Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3 O4Cl2

P. Babkevich; N. E. Shaik; D. Lançon; A. Kikkawa; M. Enderle; R. A. Ewings; H. C. Walker; D. T. Adroja; P. Manuel; D. D. Khalyavin; Y. Taguchi; Y. Tokura; M. Soda; T. Masuda; H. M. Rønnow

doi:10.1103/PhysRevB.96.014410

Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3 O4Cl2

P. Babkevich, N. E. Shaik, D. Lançon, A. Kikkawa, M. Enderle, R. A. Ewings, H. C. Walker, D. T. Adroja, P. Manuel, D. D. Khalyavin, Y. Taguchi, Y. Tokura, M. Soda, T. Masuda, H. M. Rønnow

Physics

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

We report detailed neutron scattering studies on Ba2Cu3O4Cl2. The compound consists of two interpenetrating sublattices of Cu, labeled as CuA and CuB, each of which forms a square-lattice Heisenberg antiferromagnet. The two sublattices order at different temperatures and effective exchange couplings within the sublattices differ by an order of magnitude. This yields an inelastic neutron spectrum of the CuA sublattice extending up to 300 meV and a much weaker dispersion of CuB going up to around 20 meV. Using a single-band Hubbard model we derive an effective spin Hamiltonian. From this, we find that linear spin-wave theory gives a good description to the magnetic spectrum. In addition, a magnetic field of 10 T is found to produce effects on the CuB dispersion that cannot be explained by conventional spin-wave theory.

Original language	English
Article number	014410
Journal	Physical Review B
Volume	96
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.96.014410
Publication status	Published - 6 Jul 2017

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.96.014410

Cite this

Babkevich, P., Shaik, N. E., Lançon, D., Kikkawa, A., Enderle, M., Ewings, R. A., Walker, H. C., Adroja, D. T., Manuel, P., Khalyavin, D. D., Taguchi, Y., Tokura, Y., Soda, M., Masuda, T., & Rønnow, H. M. (2017). Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3 O4Cl2. Physical Review B, 96(1), Article 014410. https://doi.org/10.1103/PhysRevB.96.014410

@article{ac73ced9bf2c43fca2be25a896dd2e39,

title = "Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3 O4Cl2",

abstract = "We report detailed neutron scattering studies on Ba2Cu3O4Cl2. The compound consists of two interpenetrating sublattices of Cu, labeled as CuA and CuB, each of which forms a square-lattice Heisenberg antiferromagnet. The two sublattices order at different temperatures and effective exchange couplings within the sublattices differ by an order of magnitude. This yields an inelastic neutron spectrum of the CuA sublattice extending up to 300 meV and a much weaker dispersion of CuB going up to around 20 meV. Using a single-band Hubbard model we derive an effective spin Hamiltonian. From this, we find that linear spin-wave theory gives a good description to the magnetic spectrum. In addition, a magnetic field of 10 T is found to produce effects on the CuB dispersion that cannot be explained by conventional spin-wave theory.",

author = "P. Babkevich and Shaik, {N. E.} and D. Lan{\c c}on and A. Kikkawa and M. Enderle and Ewings, {R. A.} and Walker, {H. C.} and Adroja, {D. T.} and P. Manuel and Khalyavin, {D. D.} and Y. Taguchi and Y. Tokura and M. Soda and T. Masuda and R{\o}nnow, {H. M.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = jul,

day = "6",

doi = "10.1103/PhysRevB.96.014410",

language = "English",

volume = "96",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3 O4Cl2

AU - Babkevich, P.

AU - Shaik, N. E.

AU - Lançon, D.

AU - Kikkawa, A.

AU - Enderle, M.

AU - Ewings, R. A.

AU - Walker, H. C.

AU - Adroja, D. T.

AU - Manuel, P.

AU - Khalyavin, D. D.

AU - Taguchi, Y.

AU - Tokura, Y.

AU - Soda, M.

AU - Masuda, T.

AU - Rønnow, H. M.

PY - 2017/7/6

Y1 - 2017/7/6

N2 - We report detailed neutron scattering studies on Ba2Cu3O4Cl2. The compound consists of two interpenetrating sublattices of Cu, labeled as CuA and CuB, each of which forms a square-lattice Heisenberg antiferromagnet. The two sublattices order at different temperatures and effective exchange couplings within the sublattices differ by an order of magnitude. This yields an inelastic neutron spectrum of the CuA sublattice extending up to 300 meV and a much weaker dispersion of CuB going up to around 20 meV. Using a single-band Hubbard model we derive an effective spin Hamiltonian. From this, we find that linear spin-wave theory gives a good description to the magnetic spectrum. In addition, a magnetic field of 10 T is found to produce effects on the CuB dispersion that cannot be explained by conventional spin-wave theory.

AB - We report detailed neutron scattering studies on Ba2Cu3O4Cl2. The compound consists of two interpenetrating sublattices of Cu, labeled as CuA and CuB, each of which forms a square-lattice Heisenberg antiferromagnet. The two sublattices order at different temperatures and effective exchange couplings within the sublattices differ by an order of magnitude. This yields an inelastic neutron spectrum of the CuA sublattice extending up to 300 meV and a much weaker dispersion of CuB going up to around 20 meV. Using a single-band Hubbard model we derive an effective spin Hamiltonian. From this, we find that linear spin-wave theory gives a good description to the magnetic spectrum. In addition, a magnetic field of 10 T is found to produce effects on the CuB dispersion that cannot be explained by conventional spin-wave theory.

UR - http://www.scopus.com/inward/record.url?scp=85026545606&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.96.014410

DO - 10.1103/PhysRevB.96.014410

M3 - Article

AN - SCOPUS:85026545606

SN - 2469-9950

VL - 96

JO - Physical Review B

JF - Physical Review B

IS - 1

M1 - 014410

ER -

Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3 O4Cl2

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this