsson
³

et al. 2010
Phys. Rev. B
Self Cite

Unconventional spin freezing in the highly two-dimensional spin-12kagome antiferromagnetCd2Cu3(OH)6(SO4

Electrical properties of new oxides (Ca0.85-xYxOH)1.16CoO2 synthesized by hydrothermal process

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Muon spin relaxation study of misfit-layered cobalt dioxide

Cited by 7 publications

References 24 publications

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2OandSugiyama1, Ikedo2, Må̊nsson3 et al. 2010Phys. Rev. BSelf Cite

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2OandSugiyama1, Ikedo2, Må̊nsson3 et al. 2010Phys. Rev. BSelf Cite

Unconventional spin freezing in the highly two-dimensional spin-12kagome antiferromagnetCd2Cu3(OH)6(SO4

Electrical properties of new oxides (Ca0.85-xYxOH)1.16CoO2 synthesized by hydrothermal process

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Product

Resources

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Magnetic and superconducting nature ofNa0.35CoO2⋅yH2Oand
Sugiyama
¹
,
Ikedo
²
,
Må̊nsson
³

et al. 2010
Phys. Rev. B
Self Cite

Magnetic and superconducting nature ofNa0.35CoO2⋅yH2Oand
Sugiyama
¹
,
Ikedo
²
,
Må̊nsson
³

et al. 2010
Phys. Rev. B
Self Cite