Quantum magnetism of ferromagnetic spin dimers in 
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Mukharjee, Prashanta K.; Somesh, K.; Ranjith, K. M.; Baenitz, M.; Skourski, Y.; Adroja, D. T.; Khalyavin, D. D.; Tsirlin, Alexander A.; Nath, R.

doi:10.1103/physrevb.104.224409

Cited by 6 publications

(3 citation statements)

References 60 publications

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“…This raises the orbital degeneracy of 4d 1 Mo 5+ and leads to purely Heisenberg spins. This is similar to the crystal-field splitting of V 4+ that also forms short apical bonds within the VO 6 octahedra as in α-KVOPO 4 [46]. Orbital energies for KMoOP 2 O 7 determined from the tight-binding fit of the band structure are xy = 0.02 eV, yz = 0.98 eV, xz = 1.03 eV, x 2 −y 2 = 3.09 eV, and 3z 2 −r 2 = 4.50 eV.…”

Section: E Microscopic Magnetic Modelsupporting

confidence: 69%

“…These pairs of chains are separated from others within the bc plane by pyrophosphate molecules with distances ranging 6.18(1)-6.94(1) Å. Similar to other Mo 5+ and V 4+ containing materials [25,46,47], the formation of a short apical bond distorts the octahedral geometry with apical bond distances of d Mo−O7 = 1.67(1) Å and d Mo−O1 = 2.14(1) Å.…”

Section: A Crystal Structurementioning

confidence: 85%

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One-dimensional quantum magnetism in the S=12 Mo(V) system KMoOP2O7

et al. 2023

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We present a comprehensive experimental and ab initio study of the S = 1/2 Mo 5+ system, KMoOP 2 O 7 , and show that it realizes the S = 1 2 Heisenberg chain antiferromagnet model. Powder neutron diffraction reveals that KMoOP 2 O 7 forms a magnetic network comprised of pairs of Mo 5+ chains within its monoclinic P2 1 /n structure. Antiferromagnetic interactions within the Mo 5+ chains are identified through magnetometry measurements and confirmed by analysis of the magnetic specific heat. The latter reveals a broad feature centered on T N = 0.54 K, which we ascribe to the onset of long-range antiferromagnetic order. No magnetic Bragg scattering is observed in powder neutron-diffraction data collected at 0.05 K, however, which is consistent with a strongly suppressed ordered moment with an upper limit μ ord < 0.15 μ B . The one-dimensional character of the magnetic correlations in KMoOP 2 O 7 is verified through analysis of inelastic neutron-scattering data, resulting in a model with J 2 ≈ 34 K and J 1 ≈ −2 K for the intrachain and interchain exchange interactions, respectively. The origin of these experimental findings are addressed through density-functional theory calculations.

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Section: E Microscopic Magnetic Modelsupporting

confidence: 69%

Section: A Crystal Structurementioning

confidence: 85%

One-dimensional quantum magnetism in the S=12 Mo(V) system KMoOP2O7

et al. 2023

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“…This disparity should be traced back to the position of the vanadyl bonds and, consequently, the V 4+ magnetic orbitals, similar to α-KVOPO , where structural chains of the VO 6 octahedra split into ferromagnetic spin dimers. 52 Likewise, in Cu(VO) 2 (AsO 4 ) 2 , the infinite vanadate structural layers split into ferromagnetic zigzag spin chains that are further coupled via the Cu 2+ ions.…”

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confidence: 99%

Chemical Vapor Transport Synthesis of Cu(VO)₂(AsO₄)₂ With Two Distinct Spin-1/2 Magnetic Ions

et al. 2022

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A new copper vanadyl arsenate, Cu(VO)2(AsO4)2, was synthesized via the chemical vapor transport method. Cu(VO)2(AsO4)2 adopts an original structure type. It is characterized by layers formed by edge-sharing and corner-sharing V-centered octahedra resulting in a unique topology that was hitherto not reported for vanadates. Single CuO6 octahedra connect vanadate layers into a rigid framework. The thermal expansion of the framework studied by the single-crystal HT X-ray diffraction is reported. The magnetic behavior of Cu(VO)2(AsO4)2 shows an interplay of ferromagnetic V4+–V4+ and antiferromagnetic Cu2+–V4+ interactions that result in a ferrimagnetic long-range order below T C = 66 K.

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Magnetic short-range order and Griffiths-like phase in the S-1/2 spin-dimer ferromagnet BaCu(SeO3)2

Liu,

Ouyang,

Cao

et al. 2024

Journal of Alloys and Compounds

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Quantum magnetism of ferromagnetic spin dimers in α−KVOPO4

Cited by 6 publications

References 60 publications

One-dimensional quantum magnetism in the S=12 Mo(V) system KMoOP2O7

One-dimensional quantum magnetism in the S=12 Mo(V) system KMoOP2O7

Chemical Vapor Transport Synthesis of Cu(VO)₂(AsO₄)₂ With Two Distinct Spin-1/2 Magnetic Ions

Magnetic short-range order and Griffiths-like phase in the S-1/2 spin-dimer ferromagnet BaCu(SeO3)2

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Quantum magnetism of ferromagnetic spin dimers in α−KVOPO4

Cited by 6 publications

References 60 publications

One-dimensional quantum magnetism in the S=12 Mo(V) system KMoOP2O7

One-dimensional quantum magnetism in the S=12 Mo(V) system KMoOP2O7

Chemical Vapor Transport Synthesis of Cu(VO)2(AsO4)2 With Two Distinct Spin-1/2 Magnetic Ions

Magnetic short-range order and Griffiths-like phase in the S-1/2 spin-dimer ferromagnet BaCu(SeO3)2

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Chemical Vapor Transport Synthesis of Cu(VO)₂(AsO₄)₂ With Two Distinct Spin-1/2 Magnetic Ions