Has it been researched whether face centered cubic carbon is stable?

According to this paper, carbon has a face centered cubic phase which is a metallic form. My question is:

Has it been researched whether face centered cubic carbon is stable?

Reasons why I'm interested in this question can be found in the edit history of this post.

• Thinks, I think this was a good edit. I guess you have Matter Modelling Stack Exchange expertise that I don't have. I have to just trust your judgement because I cannot know how to make a question really good myself. Feb 16 '21 at 20:53
• This SE is related to computational modeling of matter, not a Materials Science or Materials Chemistry SE. Therefore, I have voted to close this question as out of scope. @Timothy's questions do not belong on this SE. Feb 17 '21 at 7:01
• I will admit, this is closer to being on topic than most other questions, but this is still the type of question which should be moved to Chemistry or Physics at the very least. Feb 17 '21 at 13:49
• @TristanMaxson, yes, this question could be answered with modeling even if the question isn't about it directly! Feb 17 '21 at 16:55

One of the papers citing the paper you linked is this paper : G. Murrieta, A. Tapia, and R. de Coss, Structural stability of carbon in the face-centered-cubic (Fm$$\bar{3}$$m) phase, Carbon 4, 771-774 (2004). It concludes with: