There are many journal articles on the subject of antimicrobial activity of different essential oils. Pubmed is a great resource for finding recent journal articles about the subject. It is the online version of US National Library of Medicine, which is run by US National Institute of Health.
The link is:
I recommend reading both
If the fungal infections to which you are referring effect the feet, use the search terms: essential oils antifungal “Trichophyton mentagrophytes” or “Trichophyton rubrum”.
If the infections are of a more personal nature, then I recommend using the term Candida instead of either of the Trichophyton species. I have attached a link that has information on Candida infections.
I recently read an article that showed a high efficacy of Eucalyptus and peppermint oils at inhibiting fungal growth. In addition, they listed: citronella, geranium, lemongrass, orange, palmarosa and patchouli essential oils.The MIC of eucalyptus, lemongrass, palmarosa and peppermint oils ranged from 0.25 to 10 microliters ml-1 for twelve fungi.
Another article on antifungal essential oils is: http://www.nature.com/articles/srep25371
If the area of the body being treated is sensitive, remember that these essential oils must be diluted and might not be appropriate for all areas of the body.
I wish you the best of luck in your research.