L.L. Wittmer

3.0k total citations · 1 hit paper
7 papers, 2.4k citations indexed

About

L.L. Wittmer is a scholar working on Electrical and Electronic Engineering, Condensed Matter Physics and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, L.L. Wittmer has authored 7 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Electrical and Electronic Engineering, 3 papers in Condensed Matter Physics and 3 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in L.L. Wittmer's work include GaN-based semiconductor devices and materials (3 papers), Ga2O3 and related materials (3 papers) and Advanced Semiconductor Detectors and Materials (3 papers). L.L. Wittmer is often cited by papers focused on GaN-based semiconductor devices and materials (3 papers), Ga2O3 and related materials (3 papers) and Advanced Semiconductor Detectors and Materials (3 papers). L.L. Wittmer collaborates with scholars based in United States and Germany. L.L. Wittmer's co-authors include M. Stutzmann, R. Dimitrov, O. Ambacher, W. Rieger, J. Hilsenbeck, Nils Weimann, J. R. Shealy, W. J. Schaff, J. Smart and K. Chu and has published in prestigious journals such as Journal of Applied Physics, IEEE Transactions on Electron Devices and Japanese Journal of Applied Physics.

In The Last Decade

L.L. Wittmer

7 papers receiving 2.3k 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.

Two-dimensional electron gases induced by spontaneous and piezoelectric polarization charges in N- and Ga-face AlGaN/GaN heterostructures

1999 2.3k citations O. Ambacher, J. Smart et al. Journal of Applied Physics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
L.L. Wittmer United States	5	2.2k	1.2k	1.1k	832	753	7	2.4k
Q. Chen United States	23	2.4k 1.1×	1.1k 1.0×	1.5k 1.3×	677 0.8×	865 1.1×	37	2.6k
J. Hilsenbeck Germany	14	2.3k 1.1×	1.2k 1.0×	1.4k 1.3×	832 1.0×	836 1.1×	29	2.7k
A. Link Germany	14	1.5k 0.7×	831 0.7×	483 0.4×	441 0.5×	491 0.7×	29	1.6k
K. Chu United States	14	4.5k 2.0×	2.2k 1.9×	2.5k 2.2×	1.5k 1.8×	1.5k 2.0×	30	4.8k
D. D. Koleske United States	25	2.7k 1.2×	1.4k 1.2×	1.6k 1.4×	952 1.1×	721 1.0×	64	2.9k
B. Luo United States	27	1.6k 0.7×	1.1k 0.9×	1.6k 1.5×	810 1.0×	281 0.4×	93	2.2k
W. Kruppa United States	19	995 0.4×	429 0.4×	1.6k 1.4×	370 0.4×	930 1.2×	67	2.0k
A. T. Ping United States	21	1.3k 0.6×	431 0.4×	1.0k 0.9×	260 0.3×	516 0.7×	38	1.5k
M. Gonschorek Switzerland	20	1.5k 0.7×	736 0.6×	942 0.8×	305 0.4×	444 0.6×	36	1.6k
Tomás Palacios United States	17	1.3k 0.6×	654 0.6×	1.1k 1.0×	486 0.6×	342 0.5×	31	1.6k

Countries citing papers authored by L.L. Wittmer

Since Specialization

Citations

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

Fields of papers citing papers by L.L. Wittmer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by L.L. Wittmer. 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 L.L. Wittmer. The network helps show where L.L. Wittmer may publish in the future.

Co-authorship network of co-authors of L.L. Wittmer

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

All Works

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7 of 7 papers shown

1.

Ambacher, O., J. Smart, J. R. Shealy, et al.. (1999). Two-dimensional electron gases induced by spontaneous and piezoelectric polarization charges in N- and Ga-face AlGaN/GaN heterostructures. Journal of Applied Physics. 85(6). 3222–3233. 2340 indexed citations breakdown →

2.

Dimitrov, R., Arnan Mitchell, L.L. Wittmer, et al.. (1999). Comparison of N-face and Ga-face AlGaN/GaN-Based High Electron Mobility Transistors Grown by Plasma-Induced Molecular Beam Epitaxy. Japanese Journal of Applied Physics. 38(9R). 4962–4962. 26 indexed citations

3.

Dimitrov, R., et al.. (1998). Carrier Confinement in AlGaN/GaN Heterostructures Grown by Plasma Induced Molecular Beam Epitaxy. physica status solidi (a). 168(2). R7–R8. 32 indexed citations

4.

Forbes, L., et al.. (1976). Characteristics of the indium-doped infrared sensing MOSFET(IRFET). IEEE Transactions on Electron Devices. 23(12). 1272–1278. 6 indexed citations

5.

Forbes, L. & L.L. Wittmer. (1975). Experimental verification of operation of the indium-doped infrared-sensing MOSFET. IEEE Transactions on Electron Devices. 22(12). 1100–1101. 5 indexed citations

6.

Wittmer, L.L., et al.. (1975). The infrared sensing MOSFET. 510–513. 1 indexed citations

7.

Parker, William C., L.L. Wittmer, J.R. Yeargan, & L. Forbes. (1974). Experimental characterization of the infrared response of gold doped silicon MOSFETs (IRFETs). 21. 2–3. 3 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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