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Complete reversal of the atomic unquenched orbital moment by a single electron

Physics

Complete reversal of the atomic unquenched orbital moment by a single electron

R. Rejali, D. Coffey, et al.

This groundbreaking research reveals how a single iron atom can have its spin and orbital moments independently controlled. By positioning the atom on a nitrogen site within a Cu₂N lattice, the team presents a novel approach to manipulating atomic properties through electron tunneling. This fascinating work was conducted by Rasa Rejali, David Coffey, Jeremie Gobeil, Jhon W. González, Fernando Delgado, and Alexander F. Otte.

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Playback language: English
Abstract
This research demonstrates independent control over the spin and orbital degrees of freedom of a single iron (Fe) atom. By placing the Fe atom on a nitrogen site of a Cu₂N lattice, a system with large zero-field splitting and an unquenched uniaxial orbital moment is created. A full reversal of the orbital moment is achieved through a single-electron tunneling event, leaving the spin unchanged. Density functional theory and first-principles multiplet calculations support these findings.
Publisher
npj Quantum Materials
Published On
Aug 27, 2020
Authors
Rasa Rejali, David Coffey, Jeremie Gobeil, Jhon W. González, Fernando Delgado, Alexander F. Otte
Tags
spin control
orbital degrees of freedom
iron atom
Cu₂N lattice
electron tunneling

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