|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Static and Dynamic Magnetic Response of Fragmented Haldane-like Spin Chains in Layered Li3Cu2SbO6статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 сентября 2016 г.
- Авторы: Changhyun Koo, Zvereva Elena A., Shukaev Igor L., Michael Richter, Stratan Mikhail I., Vasiliev Alexander N., Nalbandyan Vladimir B., and Rüdiger Klingeler
- Журнал: Journal of the Physical Society of Japan
- Том: 85
- Год издания: 2016
- Издательство: Institute of Pure and Applied Physics
- Местоположение издательства: Japan
- Первая страница: 084702
- DOI: 10.7566/JPSJ.85.084702
- Аннотация: 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.
- Добавил в систему: Васильев Александр Николаевич