Competing exchange interactions in Li2CuO2
UNSPECIFIED. (1998) Competing exchange interactions in Li2CuO2. EUROPHYSICS LETTERS, 43 (1). pp. 77-82. ISSN 0295-5075Full text not available from this repository.
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 Delta = 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.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||EUROPHYSICS LETTERS|
|Publisher:||E D P SCIENCES|
|Official Date:||1 July 1998|
|Number of Pages:||6|
|Page Range:||pp. 77-82|
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