He Tian, Bingchen Deng, et al.
ACS Nano
Black phosphorus exhibits a high degree of band anisotropy. However, we find that its in-plane static screening remains relatively isotropic for momenta relevant to elastic long-range scattering processes. On the other hand, the collective electronic excitations in the system exhibit a strong anisotropy. Band nonparabolicity, due to interband couplings, leads to a plasmon frequency which scales as nβ, where n is the carrier concentration, and β<12. Screening and charge distribution in the out-of-plane direction are also studied using a nonlinear Thomas-Fermi model.
He Tian, Bingchen Deng, et al.
ACS Nano
Tony Low, Vasili Perebeinos, et al.
Physical Review Letters
Karl Berggren, Qiangfei Xia, et al.
Nanotechnology
Javad G. Azadani, Seungjun Lee, et al.
Physical Review B