Work

Universal behavior of spin-mediated energy transport in S = 1/2 chain cuprates: BaCu 2 Si 2 O 7 as an example

Year: 2003

Type: article

Abstract: The thermal conductivity κ of the spin-(1/2) chain cuprate BaCu 2 Si 2 O 7 was measured along different crystallographic directions in the temperature region between 0.5 and 300 K. The thermal conductivity along the chain direction considerably exceeds that along perpendicular directions. Near the antiferromagnetic transition at T N = 9.2 K the data indicates enhanced scattering of phonons by critical fluctuations in the spin system. A comparison of the data above T N with available results on similar materials reveals similarities in the main features of the temperature dependence of the mean free path of itinerant spin excitations. This universal behavior is most likely caused by the spin-lattice interaction.

Source: Europhysics Letters (EPL)

DOI: 10.1209/epl/i2003-00384-1

Authors: A. V Sologubenko, H. R Ott, G Dhalenne, A Revcolevschi

Institutions: ETH Zurich, Laboratory for Solid State Physics, Université Paris-Sud

Language: English

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

OpenAlex ID: W2065899415

FWCI: 3.353

Cites: 26

Cited by: 37

Related to: 10