2010/12/31 by Khuong Kim Huynh, Khuong K. Huynh, Yoichi Tanabe +1 · 137 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Dirac (video compression format) #Electron #Field (mathematics) #Iron-based superconductors research #Magnetic field #Magnetoresistance #Physics #Quantum #Quantum mechanics #Rare-earth and actinide compounds #Semiclassical physics #Topological Materials and Phenomena #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.106.217004
published in Physical Review Letters 106(21), 217004 (American Physical Society) · 4 pages, 2 figures
openalex publication_date 2011/05/25 · arxiv created 2011/06/22 · arxiv updated 2011/06/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.