English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present experiments on the thermal transport in the spin-1/2 chaincompound copper pyrazine dinitrate Cu(C_4 H_4 N_2)(NO_3)_2. The heatconductivity shows a surprisingly strong dependence on the applied magneticfield B, characterized at low temperatures by two main features. The first oneappearing at low B is a characteristic dip located at mu_B B ~ k_B T, that mayarise from Umklapp scattering. The second one is a plateau-like feature in thequantum critical regime, mu_B |B-B_c| < k_B T, where B_c is the saturationfield at T=0. The latter feature clearly points towards a momentum and fieldindependent mean free path of the spin excitations, contrary to theoreticalexpectations.Comment: 4 pages, 4 figure

physical review letters

Magnetothermal Transport in the Spin-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mfrac><mml:mn>1</mml:mn><mml:mn>2</mml:mn></mml:mfrac></mml:math>Chains of Copper Pyrazine Dinitrate

Magnetothermal Transport in the Spin-12Chains of Copper Pyrazine Dinitrate