Chen Ning Yang
From the Nobel Foundation:
Yang has worked on various subjects in physics, but has his chief interest in two fields: statistical mechanics and symmetry principles. His B.Sc. thesis: "Group Theory and Molecular Spectra", written under the guidance of Professor Ta-You Wu, his M.Sc. thesis: "Contributions to the Statistical Theory of Order-Disorder Transformations", written under the guidance of Professor J.S. Wang, and his Ph.D. thesis: "On the Angular Distribution in Nuclear Reactions and Coincidence Measurements", written under the guidance of Professor E. Teller, were instrumental in introducing him to these fields.
Nobel Laureate, Physics Prize, 1957