KFU. Card publication. Spin relaxation in Cs2CuCl4-xBrx

KAZAN
FEDERAL UNIVERSITY

- RUS
- 中文
- ES

SPIN RELAXATION IN CS2CUCL4-XBRX

Form of presentation

Articles in international journals and collections

Year of publication

2021

Язык

английский

Authors, employees of KFU

Eremin Mikhail Vasilevich, author

Eremina Rushana Mikhaylovna, author

Bibliographic description in the original language

Hassanabadi R, Eremina R.M, Hemmida M, Spin relaxation in Cs2CuCl4-xBrx//Physical Review B. - 2021. - Vol.103, Is.6. - Art. № 064420.

Annotation

The quantum-spin S = 1/2 chain system Cs2CuCl4 is of high interest due to competing antiferromagnetic intrachain J and interchain exchange interactions and represents a paramount example for Bose-Einstein condensation of magnons [R. Coldea et al., Phys. Rev. Lett. 88, 137202 (2002)]. Substitution of chlorine by bromine allows tuning the competing exchange interactions and corresponding magnetic frustration. Thereby, anisotropic exchange contributions may be decisive for the resulting ground state. Here we report on electron spin resonance (ESR) in single crystals of Cs2CuCl4−xBrx with the aim to analyze the evolution of these anisotropic exchange contributions. The main source of the ESR linewidth is attributed to the uniform Dzyaloshinskii- Moriya interaction. The vector components of the Dzyaloshinskii-Moriya interaction are determined from the angular dependence of the ESR spectra using a high-temperature approximation. The obtained results support the site selectivity of the Br substitution suggested from the evolution of lattice parameters and magnetic susceptibility dependent on the Br concentration.

Keywords

Cs2CuCl4−xBrx, ESR, anisotropic exchange interaction

The name of the journal

PHYSICAL REVIEW B

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101825979&doi=10.1103%2fPhysRevB.103.064420&partnerID=40&md5=284061ee31ac45dd49e7d2e89c370799

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=250875&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Eremin Mikhail Vasilevich	ru_RU
dc.contributor.author	Eremina Rushana Mikhaylovna	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Hassanabadi R, Eremina R.M, Hemmida M, Spin relaxation in Cs2CuCl4-xBrx//Physical Review B. - 2021. - Vol.103, Is.6. - Art. № 064420.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=250875&p_lang=2	ru_RU
dc.description.abstract	PHYSICAL REVIEW B	ru_RU
dc.description.abstract	The quantum-spin S = 1/2 chain system Cs2CuCl4 is of high interest due to competing antiferromagnetic intrachain J and interchain exchange interactions and represents a paramount example for Bose-Einstein condensation of magnons [R. Coldea et al., Phys. Rev. Lett. 88, 137202 (2002)]. Substitution of chlorine by bromine allows tuning the competing exchange interactions and corresponding magnetic frustration. Thereby, anisotropic exchange contributions may be decisive for the resulting ground state. Here we report on electron spin resonance (ESR) in single crystals of Cs2CuCl4−xBrx with the aim to analyze the evolution of these anisotropic exchange contributions. The main source of the ESR linewidth is attributed to the uniform Dzyaloshinskii- Moriya interaction. The vector components of the Dzyaloshinskii-Moriya interaction are determined from the angular dependence of the ESR spectra using a high-temperature approximation. The obtained results support the site selectivity of the Br substitution suggested from the evolution of lattice parameters and magnetic susceptibility dependent on the Br concentration.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Cs2CuCl4−xBrx	ru_RU
dc.subject	ESR	ru_RU
dc.subject	anisotropic exchange interaction	ru_RU
dc.title	Spin relaxation in Cs2CuCl4-xBrx	ru_RU
dc.type	Articles in international journals and collections	ru_RU