Comment on "Magnetic-Field-Induced Low-Energy Spin Excitations in YBa2Cu4O8 Measured by High Field Gd3+ Electron Spin Resonance"

Clark, W. G.Kitaoka, Y.Zheng, G.-Q.2004-12-032004-12-0320012001http://hdl.handle.net/2003/163610.17877/DE290R-6477enThe American Physical SocietyPhysical Review Letters530Comment on "Magnetic-Field-Induced Low-Energy Spin Excitations in YBa2Cu4O8 Measured by High Field Gd3+ Electron Spin Resonance"10.1103/PhysRevLett.87.209701article (journal)