Kuwata-Gonokami, MakotoNagai, MasayaShimano, Ryo2004-12-142004-12-1420012001http://hdl.handle.net/2003/1876910.17877/DE290R-6577enThe American Physical SocietyPhysical Review Letters530Electron-Hole Droplet Formation in Direct-Gap Semiconductors Observed by Mid-Infrared Pump-Probe Spectroscopy10.1103/PhysRevLett.86.5795article (journal)