Directory of Open Access JournalsFrom Wikipedia, "Open Access Journals", 9/22/17. Definition of "Open access (OA) journals are scholarly journals that are available online to the reader without financial, legal, or technical barriers other than those inseparable from gaining access to the internet". To find journals, erase the words "search DOAJ" and type the word "physics" in the search box. To begin your search, press the search button after typing.