Neutron Scattering of Spin Waves in Square Lattice Quantum Antiferromagnets at high and low energies

Acknowledgements I would like to thank Henrik Rønnow for his supervision of this master thesis work and for introducing me to the field of quantum magnetism. My thanks also to Kruno Prsa from the LQM and Monica Jimenez from the ILL for their precious help in guiding me through my first TAS experiment. I thank also Ross Stewards and Russel Ewings from ISIS for the time they took to introduce me to neutron time of flight. I would like to acknowledge all of the LQM lab members, and particularly Bastien Dalla Piazza, whose excellent explanations helped me understand theoretical concepts. My thanks also to Neda Nikseresht, for her support and advice.