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Crossover in the magnetic response of single-crystalline Ba1-xKxFe2As2 and Lifshitz critical point evidenced by Hall effect measurements

TitleCrossover in the magnetic response of single-crystalline Ba1-xKxFe2As2 and Lifshitz critical point evidenced by Hall effect measurements
Publication TypeJournal Article
Year of Publication2014
AuthorsLiu, Y, Lograsso, TA
JournalPhysical Review B
Volume90
Pagination224508
Date Published12
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000346607200009
Keywordsheavy-electron materials, iron pnictides, order, superconductivity
Abstract

= 1. The dramatic change coincides with the Lifshitz transition occurring around the critical doping x = 0.80, where angle photoemission spectroscopy measurements had confirmed that the electron pocket disappears with excess hole doping in the Ba1-xKxFe2As2 system. It is suggested that the characteristic temperature T* at around 120 similar to 150 K observed in susceptibility and the Hall coefficient, as well as previously reported resistivity data, may indicate an incoherence-coherence crossover in the Ba1-xKxFe2As2 system.

DOI10.1103/PhysRevB.90.224508
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