Structural properties of Cu clusters on Si(111):Cu2Si magic family

Саранин, А. А.; Зотов, А. В.; Utas, O.A.; Kotlyar, V.G.; Wei, C. M.; Wang, Yuh‐Lin

doi:10.1016/j.susc.2009.07.035

Cited by 14 publications

(16 citation statements)

References 31 publications

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“…We note that the macroscopic ENDOR data 35 of similar molecules shows a hyperfine of 48MHz as well as nuclear Zeeman splitting. The latter are below our resolution in our weaker magnetic field; 29 Si with its much larger gyromagnetic ratio allows our observation of Nuclear Zeeman, Fig. 2b,c.…”

Section: Resultsmentioning

confidence: 58%

“…4b) shows a typical structure of such a surface [27][28][29] . In this STM system, the magnetic field is oriented parallel (perpendicular) to the tip (sample).…”

Section: Resultsmentioning

confidence: 99%

“…17. We focus on a line at 590MHz (red arrow) that is an ESR transition shifted by a hyperfine coupling to a 29 Si nucleus. (The presence of 28 Si with no nuclear spin leads to additional structure, not of interest here 17 ).…”

Section: Experimental Methodsmentioning

confidence: 99%

“…for an electron's g factor of 2 γ e = 2.8MHz/G and for 29 Si nucleus γ n = −8.4MHz/T), H 0 is a DC magnetic field in the z direction andâ is the hyperfine tensor. The electron and nuclear Zeeman energies are defined as hν e = γ e H 0 , hν n = γ n H 0 , respectively.…”

Section: Introductionmentioning

confidence: 99%

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Fingerprints of single nuclear spin energy levels using STM – ENDOR

Manassen

Averbukh

Jbara

et al. 2018

Journal of Magnetic Resonance

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We performed STM-ENDOR experiments where the intensity of one of the hyperfine components detected in ESR-STM is recorded while an rf power is irradiated into the tunneling junction and its frequency is swept. When the latter frequency is near a nuclear transition a dip in ESR-STM signal is observed. This experiment was performed in three different systems: near surface SiC vacancies where the electron spin is coupled to a next nearest neighbor 29 Si nucleus; Cu deposited on Si(111)7x7 surface, where the unpaired electron of the Cu atom is coupled to the Cu nucleus ( 63 Cu, 65 Cu) and on Tempo molecules adsorbed on Au(111), where the unpaired electron is coupled to a Nitrogen nucleus ( 14 N). While some of the hyperfine values are unresolved in the ESR-STM data due to linewidth we find that they are accurately determined in the STM-ENDOR data including those from remote nuclei, which are not detected in the ESR-STM spectrum. Furthermore, STM-ENDOR can measure single nuclear Zeeman frequencies, distinguish between isotopes through their different nuclear magnetic moments and detect quadrupole spectra. We also develop and solve a Bloch type equation for the coupled electron-nuclear system that facilitates interpretation of the data. The improved spectral resolution of STM -ENDOR opens many possibilities for nanometric scale chemical analysis.

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Section: Resultsmentioning

confidence: 58%

“…4b) shows a typical structure of such a surface [27][28][29] . In this STM system, the magnetic field is oriented parallel (perpendicular) to the tip (sample).…”

Section: Resultsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fingerprints of single nuclear spin energy levels using STM – ENDOR

Manassen

Averbukh

Jbara

et al. 2018

Journal of Magnetic Resonance

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“…Promising approach to reach this goal is associated with using self-assembly of the identical-size clusters (surface magic clusters [1]) forming highly ordered twodimensional lattice on a suitable surface. The most advanced results have been sofar obtained with the surface magic clusters of group-III metals (Al, Ga, and In) [2][3][4][5][6] and some other metals (e.g., Na, Pb, and Cu) [7][8][9][10] on crystalline Si surfaces (mainly, on Si(1 1 1)7 Â 7 surface). For these cluster arrays, a number of the profound results have recently been obtained, including elucidation of their specific electronic properties [8,[11][12][13][14][15] foundation of their pronounced catalytic activity [16], finding the possibilities to modify composition, structure and properties of the clusters [17][18][19], demonstrating the prospects of the cluster as a prototype of the atomic-scale device [20].…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of Al magic cluster self-assembly on Si(1 0 0) surface

et al. 2010

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Cu_nSi₁₂ (n = 30, 38, and 60): A series of silicide cages with high content of TM atoms

Guo

Zhao

Wang

et al. 2022

Int J of Quantum Chemistry

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A series of silicide cages with high content of transition metal atoms, CunSi12 (n = 30, 38, and 60) clusters, have been systematically investigated in the framework of density functional theory. Among them, Cu30Si12 with a higher Eb and a lager HOMO‐LUMO gap has been discussed in detail. The hollow cage‐like structure Cu30Si12, which adopts an Ih‐symmetry, can be described as the combination of 12 Cu5Si. Molecular dynamics simulations and vibrational frequency analysis have been conducted to verify its stability. Electron density analysis, natural bond orbitals analysis, and partial density of states analysis have been done to explore the binding characters of Cu30Si12. The results indicate that the σ bonds between Cu and Si atoms are of great importance for structural stability. More importantly, on one hand, CunSi12 (n = 30, 38, and 60) can encapsulate atoms or molecules to regulate their properties. On the other hand, CunSi12 (n = 30, 38, and 60) may be rather tempting for the further semiconductor devices due to the existence of silicon.

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Structural properties of Cu clusters on Si(111):Cu2Si magic family

Cited by 14 publications

References 31 publications

Fingerprints of single nuclear spin energy levels using STM – ENDOR

Fingerprints of single nuclear spin energy levels using STM – ENDOR

Peculiarities of Al magic cluster self-assembly on Si(1 0 0) surface

Cu_nSi₁₂ (n = 30, 38, and 60): A series of silicide cages with high content of TM atoms

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Structural properties of Cu clusters on Si(111):Cu2Si magic family

Cited by 14 publications

References 31 publications

Fingerprints of single nuclear spin energy levels using STM – ENDOR

Fingerprints of single nuclear spin energy levels using STM – ENDOR

Peculiarities of Al magic cluster self-assembly on Si(1 0 0) surface

CunSi12 (n = 30, 38, and 60): A series of silicide cages with high content of TM atoms

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Product

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Cu_nSi₁₂ (n = 30, 38, and 60): A series of silicide cages with high content of TM atoms