Quantum interference in superposed lattices

Yejun Feng*, Yishu Wang, T F Rosenbaum, P B Littlewood, Hua Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Downloads (Pure)

Abstract

Charge transport in solids at low temperature reveals a material's mesoscopic properties and structure. Under a magnetic field, Shubnikov-de Haas (SdH) oscillations inform complex quantum transport phenomena that are not limited by the ground state characteristics and have facilitated extensive explorations of quantum and topological interest in two- and three-dimensional materials. Here, in elemental metal Cr with two incommensurately superposed lattices of ions and a spin-density-wave ground state, we reveal that the phases of several low-frequency SdH oscillations in [Formula: see text] and [Formula: see text] are no longer identical but opposite. These relationships contrast with the SdH oscillations from normal cyclotron orbits that maintain identical phases between [Formula: see text] and [Formula: see text] . We trace the origin of the low-frequency SdH oscillations to quantum interference effects arising from the incommensurate orbits of Cr's superposed reciprocal lattices and explain the observed [Formula: see text]-phase shift by the reconnection of anisotropic joint open and closed orbits.
Original languageEnglish
Article numbere2315787121
Number of pages8
JournalProceedings of the National Academy of Sciences of the United States of America
Volume121
Issue number7
Early online date5 Feb 2024
DOIs
Publication statusPublished - 13 Feb 2024

Keywords

  • Incommensurate reciprocal lattices
  • Fermiology
  • Quantum oscillations
  • π-phase shift

Fingerprint

Dive into the research topics of 'Quantum interference in superposed lattices'. Together they form a unique fingerprint.

Cite this