Skip to Main content Skip to Navigation
Journal articles

Thermal Conductivity through the Quantum Critical Point in YbRh$_2$Si$_2$ at Very Low Temperature

Abstract : The thermal conductivity of YbRh$_2$Si$_2$ has been measured down to very low temperatures under field in the basal plane. An additional channel for heat transport appears below 30 mK, both in the antiferromagnetic and paramagnetic states, respectively, below and above the critical field suppressing the magnetic order. This excludes antiferromagnetic magnons as the origin of this additional contribution to thermal conductivity. Moreover, this low temperature contribution prevails a definite conclusion on the validity or violation of the Wiedemann-Franz law at the field-induced quantum critical point.
Document type :
Journal articles
Complete list of metadatas

Cited literature [37 references]  Display  Hide  Download

https://hal-cea.archives-ouvertes.fr/cea-01745399
Contributor : Jérôme Planès <>
Submitted on : Monday, October 5, 2020 - 3:31:16 PM
Last modification on : Wednesday, October 14, 2020 - 3:53:29 AM

File

Taup1.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Mathieu Taupin, Georg Knebel, T. D. Matsuda, Gerard Lapertot, Y. Machida, et al.. Thermal Conductivity through the Quantum Critical Point in YbRh$_2$Si$_2$ at Very Low Temperature. Physical Review Letters, American Physical Society, 2015, 115, pp.046402. ⟨10.1103/PhysRevLett.115.046402⟩. ⟨cea-01745399⟩

Share

Metrics

Record views

326

Files downloads

11