Fingerprints of field-induced Berezinskii-Kosterlitz-Thouless transition in quasi-two-dimensional S=1/2 Heisenberg magnets Cu(en)(H2O)(2)SO4 and Cu(tn)Cl-2

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10324607" target="_blank" >RIV/00216208:11320/16:10324607 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jmmm.2015.12.025" target="_blank" >http://dx.doi.org/10.1016/j.jmmm.2015.12.025</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2015.12.025" target="_blank" >10.1016/j.jmmm.2015.12.025</a>

Result language

angličtina

Original language name

Fingerprints of field-induced Berezinskii-Kosterlitz-Thouless transition in quasi-two-dimensional S=1/2 Heisenberg magnets Cu(en)(H2O)(2)SO4 and Cu(tn)Cl-2

Original language description

Organo-metallic compounds Cu(en)(H2O)(2)SO4 (en=C2H8N2) and Cu(tn)Cl-2 (tn=C3H10N2) representing S = 1/2 quasi-two-dimensional Heisenberg antiferromagnets with an effective intra-layer exchange coupling J/k(B) approximate to 3 K, have been examined by specific heat measurements at temperatures down to nominally 50 mK and magnetic fields up to 14 T. A comparative analysis of magnetic specific heat in zero magnetic field revealed nearly identical contribution of short-range magnetic correlations and significant differences were observed at lowest temperatures. A phase transition to long-range order was observed in Cu(en)(H2O)(2)SO4 at T-c=0.9 K while hidden in Cu(tn)Cl-2. A response of both compounds to the application of magnetic field has rather universal features characteristic for a field-induced Berezinskii-Kosterlitz-Thouless transition theoretically predicted for ideal two-dimensional magnets.

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

2016

Confidentiality

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

Name of the periodical

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

—

Volume of the periodical

404

Issue of the periodical within the volume

Květen

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

5

Pages from-to

53-57

UT code for WoS article

000367482500008

EID of the result in the Scopus database

2-s2.0-84949492028