Condensed matter Magnetism Condensed Matter Physics 31 Spectroscopy 9 Spectrum analysis 9 Superconductivity 8 Superconductors 8 Quantum Physics 7 Quantum physics 7 Nanotechnology 6 Mathematical physics 5 Optical Materials 5 Optical materials 5 Classical Electrodynamics 4 Electrodynamics 4 Engineering 4 Laser 4 Lasers 4 Nanophysics 4 Nanoscience 4 Spintronics 4 Surfaces (Technology) 4 Surfaces, Interfaces and Thin Film 4 Technology and Engineering 4 Thin films 4 Characterization and Analytical Technique 3 Complex Systems 3 Electronics 3 Electronics and Microelectronics, Instrumentation 3 Mathematical Methods in Physics 3