I am applying to a PhD position (theoretical physics, Austria) and the application asks for a letter of motivation, a CV, and a statement of research interests.
Given that I have no publications/employment, my CV is just a brief list of some grades, my skills relevant to the position, and a description of some of my coursework. My research statement describes my interests and experience in the field and gives more details about my research experience and its relevance to the PhD project.
So what is a letter of motivation supposed to contain that has not already been addressed by the other documents? I am not familiar with European academic requirements here.
Many thanks for any guidance.