Including co-authored work in my thesis
You seem to be concerned that inclusion of experimental results will mean your dissertation isn't original. Yet, you could include such results whilst alleviating your concerns. For instance, you could present experimental results and explain that those results were carried out by your co-author. You could also include a fresh analysis of those results or (with attribution) regurgitate existing analysis. This approach ensures your dissertation is self-contained and surely provides the reader with a better understanding.