W.V.M. Machado

470 total citations
42 papers, 400 citations indexed

About

W.V.M. Machado is a scholar working on Materials Chemistry, Atomic and Molecular Physics, and Optics and Electrical and Electronic Engineering. According to data from OpenAlex, W.V.M. Machado has authored 42 papers receiving a total of 400 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Materials Chemistry, 16 papers in Atomic and Molecular Physics, and Optics and 14 papers in Electrical and Electronic Engineering. Recurrent topics in W.V.M. Machado's work include Diamond and Carbon-based Materials Research (17 papers), High-pressure geophysics and materials (13 papers) and Semiconductor materials and devices (9 papers). W.V.M. Machado is often cited by papers focused on Diamond and Carbon-based Materials Research (17 papers), High-pressure geophysics and materials (13 papers) and Semiconductor materials and devices (9 papers). W.V.M. Machado collaborates with scholars based in Brazil, Mozambique and United Kingdom. W.V.M. Machado's co-authors include L. V. C. Assali, João F. Justo, J. C. Garcia, Luiz G. Ferreira, Fábio J. Ayres, L. G. Ferreira, P J Bishop, B. K. Ridley, Henrique E. Toma and Marcelo Franco and has published in prestigious journals such as The Journal of Chemical Physics, Physical review. B, Condensed matter and Applied Physics Letters.

In The Last Decade

W.V.M. Machado

42 papers receiving 385 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
W.V.M. Machado Brazil	12	287	147	109	92	70	42	400
А. С. Поплавной Russia	11	295 1.0×	181 1.2×	154 1.4×	33 0.4×	75 1.1×	87	424
Daniel Sneed United States	11	267 0.9×	120 0.8×	44 0.4×	108 1.2×	42 0.6×	28	347
A. Hannemann Germany	8	308 1.1×	45 0.3×	53 0.5×	88 1.0×	58 0.8×	12	382
Ch. Bellin France	9	368 1.3×	130 0.9×	98 0.9×	84 0.9×	82 1.2×	23	527
Kien Nguyen-Cong United States	10	327 1.1×	120 0.8×	57 0.5×	40 0.4×	81 1.2×	14	375
Ayano Chiba Japan	12	265 0.9×	84 0.6×	94 0.9×	47 0.5×	74 1.1×	64	392
Natalia Bedoya‐Martínez Austria	12	234 0.8×	143 1.0×	78 0.7×	43 0.5×	69 1.0×	22	380
A. P. Stepanov Russia	10	339 1.2×	178 1.2×	116 1.1×	20 0.2×	62 0.9×	50	495
L. F. Kulikova Russia	13	164 0.6×	79 0.5×	94 0.9×	53 0.6×	135 1.9×	33	376
Carolyn E. Jenkins United Kingdom	6	311 1.1×	186 1.3×	76 0.7×	32 0.3×	24 0.3×	9	411

Countries citing papers authored by W.V.M. Machado

Since Specialization

Citations

This map shows the geographic impact of W.V.M. Machado's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by W.V.M. Machado with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites W.V.M. Machado more than expected).

Fields of papers citing papers by W.V.M. Machado

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by W.V.M. Machado. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by W.V.M. Machado. The network helps show where W.V.M. Machado may publish in the future.

Co-authorship network of co-authors of W.V.M. Machado

This figure shows the co-authorship network connecting the top 25 collaborators of W.V.M. Machado. A scholar is included among the top collaborators of W.V.M. Machado based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with W.V.M. Machado. W.V.M. Machado is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Machado, W.V.M., João F. Justo, & L. V. C. Assali. (2015). Iron and manganese-related magnetic centers in hexagonal silicon carbide: A possible roadmap for spintronic devices. Journal of Applied Physics. 118(4). 2 indexed citations

Garcia, J. C., W.V.M. Machado, L. V. C. Assali, & João F. Justo. (2011). Transition metal atoms encapsulated in adamantane molecules. Diamond and Related Materials. 20(8). 1222–1224. 14 indexed citations

Justo, João F., et al.. (2009). Electronic properties and hyperfine fields of nickel-related complexes in diamond. Physical Review B. 79(11). 34 indexed citations

Assali, L. V. C., W.V.M. Machado, & João F. Justo. (2009). Trends on 3d transition metal impurities in diamond. Physica B Condensed Matter. 404(23-24). 4515–4517. 5 indexed citations

Justo, João F., et al.. (2006). Band gap states of interstitial nickel-complexes in diamond. Physica B Condensed Matter. 376-377. 292–295. 4 indexed citations

Assali, L. V. C., W.V.M. Machado, & João F. Justo. (2006). Manganese impurities in boron nitride. Applied Physics Letters. 89(7). 16 indexed citations

Assali, L. V. C., et al.. (2006). Cobalt in diamond: An ab initio investigation. Diamond and Related Materials. 16(4-7). 819–822. 5 indexed citations

Machado, W.V.M., et al.. (2006). Microscopic structure of nickel-dopant centers in diamond. Brazilian Journal of Physics. 36(2a). 267–269. 2 indexed citations

Assali, L. V. C., W.V.M. Machado, & João F. Justo. (2005). Manganese Impurity in Boron Nitride and Gallium Nitride. Materials science forum. 483-485. 1047–1050. 1 indexed citations

10.

Justo, João F., et al.. (2004). Electronic properties of isolated nickel in diamond. Brazilian Journal of Physics. 34(2b). 669–671. 1 indexed citations

11.

Machado, W.V.M., et al.. (2004). A theoretical model for the nickel-related defect centers in diamond. Diamond and Related Materials. 14(3-7). 380–382. 3 indexed citations

12.

Justo, João F., et al.. (2003). An ab initio investigation on nickel impurities in diamond. Physica B Condensed Matter. 340-342. 84–88. 9 indexed citations

13.

Ayres, Fábio J., W.V.M. Machado, João F. Justo, & L. V. C. Assali. (2003). Defects in mercuric iodide: an APW investigation. Physica B Condensed Matter. 340-342. 918–922. 12 indexed citations

14.

Machado, W.V.M., et al.. (2001). First-principles studies of Ti impurities in SiC. Physica B Condensed Matter. 308-310. 726–729. 16 indexed citations

15.

Machado, W.V.M., et al.. (1997). Experimental evidence of deep acceptor levels in GaAs exposed to near band gap light. Brazilian Journal of Physics. 116–120. 1 indexed citations

16.

Machado, W.V.M., et al.. (1991). Hole localization versus delocalization in symmetric molecular ions. Physical Review A. 43(7). 3348–3354. 3 indexed citations

17.

Machado, W.V.M., et al.. (1990). Cluster calculations of ZnO with Cu and Ni impurities. Physical review. B, Condensed matter. 41(15). 10735–10740. 4 indexed citations

18.

Ferreira, Leonardo L. G., et al.. (1988). Linearised variational cellular method. Journal of Physics B Atomic Molecular and Optical Physics. 21(24). 4063–4085. 3 indexed citations

19.

Machado, W.V.M., et al.. (1983). Variational cellular method for polyatomic molecules: SiH4. The Journal of Chemical Physics. 79(9). 4392–4396. 11 indexed citations

20.

Ridley, B. K., et al.. (1982). Photo-Hall effect and photoconductivity in p-type epitaxial GaAs:Cr. Journal of Physics C Solid State Physics. 15(33). 6865–6879. 10 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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