LEADER 03924nam 22006255 450 001 9910151856103321 005 20200702092315.0 010 $a3-319-48646-2 024 7 $a10.1007/978-3-319-48646-8 035 $a(CKB)3710000000952917 035 $a(DE-He213)978-3-319-48646-8 035 $a(MiAaPQ)EBC4744618 035 $a(PPN)197138659 035 $a(EXLCZ)993710000000952917 100 $a20161116d2017 u| 0 101 0 $aeng 135 $aurnn|008mamaa 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aFermi Surface and Quantum Critical Phenomena of High-Temperature Superconductors /$fby Carsten Matthias Putzke 205 $a1st ed. 2017. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2017. 215 $a1 online resource (XV, 162 p. 104 illus., 23 illus. in color.) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 311 $a3-319-48645-4 320 $aIncludes bibliographical references. 327 $aIntroduction to Iron Based Superconductors -- Theory -- Experimental Setup -- BaFe2(As1-xPx)2-A Quantum Critical Superconductor -- LiFeAs and LiFeP-Stoichiometric Superconductors -- YBa2Cu408 -- Numerical Phase Sensitive Detection in Matlab -- Publications -- Bibliography. 330 $aThis thesis provides a detailed introduction to quantum oscillation measurement and analysis and offers a connection between Fermi surface properties and superconductivity in high-temperature superconductors. It also discusses the field of iron-based superconductors and tests the models for the appearance of nodes in the superconducting gap of a 111-type pnictide using quantum oscillation measurements combined with band structure calculation. The same measurements were carried out to determine the quasiparticle mass in BaFe2(As1-xPx)2, which is strongly enhanced at the expected quantum critical point. While the lower superconducting critical field shows evidence of quantum criticality, the upper superconducting critical field is not influenced by the quantum critical point. These findings contradict conventional theories, demonstrating the need for a theoretical treatment of quantum critical superconductors, which has not been addressed to date. The quest to discover similar evidence in the cuprates calls for the application of extreme conditions. As such, quantum oscillation measurements were performed under high pressure in a high magnetic field, revealing a negative correlation between quasiparticle mass and superconducting critical temperature. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aSuperconductivity 606 $aSuperconductors 606 $aQuantum theory 606 $aOptical materials 606 $aElectronics$xMaterials 606 $aStrongly Correlated Systems, Superconductivity$3https://scigraph.springernature.com/ontologies/product-market-codes/P25064 606 $aQuantum Physics$3https://scigraph.springernature.com/ontologies/product-market-codes/P19080 606 $aOptical and Electronic Materials$3https://scigraph.springernature.com/ontologies/product-market-codes/Z12000 615 0$aSuperconductivity. 615 0$aSuperconductors. 615 0$aQuantum theory. 615 0$aOptical materials. 615 0$aElectronics$xMaterials. 615 14$aStrongly Correlated Systems, Superconductivity. 615 24$aQuantum Physics. 615 24$aOptical and Electronic Materials. 676 $a537.6231 700 $aPutzke$b Carsten Matthias$4aut$4http://id.loc.gov/vocabulary/relators/aut$0993710 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910151856103321 996 $aFermi Surface and Quantum Critical Phenomena of High-Temperature Superconductors$92275359 997 $aUNINA