Fabricating nanometer-scale Co dot and line arrays on Cu(100) surfaces

Silva, S. L.; Jenkins, Carol; York, Scott; Leibsle, F.M.

doi:10.1063/1.125959

Cited by 44 publications

(22 citation statements)

References 25 publications

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“…This example once more proves the importance of kinetic control of the growth process, which is a common feature of the examples cited so far. Furthermore, the N/Cu(100) system has also been successfully employed as a template for the growth of Ag [175,176], Fe [177], and Co [176,[178][179][180].…”

Section: Inorganic Layers and Filmsmentioning

confidence: 98%

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Surfaces: Two-Dimensional Templates

Becker

Wandelt

2008

Topics in Current Chemistry

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Producing nanoscale structures on solid surfaces in a controlled way is a technologicalchallenge that has an important impact on a variety of fields such as microelectronics, magnetic storagetechnology, and heterogeneous catalysis. Currently most processes are based on a top-down approach,which relies on an active patterning of a surface by, for example, lithography or imprinting. As thedesired structures become smaller these top-down processes will reach the physical limit of their resolution.A bottom-up approach, which is based on a template-controlled growth of nanostructures on a prestructuredsubstrate, can provide access to structural dimensions of only a few nanometers. The challenge forthe growth of such nanostructures on surfaces is to identify and design suitable surfaces, which act astemplates due to their intrinsic physical and chemical properties. These 2-dimensional (2D) templates canthen be utilized to produce nanostructures of metals, semiconductors, or organic compounds.

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Section: Inorganic Layers and Filmsmentioning

confidence: 98%

“…N layer Ag 5 × 5 I s l a n d s L o w Cu(1 0 0) [177] Reconstr. N layer Fe 5 × 5 I s l a n d s L o w Cu(1 0 0) [178,180] …”

Section: Inorganic Layers and Filmsmentioning

confidence: 99%

Surfaces: Two-Dimensional Templates

Becker

Wandelt

2008

Topics in Current Chemistry

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“…In the case of Ni, 9 1 or 2 ML thick isolated Ni islands grow selectively at the crossings of the clean Cu lines. On the other hand, in the case of Co, all the Cu lines are covered with monolayer Co at first, 10,11 and then bilayer Co islands are squarely arranged at the crossings and are interconnected with monolayer Co strips.…”

Section: Introductionmentioning

confidence: 99%

“…The growth of magnetic [8][9][10][11] and nonmagnetic 12 metals has been studied on this surface previously. These metals grow selectively on the clean Cu part of the surface at the early stage of the deposition at room temperature ͑RT͒, although the details of the growth are dependent on both the metal species and the morphology of the surface.…”

Section: Introductionmentioning

confidence: 99%

Growth and magnetism ofConanometer-scale dots squarely arranged on aCu(001)−c(2×2)
Komori
¹
,
Lee
²
,
Nakatsuji
³

et al. 2001
Phys. Rev. B
39
0
10
0
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We have studied the growth and magnetism of two-dimensionally coupled nanometer-scale Co dots which are squarely arranged on a Cu(001)-c(2ϫ2)N surface. The morphology was analyzed by scanning tunneling microscopy, and the magnetization was studied using the magneto-optical Kerr effect. Well-ordered arrays of two monolayer ͑ML͒ thick Co dots interconnected by narrow 1 ML thick Co films can be grown by adjusting the deposited amount of Co. Here we used selective growth of Co at the clean Cu area of the surface, which consists of 5ϫ5 nm 2 N-adsorbed c(2ϫ2) patches separated by clean Cu lines of a few nm in width. The observed ferromagnetism in these arrays is considered to be mediated by narrow monolayer thick Co films on clean Cu lines. When the average thickness of Co exceeds 1.5 ML, 2 ML thick Co dots are connected with each other, and 1 ML Co films grow on the c(2ϫ2)N patches. For Co films with an average thickness between 1.8 ML and 2.1 ML, the magnetization is almost constant between 150 K and 370 K, and increases with decreasing temperature from 150 K. This result suggests that polarization is induced in the 1 ML Co film on c(2ϫ2)N patches below 150 K.

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“…Ni ͑Ref. 12͒ and Fe, [13][14][15] on the other hand, form dots at the intersections of the Cu grid. The density of dots is again 4ϫ10 12 cm Ϫ2 .…”

mentioning

confidence: 99%

Self-assembled magnetic nitride dots on Cu(100) surfaces

et al. 2004

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We describe here a procedure for the direct fabrication of a self-organized, ordered pattern of Fe 4 N magnetic dots on an otherwise clean Cu͑100͒ surface. It is based on the evaporation of Fe in a flux of atomic N produced by a plasma source onto a Cu͑100͒ surface kept at 700 K. The large-scale morphology of the surface is demonstrated by scanning tunneling microscope. The average lateral size of the islands is 10 nm and they penetrate three to four layers into the substrate. The iron nitride dots present a characteristic p4g(2ϫ2) surface reconstruction, detected also on 25 nm thick, nonstructured films grown in the same conditions, on which x-ray diffraction, conversion electron Mössbauer spectroscopy, Rutherford backscattering spectroscopy, and magneto-optic Kerr effect confirm the existence of a pure magnetic, cubic, ␥Ј-Fe 4 N(100) layer epitaxial with the Cu͑100͒ substrate.

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Fabricating nanometer-scale Co dot and line arrays on Cu(100) surfaces

Cited by 44 publications

References 25 publications

Surfaces: Two-Dimensional Templates

Surfaces: Two-Dimensional Templates

Growth and magnetism ofConanometer-scale dots squarely arranged on aCu(001)−c(2×2)
Komori
¹
,
Lee
²
,
Nakatsuji
³

et al. 2001
Phys. Rev. B
39
0
10
0
View full text Add to dashboard Cite

Self-assembled magnetic nitride dots on Cu(100) surfaces

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Fabricating nanometer-scale Co dot and line arrays on Cu(100) surfaces

Cited by 44 publications

References 25 publications

Surfaces: Two-Dimensional Templates

Surfaces: Two-Dimensional Templates

Growth and magnetism ofConanometer-scale dots squarely arranged on aCu(001)−c(2×2)Komori1, Lee2, Nakatsuji3 et al. 2001Phys. Rev. B390100View full textAdd to dashboardCite

Self-assembled magnetic nitride dots on Cu(100) surfaces

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Growth and magnetism ofConanometer-scale dots squarely arranged on aCu(001)−c(2×2)
Komori
¹
,
Lee
²
,
Nakatsuji
³

et al. 2001
Phys. Rev. B
39
0
10
0
View full text Add to dashboard Cite