Danielle T. Walker

3.6k citations

62 papers · 2.7k · 1 hit paper · h-index 23

Impact in

Condensed Matter Physics top 0.5%
- GaN-based semiconductor devices and materials
Electronic, Optical and Magnetic Materials top 2%
- Ga2O3 and related materials

Papers in

Condensed Matter Physics 42
- GaN-based semiconductor devices and materials 42
Electronic, Optical and Magnetic Materials 24
- Ga2O3 and related materials 24

Co-authors: Patrick Kung (35 shared papers)Manijeh Razeghi (27 shared papers)A. Saxler (25 shared papers)Melissa Hamilton (7 shared papers)Jorge Evaristo Conde Diaz (5 shared papers)X. A. Cao (6 shared papers)Edward Brittain Stokes (6 shared papers)Manijeh Razeghi (4 shared papers)
Journals: Applied Physics Letters (14 papers)Trauma Violence & Abuse (3 papers)Solid-State Electronics (2 papers)Nature (2 papers)Journal of the Society for Social Work and Research (1 paper)
Partner nations: United States United Kingdom Canada

In The Last Decade

Danielle T. Walker

56 papers receiving 2.7k citations

Danielle T. Walker's Hit Papers

align trajectories log scale

Mapping the human genetic architecture of COVID-19 2021 · 641 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

2021 Nature

Peers

Countries citing papers authored by Danielle T. Walker

Since Specialization

Citations

This map shows the geographic impact of Danielle T. Walker'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 Danielle T. Walker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Danielle T. Walker more than expected).

Fields of papers citing papers by Danielle T. Walker

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Danielle T. Walker. 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 Danielle T. Walker. The network helps show where Danielle T. Walker may publish in the future.

Co-authors

The 25 scholars most cited alongside Danielle T. Walker, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Danielle T. Walker Line = papers co-authored together Danielle T. Walker links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 62 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Mapping the human genetic architecture of COVID-19 Nature ·Mari Niemi, Juha S. Karjalainen, Rachel G. Liao, Benjamin M. Neale, Mark Daly, Andrea Ganna, Gita A. Pathak, Shea J. Andrews Hit paper breakdown →	2021	641
2	Diffusion and tunneling currents in GaN/InGaN multiple quantum well light-emitting diodes IEEE Electron Device Letters ·X. A. Cao, Edward Brittain Stokes, Peter M. Sandvik, Stephen F. LeBoeuf, J. W. Kretchmer, Danielle T. Walker	2002	214
3	High-speed, low-noise metal–semiconductor–metal ultraviolet photodetectors based on GaN Applied Physics Letters ·Danielle T. Walker, Eva Monroy, Patrick Kung, Jun Ji Wu, Melissa Hamilton, Fernando Jose Sanchez, Jorge Evaristo Conde Diaz, Manijeh Razeghi	1999	171
4	Solar-blind AlGaN photodiodes with very low cutoff wavelength Applied Physics Letters ·Danielle T. Walker, Vipan Kumar, Keqin Mi, Peter Sandvik, Patrick Kung, X. H. Zhang, Manijeh Razeghi	2000	157
5	AlGaN ultraviolet photoconductors grown on sapphire Applied Physics Letters ·Danielle T. Walker, X. Zhang, Patrick Kung, A. Saxler, Sirus Javadpour, Jiao Xu, M. Razeghi	1996	157
6	High quality AIN and GaN epilayers grown on (00⋅1) sapphire, (100), and (111) silicon substrates Applied Physics Letters ·Patrick Kung, A. Saxler, X. Zhang, Danielle T. Walker, T. C. Wang, Ian T. Ferguson, Manijeh Razeghi	1995	151
7	High-quality visible-blind AlGaN p-i-n photodiodes Applied Physics Letters ·Eva Monroy, Melissa Hamilton, Danielle T. Walker, Patrick Kung, Fernando Jose Sanchez, Manijeh Razeghi	1999	129
8	Al x Ga 1−x N (0⩽x⩽1) ultraviolet photodetectors grown on sapphire by metal-organic chemical-vapor deposition Applied Physics Letters ·Danielle T. Walker, X. Zhang, A. Saxler, Patrick Kung, Jian Xu, Manijeh Razeghi	1997	108
9	Visible blind GaN p-i-n photodiodes Applied Physics Letters ·Danielle T. Walker, A. Saxler, Patrick Kung, X. Zhang, Melissa Hamilton, Jorge Evaristo Conde Diaz, Manijeh Razeghi	1998	101
10	Growth of AlxGa1−xN:Ge on sapphire and silicon substrates Applied Physics Letters ·X. Zhang, Patrick Kung, A. Saxler, Danielle T. Walker, T. C. Wang, Manijeh Razeghi	1995	80
11	Lateral epitaxial overgrowth of GaN films on sapphire and silicon substrates Applied Physics Letters ·Patrick Kung, Danielle T. Walker, Melissa Hamilton, Jorge Evaristo Conde Diaz, Manijeh Razeghi	1999	79
12	Kinetics of photoconductivity in n-type GaN photodetector Applied Physics Letters ·Patrick Kung, Xiuwen Zhang, Danielle T. Walker, A. Saxler, J. Piotrowski, Antoni Rogalski, M. Razeghi	1995	70
13	Photovoltaic effects in GaN structures with p-n junctions Applied Physics Letters ·X. Zhang, Patrick Kung, Danielle T. Walker, J. Piotrowski, Antoni Rogalski, A. Saxler, Manijeh Razeghi	1995	69
14	Pulse autocorrelation measurements based on two- and three-photon conductivity in a GaN photodiode Applied Physics Letters ·Alexander M. Streltsov, Kevin D. Moll, Alexander L. Gaeta, Patrick Kung, Danielle T. Walker, Manijeh Razeghi	1999	63
15	Metalorganic chemical vapor deposition of monocrystalline GaN thin films on β-LiGaO2 substrates Applied Physics Letters ·Patrick Kung, A. Saxler, X. Zhang, Danielle T. Walker, R. Lavado, Manijeh Razeghi	1996	59
16	A second update on mapping the human genetic architecture of COVID-19 Nature ·Shea J. Andrews, Mattia Cordioli, Christine R. Stevens, Mark Daly, Andrea Ganna, Gita A. Pathak, Akiko Iwasaki, Juha M Karjalainen	2023	56
17	GaInN/GaN Multi-Quantum Well Laser Diodes Grown by Low-Pressure Metalorganic Chemical Vapor Deposition MRS Internet Journal of Nitride Semiconductor Research ·Patrick Kung, A. Saxler, Danielle T. Walker, Adam Rybaltowski, Xiaolong Zhang, Jorge Evaristo Conde Diaz, Manijeh Razeghi	1998	45
18	Comparison of trimethylgallium and triethylgallium for the growth of GaN Applied Physics Letters ·A. Saxler, Danielle T. Walker, Patrick Kung, X. Zhang, Manijeh Razeghi, J. S. Solomon, William C. Mitchel, Honnavalli R. Vydyanath	1997	43
19	Optimization of current spreading metal layer for GaN/InGaN-based light emitting diodes Solid-State Electronics ·X. A. Cao, Edward Brittain Stokes, Peter Sandvik, Nikhil R. Taskar, J. W. Kretchmer, Danielle T. Walker	2002	36
20	Investigation of radiative tunneling in GaN/InGaN single quantum well light-emitting diodes Solid-State Electronics ·X. A. Cao, Stephen F. LeBoeuf, K.H Kim, Peter M. Sandvik, Edward Brittain Stokes, Abasifreke Ebong, Danielle T. Walker, J. W. Kretchmer	2002	32

About Danielle T. Walker

Danielle T. Walker is a scholar working on Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Biomedical Engineering and Electrical and Electronic Engineering, having authored 62 papers that have together received 2.7k indexed citations. Recurring topics across this work include GaN-based semiconductor devices and materials (42 papers), Ga2O3 and related materials (24 papers), Semiconductor materials and devices (12 papers), Photocathodes and Microchannel Plates (10 papers), Semiconductor Quantum Structures and Devices (10 papers), ZnO doping and properties (8 papers), Metal and Thin Film Mechanics (6 papers) and SARS-CoV-2 and COVID-19 Research (3 papers). The work is most often cited by research in Condensed Matter Physics (1.6k citations), Electronic, Optical and Magnetic Materials (1.1k citations), Infectious Diseases (335 citations), Atomic and Molecular Physics, and Optics (590 citations) and Biomedical Engineering (642 citations). Danielle T. Walker has collaborated with scholars based in United States, United Kingdom and Canada. Frequent co-authors include Patrick Kung, Manijeh Razeghi, A. Saxler, Melissa Hamilton, Jorge Evaristo Conde Diaz, X. A. Cao, Edward Brittain Stokes, Manijeh Razeghi, J. W. Kretchmer and Peter M. Sandvik. Their work appears in journals such as Applied Physics Letters, Trauma Violence & Abuse, Solid-State Electronics, Nature and Journal of the Society for Social Work and Research.

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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Danielle T. Walker's Hit Papers

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