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Prediction of superconducting properties of CaB2 using anisotropic Eliashberg theory
Hyoung Joon Choi, Steven G. Louie, Marvin L. Cohen
Superconducting properties of hypothetical simple hexagonal CaB2 are studied using the fully anisotropic Eliashberg formalism based on electronic and phononic structures and electr…
Excitonic Effects on the Optical Response of Graphene and Bilayer Graphene
Li Yang, Jack Deslippe, Cheol-Hwan Park +2
We present first-principles calculations of many-electron effects on the optical response of graphene, bilayer graphene, and graphite employing the GW-Bethe Salpeter equation appro…
Landau Levels and Quantum Hall Effect in Graphene Superlattices
Cheol-Hwan Park, Young-Woo Son, Li Yang +2
We show that, when graphene is subjected to an appropriate one-dimensional external periodic potential, additional branches of massless fermions are generated with nearly the same…
First-Principles Study of Electron Linewidths in Graphene
Cheol-Hwan Park, Feliciano Giustino, Catalin D. Spataru +2
We present first-principles calculations of the linewidths of low-energy quasiparticles in n-doped graphene arising from both the electron-electron and the electron-phonon interact…
Calcium-Decorated Carbon Nanotubes for High-Capacity Hydrogen Storage
Hoonkyung Lee, Jisoon Ihm, Marvin L. Cohen +1
Using first-principles calculations, we perform a search for high-capacity hydrogen storage media based on individually dispersed calcium atoms on doped or defective carbon nanotub…