Intro; Supervisors' Foreword; Abstract; Acknowledgements; Contents; 1 Introduction; 1.1 Electrons in Metals; 1.2 Landau's Fermi Liquid; References; 2 Uniaxial Stress Technique; 2.1 Introduction; 2.2 Stress and Strain; 2.3 Finite Element Method; 2.4 Uniaxial Stress and Strain Techniques; 2.4.1 Indirect Determination Using Ehrenfest Relations; 2.4.2 Anvil-Based Pressure Cells; 2.4.3 Sample on Piezo Stack; 2.4.4 Other Techniques; 2.5 New Uniaxial Stress Cell; 2.5.1 Sample Mounting; 2.5.2 Sample Mounting Models; 2.6 Recommended Working Parameters; 2.7 Conclusions; References

3 The Physics of Sr2RuO4 Approaching a Van Hove Singularity3.1 Introduction; 3.2 Background Physics for Sr2RuO4; 3.2.1 Fermi Liquid Properties of Sr2 RuO4; 3.2.2 Superconductivity of Sr2 RuO4; 3.2.3 Van Hove Singularities and Lifshitz Transitions and Their Connection to Sr2 RuO4; 3.3 Experimental Methods; 3.4 Results and Discussions; 3.4.1 Superconducting Properties Under Strain; 3.4.2 Normal State Properties Under Strain; 3.5 Conclusions; References; 4 Quantum Criticality and Metamagnetism of Strained Sr3Ru2O7; 4.1 Introduction; 4.2 Background Physics for Sr3Ru2O7

4.2.1 Itinerant Metamagnetism4.2.2 Quantum Criticality; 4.2.3 Novel Ordered Phase; 4.2.4 Latest Developments and Motivation; 4.3 Experimental Methods; 4.3.1 Sample Preparation; 4.3.2 Resistivity Measurements; 4.3.3 Magnetic Measurements; 4.3.4 Strain Transmission; 4.3.5 Low Temperature Cryostat; 4.4 Results and Discussions; 4.4.1 Magnetoresistance; 4.4.2 Metamagnetism; 4.4.3 Strain Ramps; 4.4.4 Higher Temperatures; 4.4.5 Discussion; 4.5 Conclusions; References; 5 Conclusions and Outlook; References; A Details of the Dual End Current Source with Active Common-Mode Rejection

Appendix B Supplementary Materials for Sr2RuO4 Under StrainB.1 Resistivity Temperature Exponent Analysis; Appendix C Phase Boundaries from the Derivatives of Resistivity in Sr3Ru2O7; Appendix D AC Susceptibility Coils Simulation; References