Zhang, G. P.2004-12-132004-12-1320012001http://hdl.handle.net/2003/1856610.17877/DE290R-16201enThe American Physical SocietyPhysical Review Letters530Origin of Giant Optical Nonlinearity in Charge-Transfer-Mott InsulatorsA New Paradigm for Nonlinear Optics10.1103/PhysRevLett.86.2086article (journal)