LEADER 03547nam 22005535 450 001 9910254616403321 005 20200701165956.0 010 $a3-319-39543-2 024 7 $a10.1007/978-3-319-39543-2 035 $a(CKB)3710000000765455 035 $a(DE-He213)978-3-319-39543-2 035 $a(MiAaPQ)EBC4603158 035 $a(PPN)194513343 035 $a(EXLCZ)993710000000765455 100 $a20160720d2016 u| 0 101 0 $aeng 135 $aurnn|008mamaa 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aThermal Transport in Strongly Correlated Rare-Earth Intermetallic Compounds /$fby Heike Pfau 205 $a1st ed. 2016. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2016. 215 $a1 online resource (XXI, 118 p. 46 illus., 32 illus. in color.) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 311 $a3-319-39542-4 320 $aIncludes bibliographical references at the end of each chapters. 327 $aIntroduction -- Theoretical Models -- Experimental Techniques for Transport Measurements -- The Wiedemann-Franz Law in YbRh2Si2 -- Kondo Lattices in Magnetic Field -- The Superconducting Order Parameter of LaPt4Ge12 -- Summary and Outlook. 330 $aThis thesis explores thermal transport in selected rare-earth-based intermetallic compounds to answer questions of great current interest. It also sheds light on the interplay of Kondo physics and Fermi surface changes. By performing thermal conductivity and electrical resistivity measurements at temperatures as low as 25mK, the author demonstrates that the Wiedemann?Franz law, a cornerstone of metal physics, is violated at precisely the magnetic-field-induced quantum critical point of the heavy-fermion metal YbRh2Si2. This first-ever observation of a violation has dramatic consequences, as it implies a breakdown of the quasiparticle picture. Utilizing an innovative technique to measure low-temperature thermal transport isothermally as a function of the magnetic field, the thesis interprets specific, partly newly discovered, high-field transitions in CeRu2Si2 and YbRh2Si2 as Lifshitz transitions related to a change in the Fermi surface. Lastly, by applying this new technique to thermal conductivity measurements of the skutterudite superconductor LaPt4Ge12, the thesis proves that the system is a conventional superconductor with a single energy gap. Thus, it refutes the widespread speculations about unconventional Cooper pairing in this material. . 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aSuperconductivity 606 $aSuperconductors 606 $aMetals 606 $aStrongly Correlated Systems, Superconductivity$3https://scigraph.springernature.com/ontologies/product-market-codes/P25064 606 $aMetallic Materials$3https://scigraph.springernature.com/ontologies/product-market-codes/Z16000 615 0$aSuperconductivity. 615 0$aSuperconductors. 615 0$aMetals. 615 14$aStrongly Correlated Systems, Superconductivity. 615 24$aMetallic Materials. 676 $a546.41 700 $aPfau$b Heike$4aut$4http://id.loc.gov/vocabulary/relators/aut$0814243 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910254616403321 996 $aThermal Transport in Strongly Correlated Rare-Earth Intermetallic Compounds$91818928 997 $aUNINA