Heavy d-electron quasiparticle interference and real-space electronic structure of Sr3Ru2O7

Jinho Lee, Milan Peter Allan, M. A. Wang, Jason Farrell, Santiago Andres Grigera, Felix Baumberger, Seamus Davis, Andrew Mackenzie

Research output: Contribution to journalArticlepeer-review

Abstract

The intriguing idea that strongly interacting electrons can generate spatially inhomogeneous electronic liquid-crystalline phases is over a decade old(1-5), but these systems still represent an unexplored frontier of condensed-matter physics. One reason is that visualization of the many-body quantum states generated by the strong interactions, and of the resulting electronic phases, has not been achieved. Soft condensed-matter physics was transformed by microscopies that enabled imaging of real-space structures and patterns. A candidate technique for obtaining equivalent data in the purely electronic systems is spectroscopic imaging scanning tunnelling microscopy (SI-STM). The core challenge is to detect the tenuous but 'heavy' momentum (k)-space components of the many-body electronic state simultaneously with its real-space constituents. Sr3Ru2O7 provides a particularly exciting opportunity to address these issues. It possesses a very strongly renormalized 'heavy' d-electron Fermi liquid(6,7) and exhibits a field-induced transition to an electronic liquid-crystalline phase(8,9). Finally, as a layered compound, it can be cleaved to present an excellent surface for SI-STM.

Original languageEnglish
Pages (from-to)800-804
Number of pages5
JournalNature Physics
Volume5
Issue number11
DOIs
Publication statusPublished - Nov 2009

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