Experimental Study of the Thermal Transport in CsNiF3 - An S=1 Quantum Chain

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F12%3A00440208" target="_blank" >RIV/68081723:_____/12:00440208 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Experimental Study of the Thermal Transport in CsNiF3 - An S=1 Quantum Chain

Original language description

The heat transport in a single-crystal of CsNiF3 has been performed in the temperature range from 2 K to 7 K in a zero magnetic field, B = 0, as well as in sufficiently large magnetic fields, B = 6 T and 9 T, inducing the ferromagnetic ground state alongthe hard c-axis. CsNiF3 represents an S = 1 quasi-one-dimensional XY ferromagnet with the intra-chain exchange coupling J/k(B) approximate to 24 K, single-ion anisotropy D/k(B) approximate to 8 K, and ordering temperature T-N = 2.7 K. Comparison of thephonon and magnon velocities suggests that phonons are the main heat carriers in this magnetic insulator. The thermal conductivity in B = 0 was analysed in the frame of a standard Debye model. The temperature dependence of the effective phonon mean freepath was calculated from the experimental data, and the enhancement of the phonon mean free path in B not equal 0 was obtained, indicating that magnons act as scattering centers for phonons.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ACTA PHYSICA POLONICA A

ISSN

0587-4246

e-ISSN

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Volume of the periodical

121

Issue of the periodical within the volume

5-6

Country of publishing house

PL - POLAND

Number of pages

4

Pages from-to

1098-1101

UT code for WoS article

000304789500033

EID of the result in the Scopus database

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