There are multiple artists with this name:
1) Atomic is a high-energy jazz band from Scandinavia
2) Atomic is an indie pop band from Germany.
3) Atomic is a Czech thrash metal band.
4) Atomic was a Hungarian trash metal band at the beginning of the 1990s
5) There is also another Atomic in Czech Republic, playing thrash metal.
6) Atomic is one of the aliases used by DJ Sures.

1)
Atomic is a high-energy jazz band from Scandinavia, renowned for their explosive live performances. Paal Nilssen-Love (drums), Ingebrikt Haker Flaten (double bass), Havard Wiik (piano), Magnus Broo (trumpet) and Fredrik Ljunqvist (reeds) are all accomplished players on the Norwegian/Swedish scene.

Discography:
Feet Music (Jazzland Acoustic, 2002)
Boom Boom (Jazzland Acoustic, 2003)
The Bikini Tapes (Three-disc live collection)
Happy New Ears! (Jazzland, 2006)
Retrograde (Jazzland, 2008) (Double-album + Live in Seattle CD)

2)
Atomic is an indie pop band from Germany.

3)
Atomic is a Czech thrash metal band.

4)
Atomic was a Hungarian trash metal band at the beginning of the 1990s.

Discography:
Atomic (1994)

5)
There is also another Atomic in Czech Republic, playing thrash metal.

Discography:
Nuclear Thrash (1991)
Breakpoint (1993)
Labyrinth (1999).

6)
Atomic is one of the aliases used by dj sures.