Yes, summoned monsters are subject to Globe of Invulnerability (and Protection from Evil even if not evil), can be dispelled, detect as magical, etc.  Do keep in mind that *called* creatures are not - [see the details of the Conjuration sub-schools][1].

Unless, of course, the Summon spell is already in effect when the globe is created, just like every other spell, per the rules of the Globe.

  [1]: http://www.d20pfsrd.com/magic#TOC-Conjuration