Hello, I am a post-doc in condensed matter theory (about to finish my 3rd year of my first post-doc) who is about to start applying for faculty positions. I am not sure who to use for my three references. Of course I will use my current adviser. Is it typical/ok to use my PhD adviser as well? For my third I consider using an experimentalist from my current department who I have collaborated with some. Any guidance would be appreciated. Thanks.