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000858679 1001_ $$00000-0003-1443-6780$$aSenkovskiy, Boris V.$$b0$$eCorresponding author
000858679 245__ $$aBoron-Doped Graphene Nanoribbons: Electronic Structure and Raman Fingerprint
000858679 260__ $$aWashington, DC$$bSoc.$$c2018
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000858679 520__ $$aWe investigate the electronic and vibrational properties of bottom-up synthesized aligned armchair graphene nanoribbons of N = 7 carbon atoms width periodically doped by substitutional boron atoms (B-7AGNRs). Using angle-resolved photoemission spectroscopy and density functional theory calculations, we find that the dopant-derived valence and conduction band states are notably hybridized with electronic states of Au substrate and spread in energy. The interaction with the substrate leaves the bands with pure carbon character rather unperturbed. This results in an identical effective mass of ≈0.2 m0 for the next-highest valence band compared with pristine 7AGNRs. We probe the phonons of B-7AGNRs by ultrahigh-vacuum (UHV) Raman spectroscopy and reveal the existence of characteristic splitting and red shifts in Raman modes due to the presence of substitutional boron atoms. Comparing the Raman spectra for three visible lasers (red, green, and blue), we find that interaction with gold suppresses the Raman signal from B-7AGNRs and the energy of the green laser (2.33 eV) is closer to the resonant E22 transition. The hybridized electronic structure of the B-7AGNR–Au interface is expected to improve electrical characteristics of contacts between graphene nanoribbon and Au. The Raman fingerprint allows the easy identification of B-7AGNRs, which is particularly useful for device fabrication.
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000858679 536__ $$0G:(DE-Juel1)jias1e_20180501$$aHybrid 2D-based interfaces from first principles (jias1e_20180501)$$cjias1e_20180501$$fHybrid 2D-based interfaces from first principles$$x1
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000858679 7001_ $$00000-0003-0390-0007$$aUsachov, Dmitry Yu.$$b1
000858679 7001_ $$00000-0002-9228-7082$$aFedorov, Alexander V.$$b2
000858679 7001_ $$0P:(DE-HGF)0$$aMarangoni, Tomas$$b3
000858679 7001_ $$0P:(DE-HGF)0$$aHaberer, Danny$$b4
000858679 7001_ $$0P:(DE-HGF)0$$aTresca, Cesare$$b5
000858679 7001_ $$00000-0002-0535-7573$$aProfeta, Gianni$$b6
000858679 7001_ $$0P:(DE-Juel1)130583$$aCaciuc, Vasile$$b7
000858679 7001_ $$0P:(DE-Juel1)131010$$aTsukamoto, Shigeru$$b8
000858679 7001_ $$0P:(DE-Juel1)130513$$aAtodiresei, Nicolae$$b9$$ufzj
000858679 7001_ $$00000-0002-8581-8359$$aEhlen, Niels$$b10
000858679 7001_ $$00000-0002-3930-8294$$aChen, Chaoyu$$b11
000858679 7001_ $$0P:(DE-HGF)0$$aAvila, José$$b12
000858679 7001_ $$00000-0001-8252-7655$$aAsensio, Maria C.$$b13
000858679 7001_ $$0P:(DE-HGF)0$$aVarykhalov, Andrei Yu.$$b14
000858679 7001_ $$00000-0003-2771-6386$$aNefedov, Alexei$$b15
000858679 7001_ $$00000-0003-1078-3304$$aWöll, Christof$$b16
000858679 7001_ $$00000-0003-4201-4462$$aKim, Timur K.$$b17
000858679 7001_ $$00000-0002-0114-2110$$aHoesch, Moritz$$b18
000858679 7001_ $$00000-0003-4723-3111$$aFischer, Felix R.$$b19
000858679 7001_ $$0P:(DE-HGF)0$$aGrüneis, Alexander$$b20$$eCorresponding author
000858679 773__ $$0PERI:(DE-600)2383064-5$$a10.1021/acsnano.8b04125$$gVol. 12, no. 8, p. 7571 - 7582$$n8$$p7571 - 7582$$tACS nano$$v12$$x1936-086X$$y2018
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000858679 8564_ $$uhttps://juser.fz-juelich.de/record/858679/files/boris17-boron9.pdf$$yPublished on 2018-07-13. Available in OpenAccess from 2019-07-13.
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