Competing exchange interactions in Li2CuO2

M. Boehm; S. Coad; B. Roessli; A. Zheludev; M. Zolliker; P. Böni; D. Mck Paul; H. Eisaki; N. Motoyama; S. Uchida

doi:10.1209/epl/i1998-00322-3

Competing exchange interactions in Li₂CuO₂

M. Boehm, S. Coad, B. Roessli, A. Zheludev, M. Zolliker, P. Böni, D. Mck Paul, H. Eisaki, N. Motoyama, S. Uchida

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

61 Scopus citations

Abstract

The dispersion of the spin-waves in single crystals of Li₂CuO₂ has been investigated by means of inelastic neutron scattering. The results yield a single spin-wave branch characterized by a large gap Δ = 1.4 meV at the zone centre due to easy-axis uniaxial anisotropy. Linear spin-wave theory is used to obtain the exchange integrals in this material. It turns out that the nearest-neighbor exchange interactions in the basal plane are antiferromagnetic leading to frustration between the magnetic moments. Our results show that Li₂CuO₂ is an S = 1/2 antiferromagnetic insulator with competing interactions.

Original language	English
Pages (from-to)	77-82
Number of pages	6
Journal	Europhysics Letters
Volume	43
Issue number	1
DOIs	https://doi.org/10.1209/epl/i1998-00322-3
State	Published - 1 Jul 1998
Externally published	Yes

Access to Document

10.1209/epl/i1998-00322-3

Cite this

@article{3ef31d947ad447a0b289bebb5ec3a5ed,

title = "Competing exchange interactions in Li2CuO2",

abstract = "The dispersion of the spin-waves in single crystals of Li2CuO2 has been investigated by means of inelastic neutron scattering. The results yield a single spin-wave branch characterized by a large gap Δ = 1.4 meV at the zone centre due to easy-axis uniaxial anisotropy. Linear spin-wave theory is used to obtain the exchange integrals in this material. It turns out that the nearest-neighbor exchange interactions in the basal plane are antiferromagnetic leading to frustration between the magnetic moments. Our results show that Li2CuO2 is an S = 1/2 antiferromagnetic insulator with competing interactions.",

author = "M. Boehm and S. Coad and B. Roessli and A. Zheludev and M. Zolliker and P. B{\"o}ni and Paul, {D. Mck} and H. Eisaki and N. Motoyama and S. Uchida",

year = "1998",

month = jul,

day = "1",

doi = "10.1209/epl/i1998-00322-3",

language = "English",

volume = "43",

pages = "77--82",

journal = "Europhysics Letters",

issn = "0295-5075",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Competing exchange interactions in Li2CuO2

AU - Boehm, M.

AU - Coad, S.

AU - Roessli, B.

AU - Zheludev, A.

AU - Zolliker, M.

AU - Böni, P.

AU - Paul, D. Mck

AU - Eisaki, H.

AU - Motoyama, N.

AU - Uchida, S.

PY - 1998/7/1

Y1 - 1998/7/1

N2 - The dispersion of the spin-waves in single crystals of Li2CuO2 has been investigated by means of inelastic neutron scattering. The results yield a single spin-wave branch characterized by a large gap Δ = 1.4 meV at the zone centre due to easy-axis uniaxial anisotropy. Linear spin-wave theory is used to obtain the exchange integrals in this material. It turns out that the nearest-neighbor exchange interactions in the basal plane are antiferromagnetic leading to frustration between the magnetic moments. Our results show that Li2CuO2 is an S = 1/2 antiferromagnetic insulator with competing interactions.

AB - The dispersion of the spin-waves in single crystals of Li2CuO2 has been investigated by means of inelastic neutron scattering. The results yield a single spin-wave branch characterized by a large gap Δ = 1.4 meV at the zone centre due to easy-axis uniaxial anisotropy. Linear spin-wave theory is used to obtain the exchange integrals in this material. It turns out that the nearest-neighbor exchange interactions in the basal plane are antiferromagnetic leading to frustration between the magnetic moments. Our results show that Li2CuO2 is an S = 1/2 antiferromagnetic insulator with competing interactions.

UR - http://www.scopus.com/inward/record.url?scp=0032122486&partnerID=8YFLogxK

U2 - 10.1209/epl/i1998-00322-3

DO - 10.1209/epl/i1998-00322-3

M3 - Article

AN - SCOPUS:0032122486

SN - 0295-5075

VL - 43

SP - 77

EP - 82

JO - Europhysics Letters

JF - Europhysics Letters

IS - 1

ER -

Competing exchange interactions in Li₂CuO₂

Abstract

Access to Document

Other files and links

Fingerprint

Cite this