H. Ch. Alt

1.5k citations

67 papers · 1.2k indexed · h-index 16

Impact in

Condensed Matter Physics top 5%
- GaN-based semiconductor devices and materials
Atomic and Molecular Physics, and Optics top 5%
- Semiconductor Quantum Structures and Devices
- Semiconductor materials and interfaces

Papers in

Condensed Matter Physics 15
- GaN-based semiconductor devices and materials 14
Atomic and Molecular Physics, and Optics 38
- Semiconductor Quantum Structures and Devices 18
- Semiconductor materials and interfaces 16

Co-authors: B. K. Meyer D.M. Hofmann E. Weigel T. Muschik M. Salk K. W. Benz G. Müller‐Vogt Wolfgang Stadler
Journals: Applied Physics Letters (12 papers)Physica B Condensed Matter (7 papers)Semiconductor Science and Technology (6 papers)Physical Review B (3 papers)Journal of Applied Physics (3 papers)
Partner nations: Germany Switzerland Italy

In The Last Decade

H. Ch. Alt

66 papers receiving 1.2k citations

Peers

Countries citing papers authored by H. Ch. Alt

Since Specialization

Citations

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

Fields of papers citing papers by H. Ch. Alt

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Ch. Alt. 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 H. Ch. Alt. The network helps show where H. Ch. Alt may publish in the future.

Co-authorship network

The 25 scholars most cited alongside H. Ch. Alt, 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 H. Ch. Alt Line = papers co-authored together H. Ch. Alt links everyone, so they are left out of the graph.

All Works

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

20 of 20 papers shown

#	Work
1	Infrared absorption spectroscopy of a carbon–oxygen complex in gallium arsenide physica status solidi (b) ·H. Ch. Alt, Alfred Kersch, Hans E. Wagner	2012	2
2	Symmetry and structure of N–O shallow donor complexes in silicon Physica B Condensed Matter ·H. Ch. Alt, Hans E. Wagner	2011	1
3	Comparative mid- and far-infrared spectroscopy of nitrogen–oxygen complexes in silicon Physica B Condensed Matter ·H. Ch. Alt, Hans E. Wagner	2009	3
4	N–O related shallow donors in silicon: Stoichiometry investigations Applied Physics Letters ·Hans E. Wagner, H. Ch. Alt, Wilfried von Ammon, F. Bittersberger, Andreas Huber, V. (Vladislav) Dřínek	2007	10
5	Splitting of the local mode frequency of substitutional nitrogen in (Ga, In)(As, N) alloys due to symmetry lowering Semiconductor Science and Technology ·H. Ch. Alt, Y. V. Gomeniuk, Gregor Mußler	2006	9
6	Spectroscopic evidence for a N-Ga vacancy defect in GaAs Physical Review B ·H. Ch. Alt, Y. V. Gomeniuk, B. Wiedemann	2004	5
7	Measurement of boron and phosphorus concentration in silicon by low-temperature FTIR spectroscopy Applied Physics A ·Md Jalal Uddin, Mercy Teresa Sancan Moreira, R. Scala, V. Friese, H. Ch. Alt, Huai-De Huang	2004	8
8	Local mode frequencies of theNAs−InGanearest-neighbor pair in(Ga,In)(As,N)alloys Physical Review B ·H. Ch. Alt, Y. V. Gomeniuk	2004	20
9	Far‐infrared spectroscopy of shallow acceptors in semi‐insulating GaAs: evidence for defect interactions with EL2 physica status solidi (b) ·H. Ch. Alt, Y. V. Gomeniuk, Osvald Taroreh	2002	2
10	Assessment of carbon concentrations in polycrystalline and monocrystalline gallium arsenide using SSMS, FTIR, and CPAA Materials Science and Engineering B ·B. Wiedemann, H. Ch. Alt, Κ. Bethge, J.D. Meyer, Diego Alejandro Mejia Montañez	1999	1
11	Optically detected magnetic resonance investigations on titanium and vanadium ions in CdTe Optical Materials ·D. R. Prothero, H. Ch. Alt, D.M. Hofmann, B. K. Meyer, J. Kreissl, R. Schwarz, K.W. Benz	1995	13
12	Shallow donors in GaN—The binding energy and the electron effective mass Solid State Communications ·B. K. Meyer, D. Volm, 程露阳, H. Ch. Alt, Theeradetch Detchprohm, Engin Karaşin, Isamu Akasaki	1995	131
13	The paramagnetic charge state of substitutional oxygen in GaAs Applied Physics Letters ·Matthias Linde, J.‐M. Spaeth, H. Ch. Alt	1995	12
14	A study of dislocations, precipitates, and deep level EL2 in LEC GaAs grown under Ga-rich conditions physica status solidi (a) ·C. Frigeri, J.L. Weyher, H. Ch. Alt	1993	6
15	Electrically Active Oxygen in Gallium Arsenide Materials science forum ·H. Ch. Alt	1992	4
16	As_Gaantisite defects in LT GaAs as studied by magnetic resonance and magneto-optical techniques Semiconductor Science and Technology ·W. Jost, M. Kunzer, U. Kaufmann, K. Köhler, J. Schneider, H. Ch. Alt	1992	9
17	Distribution of the deep acceptor Fe in semi-insulating InP in both its charge states Semiconductor Science and Technology ·Wolfgang Meier, H. Ch. Alt, Th. Vetter, J. Völkl, A. Winnacker	1991	17
18	High-resolution imaging of the EL2 distribution in thin semi-insulating GaAs wafers: A comparison with x-ray topography Journal of Applied Physics ·H. Ch. Alt, Yaozong YANG	1986	22
19	Photoluminescence study of nitrogen implanted silicon Applied Physics Letters ·H. Ch. Alt, L. Tapfer	1984	9
20	Determination of the n‐Ionization Potential of 2‐Trimethylsilylpyridine by Photoelectron Spectroscopy Angewandte Chemie International Edition in English ·E. Heilbronner, Volker Hornung, H. Böck, H. Ch. Alt	1969	17

About H. Ch. Alt

H. Ch. Alt is a scholar working on Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Materials Chemistry and Radiation, having authored 67 papers that have together received 1.2k indexed citations. Recurring topics across this work include Semiconductor materials and devices (29 papers), Semiconductor Quantum Structures and Devices (18 papers), Silicon Nanostructures and Photoluminescence (18 papers), Semiconductor materials and interfaces (16 papers), GaN-based semiconductor devices and materials (14 papers), Silicon and Solar Cell Technologies (12 papers), Ion-surface interactions and analysis (6 papers) and Thin-Film Transistor Technologies (6 papers). The work is most often cited by research in Condensed Matter Physics (316 citations), Atomic and Molecular Physics, and Optics (691 citations), Electrical and Electronic Engineering (917 citations), Materials Chemistry (543 citations) and Electronic, Optical and Magnetic Materials (122 citations). H. Ch. Alt has collaborated with scholars based in Germany, Switzerland and Italy. Frequent co-authors include B. K. Meyer, D.M. Hofmann, E. Weigel, T. Muschik, M. Salk, K. W. Benz, G. Müller‐Vogt, Wolfgang Stadler, E. Rupp and Y. V. Gomeniuk. Their work appears in journals such as Applied Physics Letters, Physica B Condensed Matter, Semiconductor Science and Technology, 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.

Explore authors with similar magnitude of impact