8 papers
Linear and nonlinear optical responses in the chiral multifold semimetal RhSi
Zhuoliang Ni, B. Xu, M. A. Sanchez-Martinez +8
Chiral topological semimetals are materials that break both inversion and mirror symmetries. They host interesting phenomena such as the quantized circular photogalvanic effect (CP…
Optical signatures of multifold fermions in the chiral topological semimetal CoSi
B. Xu, Z. Fang, M. A. Sánchez-Martínez +12
We report the optical conductivity in high-quality crystals of the chiral topological semimetal CoSi, which hosts exotic quasiparticles known as multifold fermions. We find that th…
Ideal near-Dirac triple-point semimetal in III-V semiconductor alloys
Zhenyao Fang, Heng Gao, Jörn W. F. Venderbos +1
Despite the growing interest in topological materials, the difficulty of experimentally synthesizing and integrating them with other materials has been one of the main barriers res…
Topological Semimetals from first-principles
Heng Gao, Jörn W. F. Venderbos, Youngkuk Kim +1
We review recent theoretical progress in the understanding and prediction of novel topological semimetals. Topological semimetals define a class of gapless electronic phases exhibi…
Nematic superconductivity stabilized by density wave fluctuations: Possible application to twisted bilayer graphene
Vladyslav Kozii, Hiroki Isobe, Jörn W. F. Venderbos +1
Nematic superconductors possess unconventional superconducting order parameters that spontaneously break rotational symmetry of the underlying crystal. In this work we propose a me…
Higher angular momentum band inversions in two dimensions
Jörn W. F. Venderbos, Yichen Hu, C. L. Kane
We study a special class of topological phase transitions in two dimensions described by the inversion of bands with relative angular momentum higher than 1. A band inversion of th…