Create a dir under /usr/share/fonts/ and copy the font there.
Run:
fc-cache -fv
xlsfonts will output a list of fonts with names that can be used for emacs and other programs.
I Emacs i use:
-unknown-DejaVu Sans Mono-normal-normal-normal-*-19-*-*-*-m-0-iso10646-1 -unknown-Droid Sans Mono-normal-normal-normal-*-19-*-*-*-m-0-iso10646-1 -unknown-Ubuntu Mono-bold-normal-normal-*-19-*-*-*-m-0-iso10646-1
Try some fonts in emacs and get the exact name by:
m-x describe-font