E. E. Häller

16.1k citations

324 papers · 13.0k · 3 hit papers · h-index 57

Impact in

Condensed Matter Physics top 0.1%
- GaN-based semiconductor devices and materials
Atomic and Molecular Physics, and Optics top 0.2%
- Semiconductor Quantum Structures and Devices
- Semiconductor materials and interfaces

Papers in

Atomic and Molecular Physics, and Optics 212
- Semiconductor Quantum Structures and Devices 117
- Semiconductor materials and interfaces 77
Electrical and Electronic Engineering 177
- Semiconductor materials and devices 59
- Silicon and Solar Cell Technologies 47
- Advanced Semiconductor Detectors and Materials 33

Co-authors: W. Walukiewicz (71 shared papers)Joel W. Ager (93 shared papers)K. M. Yu (70 shared papers)Junqiao Wu (33 shared papers)W. J. Schaff (19 shared papers)H. Bracht (19 shared papers)H. J. Lü (16 shared papers)Hai Lu (4 shared papers)
Journals: Applied Physics Letters (55 papers)Physical review. B, Condensed matter (47 papers)Physical Review Letters (21 papers)Physical Review B (20 papers)Journal of Applied Physics (18 papers)
Partner nations: United States Germany Japan

In The Last Decade

E. E. Häller

318 papers receiving 12.6k citations

E. E. Häller's Hit Papers

align trajectories log scale

Unusual properties of the fundamental band gap of InN 2002 · 1.2k citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2002 Applied Physics Letters
2002 Applied Physics Letters
1994 Physical review. B, Condensed matter

Peers

Countries citing papers authored by E. E. Häller

Since Specialization

Citations

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

Fields of papers citing papers by E. E. Häller

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside E. E. Häller, 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 E. E. Häller Line = papers co-authored together E. E. Häller 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 324 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Unusual properties of the fundamental band gap of InN Applied Physics Letters ·Junqiao Wu, W. Walukiewicz, K. M. Yu, Joel W. Ager, E. E. Häller, Hai Lu, W. J. Schaff, Yoshiki Saito, Yasushi Nanishi Hit paper breakdown →	2002	1247
2	Small band gap bowing in In1−xGaxN alloys Applied Physics Letters ·Junqiao Wu, W. Walukiewicz, K. M. Yu, Joel W. Ager, E. E. Häller, H. J. Lü, W. J. Schaff Hit paper breakdown →	2002	531
3	Observation of crystallineC3N4 Physical review. B, Condensed matter ·K. M. Yu, Marvin L. Cohen, E. E. Häller, W. L. Hansen, Amy Liu, I. C. Wu Hit paper breakdown →	1994	455
4	Effects of the narrow band gap on the properties of InN Physical review. B, Condensed matter ·Junqiao Wu, W. Walukiewicz, (unknown), K. M. Yu, Joel W. Ager, E. E. Häller, H. J. Lü, W. J. Schaff	2002	346
5	Temperature dependence of the fundamental band gap of InN Journal of Applied Physics ·Junqiao Wu, W. Walukiewicz, (unknown), K. M. Yu, Joel W. Ager, S. X. Li, E. E. Häller, H. J. Lü, W. J. Schaff	2003	338
6	Thermal conductivity of germanium crystals with different isotopic compositions Physical review. B, Condensed matter ·M. Asen-Palmer, Krzysztof Bartkowski, E. Gmelin, M. Cardona, A. P. Zhernov, A. V. Inyushkin, Alexander N. Taldenkov, V. I. Ozhogin, Kohei M. Itoh, E. E. Häller	1997	332
7	Silicon Self-Diffusion in Isotope Heterostructures Physical Review Letters ·H. Bracht, E. E. Häller, R. Clark-Phelps	1998	263
8	Optical properties of single-crystalline ZnO nanowires on m-sapphire Applied Physics Letters ·Hou T. Ng, Bin Chen, Jun Li, Jie Han, M. Meyyappan, Junqiao Wu, S. X. Li, E. E. Häller	2003	259
9	Microstructure of Ti/Al and Ti/Al/Ni/Au Ohmic contacts for n-GaN Applied Physics Letters ·S. Ruvimov, Z. Liliental-Weber, J. Washburn, K. J. Duxstad, E. E. Häller, Z. Fan, S. Noor Mohammad, W. Kim, A. Botchkarev, H. Morkoç	1996	253
10	Band Gap of Hexagonal InN and InGaN Alloys physica status solidi (b) ·V. Yu. Davydov, A. A. Klochikhin, V. V. Emtsev, D. A. Kurdyukov, S. V. Ivanov, V. A. Vekshin, F. Bechstedt, J. Furthm�ller, J. Aderhold, J. Graul, А. В. Мудрый, Hisatomo Harima, Akihiro Hashimoto, Akio Yamamoto, E. E. Häller	2002	251
11	Band Gap of InN and In-Rich InxGa1?xN alloys (0.36 < x < 1) physica status solidi (b) ·V. Yu. Davydov, A. A. Klochikhin, V. V. Emtsev, S. V. Ivanov, V. V. Vekshin, F. Bechstedt, J. Furthm�ller, Hisatomo Harima, А. В. Мудрый, Akihiro Hashimoto, Akio Yamamoto, J. Aderhold, J. Graul, E. E. Häller	2002	235
12	On p-type doping in GaN—acceptor binding energies Applied Physics Letters ·Stefan Fischer, Christian Wetzel, E. E. Häller, B. K. Meyer	1995	220
13	Large, nitrogen-induced increase of the electron effective mass in InyGa1−yNxAs1−x Applied Physics Letters ·C. Skierbiszewski, P. Perlin, P. Wiśniewski, W. Knap, T. Suski, W. Walukiewicz, (unknown), K. M. Yu, Joel W. Ager, E. E. Häller, John F. Geisz, J. M. Olson	2000	204
14	Nature of the fundamental band gap in GaNxP1−x alloys Applied Physics Letters ·(unknown), W. Walukiewicz, K. M. Yu, Junqiao Wu, Joel W. Ager, E. E. Häller, H. P. Xin, C. W. Tu	2000	202
15	Effects of electron concentration on the optical absorption edge of InN Applied Physics Letters ·Junqiao Wu, W. Walukiewicz, S. X. Li, R. Armitage, Johnny C. Ho, E. R. Weber, E. E. Häller, Hai Lu, W. J. Schaff, A. Barcz, R. Jakieła	2004	201
16	Raman Spectroscopy and Time-Resolved Photoluminescence of BN and B_xC_yN_z Nanotubes Nano Letters ·Junqiao Wu, Wei-Qiang Han, W. Walukiewicz, Joel W. Ager, (unknown), E. E. Häller, Alex Zettl	2004	181
17	Fermi-level stabilization energy in group III nitrides Physical Review B ·S. X. Li, K. M. Yu, Junqiao Wu, Reese E. Jones, W. Walukiewicz, Joel W. Ager, (unknown), E. E. Häller, H. J. Lü, W. J. Schaff	2005	175
18	Local vibrational modes of the Mg–H acceptor complex in GaN Applied Physics Letters ·Werner Götz, N. M. Johnson, D. P. Bour, Matthew D. McCluskey, E. E. Häller	1996	146
19	Optical properties and electronic structure of InN and In-rich group III-nitride alloys Journal of Crystal Growth ·W. Walukiewicz, S.X Li, Junqiao Wu, K. M. Yu, Joel W. Ager, E. E. Häller, Hai Lu, W. J. Schaff	2004	144
20	Nonlinear Oscillations and Chaos in Electrical Breakdown in Ge Physical Review Letters ·Stephen W. Teitsworth, R. M. Westervelt, E. E. Häller	1983	133

About E. E. Häller

E. E. Häller is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Materials Chemistry, Condensed Matter Physics and Electronic, Optical and Magnetic Materials, having authored 324 papers that have together received 13.0k indexed citations. Recurring topics across this work include Semiconductor Quantum Structures and Devices (117 papers), Semiconductor materials and interfaces (77 papers), GaN-based semiconductor devices and materials (65 papers), Semiconductor materials and devices (59 papers), Silicon and Solar Cell Technologies (47 papers), Silicon Nanostructures and Photoluminescence (40 papers), Advanced Semiconductor Detectors and Materials (33 papers) and Ga2O3 and related materials (26 papers). The work is most often cited by research in Condensed Matter Physics (5.8k citations), Atomic and Molecular Physics, and Optics (6.0k citations), Electronic, Optical and Magnetic Materials (2.9k citations), Materials Chemistry (5.6k citations) and Electrical and Electronic Engineering (6.0k citations). E. E. Häller has collaborated with scholars based in United States, Germany and Japan. Frequent co-authors include W. Walukiewicz, Joel W. Ager, K. M. Yu, Junqiao Wu, W. J. Schaff, H. Bracht, H. J. Lü, Hai Lu, W. L. Hansen and Yasushi Nanishi. Their work appears in journals such as Applied Physics Letters, Physical review. B, Condensed matter, Physical Review Letters, Physical Review B and Journal of Applied Physics.

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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E. E. Häller

E. E. Häller's Hit Papers

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