@article{deddd16431854b7490cb0bbdd05eb23f,
title = "Coulomb scattering rates of excited states in monolayer electron-doped germanene",
abstract = "Excited conduction electrons, conduction holes, and valence holes in monolayer electron-doped germanene exhibit unusual Coulomb decay rates. The deexcitation processes are studied using the screened exchange energy. They might utilize the intraband single-particle excitations (SPEs), the interband SPEs, and the plasmon modes, depending on the quasiparticle states and the Fermi energies. The low-lying valence holes can decay through the undamped acoustic plasmon, so that they present very fast Coulomb deexcitations, nonmonotonous energy dependence, and anisotropic behavior. However, the low-energy conduction electrons and holes are similar to those in a two-dimensional electron gas. The higher-energy conduction states and the deeper-energy valence ones behave similarly in the available deexcitation channels and have a similar dependence of decay rate on the wave vector k.",
author = "Shih, {Po Hsin} and Chiu, {Chih Wei} and Wu, {Jhao Ying} and Do, {Thi Nga} and Lin, {Ming Fa}",
note = "Funding Information: This material is based upon work supported by the Air Force Office of Scientific Research under Award No. FA2386-18-1-0120. We would also like to acknowledge the financial support from the Ministry of Science and Technology of the Republic of China (Taiwan) under Grant No. MOST 105-2112-M-006-002 -MY3. Funding Information: This material is based upon work supported by the Air Force Office of Scientific Research under Award No. FA2386-18-1-0120. We would also like to acknowledge the financial support from the Ministry of Science and Technology of the Republic of China (Taiwan) under Grant No. MOST 105-2112-M-006-002 -MY3. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = may,
day = "3",
doi = "10.1103/PhysRevB.97.195302",
language = "English",
volume = "97",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "19",
}