E. J. O’Sullivan

4.8k total citations · 2 hit papers
68 papers, 3.7k citations indexed

About

E. J. O’Sullivan is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, E. J. O’Sullivan has authored 68 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 39 papers in Electrical and Electronic Engineering, 31 papers in Atomic and Molecular Physics, and Optics and 17 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in E. J. O’Sullivan's work include Magnetic properties of thin films (29 papers), Advanced Memory and Neural Computing (14 papers) and Magnetic Properties and Applications (10 papers). E. J. O’Sullivan is often cited by papers focused on Magnetic properties of thin films (29 papers), Advanced Memory and Neural Computing (14 papers) and Magnetic Properties and Applications (10 papers). E. J. O’Sullivan collaborates with scholars based in United States, Ireland and Switzerland. E. J. O’Sullivan's co-authors include P. L. Trouilloud, S. Brown, David W. Abraham, L.D. Burke, J. Nowak, D. C. Worledge, J. Z. Sun, G. Hu, M. C. Gaidis and R. P. Robertazzi and has published in prestigious journals such as Physical Review Letters, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

E. J. O’Sullivan

67 papers receiving 3.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Exchange-biased magnetic tunnel junctions and application to nonvolatile magnetic random access memory (invited)

1999 915 citations E. J. O’Sullivan, S. Brown et al. Journal of Applied Physics profile →
Spin torque switching of perpendicular Ta∣CoFeB∣MgO-based magnetic tunnel junctions

2011 560 citations D. C. Worledge, G. Hu et al. Applied Physics Letters profile →

Peers

E. J. O’Sullivan

AMPO

EEE

EOMM

CMP

Avik W. Ghosh United States

J.-M. George France

Lucía Aballe Spain

E. Cambril France

Hiroyuki Akinaga Japan

Hisashi Shima Japan

A. Fainstein Argentina

Chanyong Hwang South Korea

Alessandro Pecchia Italy

Roger K. Lake United States

Avik W. Ghosh United States

E. J. O’Sullivan

2.2k ×1.0

AMPO

2.6k ×1.4

EEE

736 ×0.6

EOMM

2.4k ×2.6

199 ×0.3

CMP

Citations per year, relative to E. J. O’Sullivan E. J. O’Sullivan (= 1×) peers Avik W. Ghosh

Countries citing papers authored by E. J. O’Sullivan

Since Specialization

Citations

This map shows the geographic impact of E. J. O’Sullivan'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 E. J. O’Sullivan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E. J. O’Sullivan more than expected).

Fields of papers citing papers by E. J. O’Sullivan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by E. J. O’Sullivan. 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 E. J. O’Sullivan. The network helps show where E. J. O’Sullivan may publish in the future.

Co-authorship network of co-authors of E. J. O’Sullivan

This figure shows the co-authorship network connecting the top 25 collaborators of E. J. O’Sullivan. A scholar is included among the top collaborators of E. J. O’Sullivan 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 E. J. O’Sullivan. E. J. O’Sullivan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

O’Sullivan, E. J., Denis O′Shea, Michael Devereux, Kevin Kavanagh, & Orla Howe. (2025). Autophagy-dependent cell death and immune responses induced by heteroleptic copper(II), manganese(II), and silver(I) complexes containing dicarboxylate and 1,10-phenanthroline ligands: novel insights from in vitro and in vivo models. BioMetals. 39(1). 337–358.

O’Sullivan, E. J., Denis O′Shea, Michael Devereux, & Orla Howe. (2025). Apoptotic cell death induced by copper (II), manganese (II) and silver (I) complexes containing bridging dicarboxylate and 1,10-phenanthroline ligands: one of the multi-modes of anticancer activity?. BioMetals. 38(3). 785–805. 1 indexed citations

O’Sullivan, E. J.. (2024). Bayesian Optimization Strategies for Electrochemical Technology Development. ECS Meeting Abstracts. MA2024-02(22). 1921–1921. 1 indexed citations

Nowak, J., J. Z. Sun, G. Hu, et al.. (2016). Dependence of Voltage and Size on Write Error Rates in Spin-Transfer Torque Magnetic Random-Access Memory. IEEE Magnetics Letters. 7. 1–4. 109 indexed citations

Hu, G., J. Nowak, J. Z. Sun, et al.. (2015). STT-MRAM with double magnetic tunnel junctions. 26.3.1–26.3.4. 64 indexed citations

Wang, Naigang, D. Goren, E. J. O’Sullivan, et al.. (2014). Ultra-high-Q air-core slab inductors for on-chip power conversion. 12.3.1–12.3.4. 4 indexed citations

Wang, Naigang, E. J. O’Sullivan, Bucknell C. Webb, et al.. (2013). Limits to On-Chip Power Conversion With Thin Film Inductors. IEEE Transactions on Magnetics. 49(7). 4137–4143. 9 indexed citations

Gajek, M., J. Nowak, J. Z. Sun, et al.. (2012). Spin torque switching of 20 nm magnetic tunnel junctions with perpendicular anisotropy. Applied Physics Letters. 100(13). 226 indexed citations

Worledge, D. C., M. Gajek, David W. Abraham, et al.. (2012). Recent Advances in Spin Torque MRAM. 5359. 1–3. 3 indexed citations

10.

Sturcken, Noah, E. J. O’Sullivan, Naigang Wang, et al.. (2012). A 2.5D Integrated Voltage Regulator Using Coupled-Magnetic-Core Inductors on Silicon Interposer. IEEE Journal of Solid-State Circuits. 48(1). 244–254. 141 indexed citations

11.

Nowak, J., R. P. Robertazzi, J. Z. Sun, et al.. (2011). Demonstration of ultralow bit error rates for spin-torque magnetic random-access memory with perpendicular magnetic anisotropy. IEEE Magnetics Letters. 2. 3000204–3000204. 66 indexed citations

12.

Worledge, D. C., G. Hu, David W. Abraham, et al.. (2011). Spin torque switching of perpendicular Ta∣CoFeB∣MgO-based magnetic tunnel junctions. Applied Physics Letters. 98(2). 560 indexed citations breakdown →

13.

Sun, J. Z., R. P. Robertazzi, J. Nowak, et al.. (2011). Effect of subvolume excitation and spin-torque efficiency on magnetic switching. Physical Review B. 84(6). 128 indexed citations

14.

Sun, J. Z., M. C. Gaidis, E. J. O’Sullivan, et al.. (2009). A three-terminal spin-torque-driven magnetic switch. Applied Physics Letters. 95(8). 58 indexed citations

15.

Gaidis, M. C., E. J. O’Sullivan, J. Nowak, et al.. (2006). Two-level BEOL processing for rapid iteration in MRAM development. IBM Journal of Research and Development. 50(1). 41–54. 26 indexed citations

16.

Worledge, D. C., P. L. Trouilloud, M. C. Gaidis, et al.. (2006). Materials and devices for reduced switching field toggle magnetic random access memory. Journal of Applied Physics. 100(7). 13 indexed citations

17.

Delamarche, Emmanuel, Matthias Geißler, W. S. Graham, et al.. (2003). Electroless Deposition of NiB on 15 Inch Glass Substrates for the Fabrication of Transistor Gates for Liquid Crystal Displays. Langmuir. 19(14). 5923–5935. 35 indexed citations

18.

O’Sullivan, E. J., Jean Horkans, James R. White, & J.M. Roldan. (1988). Characterization of PdSn catalysts for electroless metal deposition. IBM Journal of Research and Development. 32(5). 591–602. 18 indexed citations

19.

Burke, L.D. & E. J. O’Sullivan. (1981). Oxygen gas evolution on hydrous oxides — An example of three-dimensional electrocatalysis?. Journal of Electroanalytical Chemistry. 117(1). 155–160. 105 indexed citations

20.

Burke, L.D. & E. J. O’Sullivan. (1979). Enhanced oxygen evolution at an activated rhodium anode in base. Journal of Electroanalytical Chemistry. 97(1). 123–125. 21 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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