منابع مشابه
Topological Superconductivity in Dirac Semimetals.
Dirac semimetals host bulk band-touching Dirac points and a surface Fermi loop. We develop a theory of superconducting Dirac semimetals. Establishing a relation between the Dirac points and the surface Fermi loop, we clarify how the nontrivial topology of Dirac semimetals affects their superconducting state. We note that the unique orbital texture of Dirac points and a structural phase transiti...
متن کاملTopological semimetals and topological insulators in rare earth monopnictides
Minggang Zeng†1,2, Chen Fang†3, Guoqing Chang, Yu-An Chen, Timothy Hsieh, Arun Bansil, Hsin Lin∗1,2 and Liang Fu∗∗3 Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore 117546 Department of Physics, National University of Singapore, Singapore 117542 Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,...
متن کاملMagnonic analogs of topological Dirac semimetals
In electronic topological Dirac semimetals (DSMs) the conduction and valence bands touch at discrete points in the Brillouin zone and formDirac cones. They are robust against spin–orbit interaction (SOI) and protected by crystal symmetries. They can be driven to different topological phases by breaking the symmetries. In the low-temperature quantummagnetic systems themagnon dispersions have sim...
متن کاملDisordered Weyl Semimetals and Their Topological Family.
We develop a topological theory for disordered Weyl semimetals in the framework of the gauge invariance of the replica formalism and boundary-bulk correspondence of Chern insulators. An anisotropic topological θ term is analytically derived for the effective nonlinear σ model. It is this nontrivial topological term that ensures that the bulk transverse transport of Weyl semimetals is robust aga...
متن کاملTopological semimetals with Riemann surface states
Riemann surfaces are geometric constructions in complex analysis that may represent multi-valued holomorphic functions using multiple sheets of the complex plane. We show that the energy dispersion of surface states in topological semimetals can be represented by Riemann surfaces generated by holomorphic functions in the two-dimensional momentum space, whose constant height contours correspond ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2018
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.98.241103