Antiferromagnetism in the spin-gap system<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="bold">NaV</mml:mi><mml:mn mathvariant="bold">2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="bold">O</mml:mi><mml:mn mathvariant="bold">5</mml:mn></mml:msub></mml:mrow></mml:math>: Muon spin rotation measurements

Storchak, Vyacheslav G.; Parfenov, Oleg E.; Eshchenko, D. G.; Lichti, R. L.; Mengyan, Patrick W.; Isobe, Masahiko; Ueda, Yutaka

doi:10.1103/physrevb.85.094406

Cited by 6 publications

(2 citation statements)

References 55 publications

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“…Such SP states have been previously invoked to explain μ + SR spectra in strongly correlated insulators [28,38], semiconductors [26,27,31] and metals [29,30]. The latter reference initiated a debate on SP formation in MnSi [39,40].…”

Section: Muon Spin Rotation Studiesmentioning

confidence: 99%

Spin gap in heavy fermion compound UBe₁₃

et al. 2016

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Heavy fermion (HF) compounds are well known for their unique properties, such as narrow bandwidths, loss of coherence in a metal, non-Fermi-liquid behaviour, unconventional superconductivity, huge magnetoresistance etc. While these materials have been known since the 1970s, there is still considerable uncertainty regarding the fundamental mechanisms responsible for some of these features. Here we report transverse-field muon spin rotation (μ + SR) experiments on the canonical HF compound UBe 13 in the temperature range from 0.025 to 300 K and in magnetic fields up to 7 T. The μ + SR spectra exhibit a sharp anomaly at 180 K. We present a simple explanation of the experimental findings identifying this anomaly with a gap in the spin excitation spectrum of f-electrons opening near 180 K. It is consistent with anomalies discovered in heat capacity, NMR and optical conductivity measurements of UBe 13 , as well as with the new resistivity data presented here. The proposed physical picture may explain several long-standing mysteries of UBe 13 (as well as other HF systems).

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Section: Muon Spin Rotation Studiesmentioning

confidence: 99%

Spin gap in heavy fermion compound UBe₁₃

et al. 2016

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“…Similar SPs may be expected in a system of antiferromagnetically coupled dimers, or for other short-range AF correlations at low temperature. In such a system, the difference of the exchange energy between the final FM local order and the initial AF-coupled spin-singlet (dimer) state represents the compensation mechanism leading to SP formation [19].…”

Section: Introductionmentioning

confidence: 99%

Thermal destruction of spin-polaron bands in the narrow-gap correlated semiconductors FeGa₃and FeSb₂

Storchak

Brewer

Lichti

et al. 2012

J. Phys.: Condens. Matter

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We report muon spin rotation spectra in the narrow-gap semiconductors FeGa(3) and FeSb(2) consistent with a narrow band of small spin polarons (SPs). The characteristic sizes obtained for these SPs are R(FeGa(3)) ≈ 0.3-0.6 nm and R(FeSb (2)) ≈ 0.3 nm, respectively. Such SP states are expected to originate from the exchange correlations between localized and itinerant electrons. Our data suggest that SP bands are formed at low temperature, but are destroyed by thermal fluctuations above 10 K in FeGa(3) and above 7 K in FeSb(2). Formation of such SP band states can explain many of the low-temperature properties of these materials.

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Collision and propagation of electromagnetic solitons in an antiferromagnetic spin ladder medium

Kavitha

Srividya

Dhamayanthi

et al. 2015

Applied Mathematics and Computation

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Antiferromagnetism in the spin-gap systemNaV2O5: Muon spin rotation measurements

Cited by 6 publications

References 55 publications

Spin gap in heavy fermion compound UBe₁₃

Spin gap in heavy fermion compound UBe₁₃

Thermal destruction of spin-polaron bands in the narrow-gap correlated semiconductors FeGa₃and FeSb₂

Collision and propagation of electromagnetic solitons in an antiferromagnetic spin ladder medium

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Antiferromagnetism in the spin-gap systemNaV2O5: Muon spin rotation measurements

Cited by 6 publications

References 55 publications

Spin gap in heavy fermion compound UBe13

Spin gap in heavy fermion compound UBe13

Thermal destruction of spin-polaron bands in the narrow-gap correlated semiconductors FeGa3and FeSb2

Collision and propagation of electromagnetic solitons in an antiferromagnetic spin ladder medium

Contact Info

Product

Resources

About

Spin gap in heavy fermion compound UBe₁₃

Spin gap in heavy fermion compound UBe₁₃

Thermal destruction of spin-polaron bands in the narrow-gap correlated semiconductors FeGa₃and FeSb₂