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Electric-Field-Driven Spin Resonance by On-Surface Exchange Coupling to a Single-Atom Magnet

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Title
Electric-Field-Driven Spin Resonance by On-Surface Exchange Coupling to a Single-Atom Magnet
Author(s)
Soo-hyon Phark; Hong Thi Bui; Ferrón, Alejandro; Fernández-Rossier, Joaquin; Jose Reina-Gálvez; Christoph Wolf; Yu Wang; Yang, Kai; Andreas J. Heinrich; Lutz, Christopher P.
Publication Date
2023-09
Journal
Advanced Science, v.10, no.27
Publisher
Wiley-VCH Verlag
Abstract
Coherent control of individual atomic and molecular spins on surfaces has recently been demonstrated by using electron spin resonance (ESR) in a scanning tunneling microscope (STM). Here, a combined experimental and modeling study of the ESR of a single hydrogenated Ti atom that is exchange-coupled to a Fe adatom positioned 0.6–0.8 nm away by means of atom manipulation is presented. Continuous wave and pulsed ESR of the Ti spin show a Rabi rate with two contributions, one from the tip and the other from the Fe, whose spin interactions with Ti are modulated by the radio-frequency electric field. The Fe contribution is comparable to the tip, as revealed by its dominance when the tip is retracted, and tunable using a vector magnetic field. The new ESR scheme allows on-surface individual spins to be addressed and coherently controlled without the need for magnetic interaction with a tip. This study establishes a feasible implementation of spin-based multi-qubit systems on surfaces. © 2023 The Authors. Advanced Science published by Wiley-VCH GmbH.
URI
https://pr.ibs.re.kr/handle/8788114/14028
DOI
10.1002/advs.202302033
ISSN
2198-3844
Appears in Collections:
Center for Quantum Nanoscience(양자나노과학 연구단) > 1. Journal Papers (저널논문)
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