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Thermal Transport in Strongly Correlated Rare-Earth Intermetallic Compounds

Thermal Transport in Strongly Correlated Rare-Earth Intermetallic Compounds

Paperback

Series: Springer Theses

Technology & EngineeringPhysics

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ISBN10: 3319819100
ISBN13: 9783319819105
Publisher: Springer
Published: May 30 2018
Pages: 118
Weight: 0.46
Height: 0.30 Width: 6.10 Depth: 9.25
Language: English
This thesis explores thermal transport in selected rare-earth-based intermetallic compounds to answer questions of great current interest. It also sheds light on the interplay of Kondo physics and Fermi surface changes.
By performing thermal conductivity and electrical resistivity measurements at temperatures as low as 25mK, the author demonstrates that the Wiedemann-Franz law, a cornerstone of metal physics, is violated at precisely the magnetic-field-induced quantum critical point of the heavy-fermion metal YbRh2Si2. This first-ever observation of a violation has dramatic consequences, as it implies a breakdown of the quasiparticle picture.

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