There are several bands that use the name Arkham. 1) A Chicago-based hardcore punk band formed in 2010 and currently signed to Angst In the Industry Records. They released their debut EP, Retaliation in January, 2012. 2) A french dark ambient/black metal band from Toulouse, France, formed in 1994.
During 1996-2004 they released:
1996 - Obscurs Et Éternels (demo)
1997 - Promo-Tape 1897 (demo)
1997 - Rehearsal 1997 (demo)
1999 - Arkham / Nuit Noire (split with Nuit Noire)


Read more about Arkham on Last.fm.