典型文献
Collective modes of type-Ⅱ Weyl fermions with repulsive S-wave interaction
文献摘要:
Three-dimensional type-Ⅱ Weyl fermions possess overtilted cone-like low-energy band dispersion.Unlike the closed ellipsoidal Fermi surface for type-Ⅰ Weyl fermions,the Fermi surface is an open hyperboloid for type-Ⅱ Weyl fermions.We evaluate the spin and density susceptibility of type-Ⅱ Weyl fermions with repulsive S-wave interaction by means of Green's functions.We obtain the particle-hole continuum along the tilted momentum direction and perpendicular to the tilted momentum direction respectively.We find the zero sound mode in some repulsive interaction strengths by numerically solving the pole equations of the susceptibility within the random-phase approximation.
文献关键词:
中图分类号:
作者姓名:
Xun-Gao Wang;Yuan Sun;Liang Liu;Wu-Ming Liu
作者机构:
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Quantum Optics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处:
引用格式:
[1]Xun-Gao Wang;Yuan Sun;Liang Liu;Wu-Ming Liu-.Collective modes of type-Ⅱ Weyl fermions with repulsive S-wave interaction)[J].中国物理B(英文版),2022(02):155-159
A类:
overtilted,hyperboloid
B类:
Collective,modes,type,Weyl,fermions,repulsive,wave,interaction,Three,dimensional,possess,cone,low,energy,band,dispersion,Unlike,closed,ellipsoidal,Fermi,surface,open,evaluate,spin,density,susceptibility,by,means,Green,functions,obtain,particle,hole,continuum,along,momentum,direction,perpendicular,respectively,find,zero,sound,some,strengths,numerically,solving,pole,equations,within,random,phase,approximation
AB值:
0.520792
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