Erratum: Magnetic structure and Dzyaloshinskii-Moriya interaction in the 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi mathvariant="bold-italic">S</mml:mi><mml:mo>=</mml:mo><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:mrow></mml:math>
 helical-honeycomb antiferromagnet 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mi mathvariant="bold">α</mml:mi></mml:mrow><mml:mtext>−</mml:mtext><mml:mrow><mml:msub><mml:mi mathvariant="

Gitgeatpong, G.; Zhao, Yuzhen; Avdeev, Maxim; Piltz, Ross O.; Sato, Tomonori; Matan, K.

doi:10.1103/physrevb.95.099902

Cited by 15 publications

(41 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For simplifying the calculation, we have not considered any anisotropy term in the Hamiltonian. For the simulation of the spin wave spectra we used the canted magnetic structure reported by Lee et al, 14 and exchange parameters based on model-I 12 and model-II 13 as given in table-I. For model-I, as discussed before, the dominant term is J 3 , while in model-II, the exchange paths comprise a helical honeycomb network with J 1 and J 2 being the only interaction terms.…”

Section: -14mentioning

confidence: 99%

Spin wave excitations in the pyrovanadate α−Cu2V2O7

et al. 2016

View full text Add to dashboard Cite

The pyrovanadate α-Cu2V2O7 belongs to the orthorhombic (F dd2) class of crystals with noncentrosymmetric crystal structure. Recently, the compound has been identified to be a magnetic multiferroic with a substantial electric polarization below the magnetic transition temperature TC = 35 K. Here we report the results of our inelastic neutron scattering (INS) studies on a polycrystalline sample of α-Cu2V2O7. Our INS data clearly show the existence of dispersive spin wave excitations below TC with a zone-boundary energy of 11 meV at 5 K. We have analyzed the data using linear spin wave theory, which shows good agreement between the experiment and calculation. The analysis is consistent with the third nearest neighbor exchange interaction playing a dominant role in the magnetism of the material.PACS numbers: 78.70. Nx, 75.85.+t, 75.30.Ds The family of pyrovanadates with general formula M 2 V 2 O 7 (M = Cu, Ni, Co, Mn) has attracted considerable attention due to their fascinating and diverse crystal structures, which are built out of various extended units of M-O and V-O polyhedra.1-4 They can have low-dimensional (chain, sheet, honey-comb etc.) to more complex three dimensional structures with intriguing magnetic and electronic properties.5,6 These pyrovanadates broadly crystallize in two different groups of structures: thortveitite (Sc 2 Si 2 O 7 type) or dichromate (K 2 Cr 2 O 7 type). 4Among the various members of the group, Cu 2 V 2 O 7 draws special attention both for its structural and electronic aspects. This compound can crystallize in at least four polymorphic phases (namely α, β, β ′ and γ) with different lattice symmetry (although all thortveitite type).6-8 The β phase can be described as a spin 1/2 Heisenberg system on a two dimensional (2D) honeycomb lattice .6 On the other hand, the α phase is better described by two sets of mutually perpendicular zigzag chains with strong inter-chain magnetic interactions. Here all Cu 2+ ions are equivalent with fivefold coordination to oxygen atoms forming a distorted [CuO 5 ] polyhedron. Each distorted polyhedron is linked with another two via edge sharing and together they form the two sets of mutually perpendicular zig zag chains (see Fig. 1) in the bc plane.7,9 Notably, α-Cu 2 V 2 O 7 crystallizes in the Orthorhombic F dd2 structure and it is the only member of the pyrovanadates to have a non-centrosymmetric crystal structure.The magnetic and electric properties of α-Cu 2 V 2 O 7 are equally interesting. The compound undergoes long range magnetic ordering below T C = 35 K with a spin canted structure.9-11 Recent work by our group identified the compound to be an improper multiferroic with the simul- taneous development of spontaneous electric polarization and magnetization below T C .12 Density functional theory (DFT) based calculations indicate that the magnetism in α-Cu 2 V 2 O 7 is a consequence of ferro-orbital ordering due to the unique pyramidal CuO 5 environment and the origin of the giant ferroelectric polarization is primarily due to the symmetric exc...

show abstract

Section: -14mentioning

confidence: 99%

Spin wave excitations in the pyrovanadate α−Cu2V2O7

et al. 2016

View full text Add to dashboard Cite

show abstract

“…As illustrated in Fig. 1(a), all Cu 2+ ions form two sets of almost perpendicular zigzag chains [6][7][8][9].Magnetic properties of α-Cu 2 V 2 O 7 are governed by Cu 2+ S = 1/2 spins, since V 5+ ions are nonmagnetic. In the proposed spin Hamiltonian [10], there are three important terms to explain the magnetic properties of α-Cu 2 V 2 O 7 .…”

mentioning

confidence: 99%

“…As illustrated in Fig. 1(a), all Cu 2+ ions form two sets of almost perpendicular zigzag chains [6][7][8][9].…”

mentioning

confidence: 99%

“…The clear observation of the SSE in antiferromagnetic α-Cu 2 V 2 O 7 allows us to test the theoretical models proposed for the antiferromagnetic SSE [16,17]. Using the magnon spin current theory [17] combined with magnetic parameters determined by previous neutron experiments for α-Cu 2 V 2 O 7 [8-10], we demonstrated that temperature and magnetic-field dependences of magnon lifetimes are important for the antiferromagnetic SSE in α-Cu 2 V 2 O 7 |Pt systems.Single crystals of α-Cu 2 V 2 O 7 were grown by a vertical Bridgman method following the previous reports [8][9][10]. …”

mentioning

confidence: 99%

“…Single crystals of α-Cu 2 V 2 O 7 were grown by a vertical Bridgman method following the previous reports [8][9][10].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Spin Seebeck effect in the polar antiferromagnet α−Cu2V2O7

et al. 2017

Self Cite

View full text Add to dashboard Cite

We have studied the longitudinal spin Seebeck effect in a polar antiferromagnet α-Cu2V2O7 in contact with a Pt film. Below the antiferromagnetic transition temperature of α-Cu2V2O7, spin Seebeck voltages whose magnetic field dependence is similar to that reported in antiferromagnetic MnF2|Pt bilayers are observed. Though a small weak-ferromagnetic moment appears owing to the Dzyaloshinskii-Moriya interaction in α-Cu2V2O7, the magnetic field dependence of spin Seebeck voltages is found to be irrelevant to the weak ferromagnetic moments. The dependences of the spin Seebeck voltages on magnetic fields and temperature are analyzed by a magnon spin current theory. The numerical calculation of spin Seebeck voltages using magnetic parameters of α-Cu2V2O7 determined by previous neutron scattering studies reveals that the magnetic-field and temperature dependences of the spin Seebeck voltages for α-Cu2V2O7|Pt are governed by the changes in magnon lifetimes with magnetic fields and temperature.Low-dimensional quantum magnets have attracted much attention in condensed matter physics for many decades [1,2]. It is known that in a one-dimensional antiferromagnetic system, long-range ordering is absent even at zero temperature [3], leading to exotic magnetic ground states, e.g. quantum spin liquid states [4]. Spin excitations in spin liquid states are spinons, which are regarded as spin-1/2 excitations as opposed to spin-1 excitations of magnons. Very recently, spin currents carried by spinons were demonstrated experimentally using the spin Seebeck effect (SSE) in Sr 2 CuO 3 |Pt systems [5]. Unusual magnetic properties of low-dimensional quantum magnets are intriguing for the search of new spin current effects.Among various compounds, a copper divanadates α-Cu 2 V 2 O 7 is a low-dimensional antiferromagnetic spin-1/2 system with fascinating magnetic properties. The oxide compound Cu 2 V 2 O 7 crystallizes in dichromate structure with three different polymorphs, i.e. α, β, and γ phases [6]. The structures of the β and γ phases are centrosymmetric, while the α phase possesses a noncentrosymmetric crystal structure with a polar point group (mm2) [6,7]. The space group of α-Cu 2 V 2 O 7 is F dd2 with lattice constants of a = 20.645Å, b = 8.383Å, and c = 6.442Å [8]. As illustrated in Fig. 1(a), all Cu 2+ ions form two sets of almost perpendicular zigzag chains [6][7][8][9].Magnetic properties of α-Cu 2 V 2 O 7 are governed by Cu 2+ S = 1/2 spins, since V 5+ ions are nonmagnetic. In the proposed spin Hamiltonian [10], there are three important terms to explain the magnetic properties of α-Cu 2 V 2 O 7 . The first term is isotropic exchange interactions. In the zigzag spin chains, Cu 2+ spins interact with their nearest neighbors. Since the magnetic interactions between nearest (J 1 ), second-nearest (J 2 ), and third-nearest (J 3 ) neighbors are all antiferromagnetic [6-10], α-Cu 2 V 2 O 7 exhibits antiferromagnetism. The second term is an anisotropic exchange interaction, which arises from the multiorbital correlation effect [10]. ...

show abstract

Entanglement and quantum correlations in the XX spin-1/2 honeycomb lattice

Satoori

Mahdavifar

Vahedi

2022

Sci Rep

View full text Add to dashboard Cite

The ground state phase diagram of the dimerized spin-1/2 XX honeycomb model in presence of a transverse magnetic field (TF) is known. With the absence of the magnetic field, two quantum phases, namely, the Néel and the dimerized phases have been identified. Moreover, canted Néel and the paramagnetic (PM) phases also emerge by applying the magnetic field. In this paper, using two powerful numerical exact techniques, Lanczos exact diagonalization, and Density matrix renormalization group (DMRG) methods, we study this model by focusing on the quantum correlations, the concurrence, and the quantum discord (QD) among nearest-neighbor spins. We show that the quantum correlations can capture the position of the quantum critical points in the whole range of the ground state phase diagram consistent with previous results. Although the concurrence and the QD are short-range, informative about long-ranged critical correlations. In addition, we address a ”magnetic-entanglement” behavior that starts from an entangled field around the saturation field.

show abstract

Erratum: Magnetic structure and Dzyaloshinskii-Moriya interaction in the S=12 helical-honeycomb antiferromagnet α−
G. Gitgeatpong¹,
Yuzhen Zhao²,
Maxim Avdeev³
et al.

Cited by 15 publications

References 25 publications

Spin wave excitations in the pyrovanadate α−Cu2V2O7

Spin wave excitations in the pyrovanadate α−Cu2V2O7

Spin Seebeck effect in the polar antiferromagnet α−Cu2V2O7

Entanglement and quantum correlations in the XX spin-1/2 honeycomb lattice

Contact Info

Product

Resources

About

Erratum: Magnetic structure and Dzyaloshinskii-Moriya interaction in the S=12 helical-honeycomb antiferromagnet α−G. Gitgeatpong1, Yuzhen Zhao2, Maxim Avdeev3 et al.

Cited by 15 publications

References 25 publications

Spin wave excitations in the pyrovanadate α−Cu2V2O7

Spin wave excitations in the pyrovanadate α−Cu2V2O7

Spin Seebeck effect in the polar antiferromagnet α−Cu2V2O7

Entanglement and quantum correlations in the XX spin-1/2 honeycomb lattice

Contact Info

Product

Resources

About

Erratum: Magnetic structure and Dzyaloshinskii-Moriya interaction in the S=12 helical-honeycomb antiferromagnet α−
G. Gitgeatpong¹,
Yuzhen Zhao²,
Maxim Avdeev³
et al.