An open archive of scientific papers including, but not limited to: Accelerator Physics; Atmospheric and Oceanic Physics; Atomic Physics; Biological Physics; Chemical Physics; Classical Physics; Computational Physics; General Physics; Geophysics; History and Philosophy of Physics; Medical Physics; Optics; Physics Education; Physics and Society; Plasma Physics; Popular Physics; Space Physics, and more. In other words, more articles than you can shake a stick at.
Scopus is an abstract and citation database of peer-reviewed research literature, indexing over 19,000 titles from more than 5,000 international publishers. Scopus covers the scientific, technical, medical and social sciences fields as well as arts and humanities. Scopus includes scholarly journals, book series, conference proceedings, trade publications and Open Access journals.