Both electron and hole Dirac cone states in Ba(FeAs)2 confirmed by magnetoresistance

Khuong K. Huynh, Yoichi Tanabe, Katsumi Tanigaki

Research output: Contribution to journalArticle

93 Citations (Scopus)

Abstract

Quantum transport of Dirac cone states in the iron pnictide Ba(FeAs) 2 with a d-multiband system is studied by using single crystal samples. Transverse magnetoresistance develops linearly against the magnetic field at low temperatures. The transport phenomena are interpreted in terms of the zeroth Landau level by applying the theory predicted by Abrikosov. The results of the semiclassical analyses of a two carrier system in a low magnetic field limit show that both the electron and hole reside as the high mobility states. Our results show that pairs of electron and hole Dirac cone states must be taken into account for an accurate interpretation in iron pnictides, which is in contrast with previous studies.

Original languageEnglish
Article number217004
JournalPhysical review letters
Volume106
Issue number21
DOIs
Publication statusPublished - 2011 May 25

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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