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연구기관
기초과학연구소
Journal papers
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Electric-Field-Driven Spin Resonance by On-Surface Exchange Coupling to a Single-Atom Magnet
Title
Electric-Field-Driven Spin Resonance by On-Surface Exchange Coupling to a Single-Atom Magnet
Authors
Phark S.-H.
;
Bui H.T.
;
Ferrón A.
;
Fernández-Rossier J.
;
Reina-Gálvez J.
;
Wolf C.
;
Wang Y.
;
Yang K.
;
Heinrich A.J.
;
Lutz C.P.
Ewha Authors
박수현
;
Andreas Heinrich
;
Christoph Wolf
SCOPUS Author ID
박수현
; Andreas Heinrich
; Christoph Wolf
Issue Date
2023
Journal Title
Advanced Science
ISSN
2198-3844
Citation
Advanced Science vol. 10, no. 27
Keywords
atom manipulation
;
electron spin resonance
;
Rabi rate
;
scanning tunneling microscopy
;
single spin qubit
;
single-atom magnet
Publisher
John Wiley and Sons Inc
Indexed
SCIE; SCOPUS
Document Type
Article
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.
DOI
10.1002/advs.202302033
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