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|Title:||Static and dynamic magnetic response of fragmented haldane-like spin chains in layered Li3Cu2SbO6|
Zvereva, E. A.
Shukaev, I. L.
Stratan, M. I.
Vasiliev, A. N.
Nalbandyan, V. B.
|Publisher:||Physical Society of Japan|
|Citation:||Static and dynamic magnetic response of fragmented haldane-like spin chains in layered Li3Cu2SbO6 / C. Koo, E. A. Zvereva, I. L. Shukaev, et al. — DOI 10.7566/JPSJ.85.084702 // Journal of the Physical Society of Japan. — 2016. — Vol. 85. — Iss. 8. — 084702.|
|Abstract:||The structure and the magnetic properties of layered Li3Cu2SbO6 are investigated by powder X-ray diffraction, static susceptibility, and electron spin resonance studies up to 330 GHz. The XRD data experimentally verify the space group C2=m with halved unit cell volume in contrast to previously reported C2=c. In addition, the data show significant Li=Cuintersite exchange. Static magnetic susceptibility and ESR measurements show two magnetic contributions, i.e., quasifree spins at low-temperature and a spin-gapped magnetic subsystem, with about half of the spins being associated to each subsystem. The data suggest ferromagnetic-antiferromagnetic alternating chains with JFM = -285 K and JAFM = 160 K with a significant amount of Li-defects in the chains. The results are discussed in the scenario of fragmented 1D S = 1 AFM chains with a rather high defect concentration of about 17% and associated S =1=2 edge states of the resulting finite Haldane chains. © 2016 The Physical Society of Japan.|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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