Atomic-scale imaging of emergent order at a magnetic field-induced Lifshitz transition.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36179031.
- Also identified by DOI 10.1126/sciadv.abo7757 and PMC identifier 9524824.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
The phenomenology and radical changes seen in material properties traversing a quantum phase transition have captivated condensed matter research over the past decades. Strong electronic correlations lead to exotic electronic ground states, including magnetic order, nematicity, and unconventional superconductivity. Providing a microscopic model for these requires detailed knowledge of the electronic structure in the vicinity of the Fermi energy, promising a complete understanding of the physics of the quantum critical point. Here, we demonstrate such a measurement at the surface of Sr<sub>3</sub>Ru<sub>2</sub>O<sub>7</sub>. Our results show that, even in zero field, the electronic structure is strongly <i>C</i><sub>2</sub> symmetric and that a magnetic field drives a Lifshitz transition and induces a charge-stripe order. We track the changes of the electronic structure as a function of field via quasiparticle interference imaging at ultralow temperatures. Our results provide a complete microscopic picture of the field-induced changes of the electronic structure across the Lifshitz transition.