Publication Date:
2018-07-18
Description:
Author(s): Daichi Takane, Seigo Souma, Kosuke Nakayama, Takechika Nakamura, Hikaru Oinuma, Kentaro Hori, Kouji Horiba, Hiroshi Kumigashira, Noriaki Kimura, Takashi Takahashi, and Takafumi Sato The authors present measurements by soft-x-ray angle-resolved photoemission spectroscopy of hexagonal diboride AlB 2 , which is a cousin material of the well-known high-temperature superconductor MgB 2 . Via accurate determination of the three-dimensional bulk band structure corroborated by first-principles band-structure calculations, the authors demonstrate that AlB 2 displays an exotic Dirac-nodal-line structure with anisotropic Dirac-cone energy band. This intriguing electronic structure provides an excellent platform to study the interplay among the line node, low-energy excitations, and topological transport properties. [Phys. Rev. B 98, 041105(R)] Published Tue Jul 17, 2018
Keywords:
Electronic structure and strongly correlated systems
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics
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