Csanyi, G and Pickard, CJ and Simons, BD and Needs, RJ (2006) Graphite intercalation compounds under pressure. (Unpublished)Full text not available from this repository.
Motivated by recent experimental work, we use first-principles density functional theory methods to conduct an extensive search for low enthalpy structures of C$_6$Ca under pressure. As well as a range of buckled structures, which are energetically competitive over an intermediate range of pressures, we show that the high pressure system ($\gtrsim 18$ GPa) is unstable towards the formation of a novel class of layered structures, with the most stable compound involving carbon sheets containing five- and eight-membered rings. As well as discussing the energetics of the different classes of low enthalpy structures, we comment on the electronic structure of the high pressure compound and its implications for superconductivity.
|Uncontrolled Keywords:||cond-mat.supr-con cond-mat.supr-con cond-mat.mtrl-sci|
|Divisions:||Div C > Applied Mechanics|
|Depositing User:||Cron job|
|Date Deposited:||16 Jul 2015 14:24|
|Last Modified:||09 Oct 2015 06:01|