Quantum Oscillations in Hole-Doped Cuprates

Understand

One of the leading challenges of condensed matter physics in the past few decades in an understanding of the high-temperature copper-oxide superconductors.

• While the d-wave character of the superconducting state is well understood, the normal state in the underdoped regime has eluded understanding.
• Here we review the past few years of quantum oscillation measurements performed in the underdoped cuprates that have culminated in an understanding of the normal ground state of these materials.
• A nodal electron pocket created by charge order is found to characterise the normal ground state in YBa2Cu3O6+x and is likely universal to a majority of the cuprate superconductors.