M. Helmle

864 total citations
16 papers, 702 citations indexed

About

M. Helmle is a scholar working on Spectroscopy, Materials Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, M. Helmle has authored 16 papers receiving a total of 702 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Spectroscopy, 10 papers in Materials Chemistry and 4 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in M. Helmle's work include Advanced NMR Techniques and Applications (10 papers), Solid-state spectroscopy and crystallography (7 papers) and Organic and Molecular Conductors Research (4 papers). M. Helmle is often cited by papers focused on Advanced NMR Techniques and Applications (10 papers), Solid-state spectroscopy and crystallography (7 papers) and Organic and Molecular Conductors Research (4 papers). M. Helmle collaborates with scholars based in Germany, Netherlands and Sweden. M. Helmle's co-authors include Malcolm H. Levitt, Narayanan D. Kurur, Niels Chr. Nielsen, Ole G. Johannessen, A. Hager, Michael Mehring, F. Rachdi, Burkhard Bechinger, G. Zimmer and Peter J. E. Verdegem and has published in prestigious journals such as Journal of the American Chemical Society, Physical review. B, Condensed matter and Biochemistry.

In The Last Decade

M. Helmle

16 papers receiving 687 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
M. Helmle Germany	12	480	390	227	133	100	16	702
A. Detken Germany	14	582 1.2×	455 1.2×	195 0.9×	162 1.2×	85 0.8×	19	787
Teruaki Fujito Japan	15	345 0.7×	200 0.5×	162 0.7×	113 0.8×	74 0.7×	36	591
Andrew C. Kolbert United States	17	896 1.9×	615 1.6×	427 1.9×	158 1.2×	100 1.0×	34	1.2k
David D. Laws United States	14	657 1.4×	366 0.9×	129 0.6×	265 2.0×	49 0.5×	17	951
Gregory L. Olsen United States	17	467 1.0×	344 0.9×	206 0.9×	267 2.0×	68 0.7×	48	942
Jaan Past Estonia	13	729 1.5×	455 1.2×	271 1.2×	130 1.0×	94 0.9×	16	869
Christopher V. Grant United States	19	318 0.7×	231 0.6×	97 0.4×	422 3.2×	123 1.2×	31	860
Tobias Bremi Switzerland	12	511 1.1×	239 0.6×	154 0.7×	411 3.1×	112 1.1×	12	669
Evgeny Markhasin United States	6	583 1.2×	421 1.1×	133 0.6×	79 0.6×	168 1.7×	8	697

Countries citing papers authored by M. Helmle

Since Specialization

Citations

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

Fields of papers citing papers by M. Helmle

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of M. Helmle

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

All Works

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16 of 16 papers shown

Helmle, M., et al.. (2000). Refinement of the Geometry of the Retinal Binding Pocket in Dark-Adapted Bacteriorhodopsin by Heteronuclear Solid-State NMR Distance Measurements. Biochemistry. 39(33). 10066–10071. 14 indexed citations

Helmle, M., Peter J. E. Verdegem, Xiao‐Long Feng, et al.. (1999). Anomalous Rotational Resonance Spectra in Magic-Angle Spinning NMR. Journal of Magnetic Resonance. 140(2). 379–403. 34 indexed citations

Bechinger, Burkhard, et al.. (1999). Peptide structural analysis by solid-state NMR spectroscopy. Biopolymers. 51(3). 174–190. 71 indexed citations

Feng, Xiao‐Long, Peter J. E. Verdegem, M. Helmle, et al.. (1999). Rotational resonance NMR of -labelled retinal: quantitative internuclear distance determination. Solid State Nuclear Magnetic Resonance. 14(2). 81–90. 14 indexed citations

Verdegem, Peter J. E., M. Helmle, Johan Lugtenburg, & Huub J. M. de Groot. (1997). Internuclear Distance Measurements up to 0.44 nm for Retinals in the Solid State with 1-D Rotational Resonance ¹³C MAS NMR Spectroscopy. Journal of the American Chemical Society. 119(1). 169–174. 25 indexed citations

Kurur, Narayanan D., et al.. (1995). Efficient dipolar recoupling in the NMR of rotating solids. A sevenfold symmetric radiofrequency pulse sequence. Chemical Physics Letters. 242(3). 304–309. 354 indexed citations

Karlsson, Torgny, M. Helmle, Narayanan D. Kurur, & Malcolm H. Levitt. (1995). Rotational resonance echoes in the nuclear magnetic resonance of spinning solids. Chemical Physics Letters. 247(4-6). 534–540. 14 indexed citations

Zimmer, G., M. Helmle, Michael Mehring, & F. Rachdi. (1994). Lattice Dynamics and ¹³ C Paramagnetic Shift in K ₄ C ₆₀. Europhysics Letters (EPL). 27(7). 543–548. 23 indexed citations

Rachdi, F., Jürgen R. Reichenbach, Lucyna Firlej, et al.. (1993). High resolution 13C NMR of K6C60. Solid State Communications. 87(6). 547–550. 28 indexed citations

10.

Zimmer, G., M. Helmle, Michael Mehring, et al.. (1993). Analysis of ⁸⁷ Rb and ¹³ C Hyperfine Interaction in Rb ₃ C ₆₀. Europhysics Letters (EPL). 24(1). 59–64. 38 indexed citations

11.

Rachdi, F., Teresa Nunes, M. Ribet, et al.. (1992). Extremely large locally resolved C13 Knight shifts in the organic conductor N,N-dimethyl-thiomorpholinium bis(tetracyanoquinodimethane) [DMTM(TCNQ)2]. Physical review. B, Condensed matter. 45(14). 8134–8137. 6 indexed citations

12.

Helmle, M., John Reiner, U. Rempel, et al.. (1991). Locally resolved 13C hyperfine shifts in (DMe-DCNQI)2-M radical anion salts: A comparative study. Synthetic Metals. 42(1-2). 1763–1768. 8 indexed citations

13.

Helmle, M., et al.. (1988). Proton Knight shift in the organic conductor (fluoranthenyl)2AsF6. Physical review. B, Condensed matter. 37(13). 7205–7208. 8 indexed citations

14.

Mehring, Michael, et al.. (1987). Magnetic resonance of (FA)2X type organic conductors. Synthetic Metals. 19(1-3). 349–354. 13 indexed citations

15.

Helmle, M., et al.. (1987). Knight Shift in the Organic Conductor (Fluoranthenyl)₂AsF₆. Berichte der Bunsengesellschaft für physikalische Chemie. 91(9). 911–913. 3 indexed citations

16.

Hager, A. & M. Helmle. (1981). Properties of an ATP-Fueled, Cl^--Dependent Proton Pump Localized in Membranes of Microsomal Vesicles from Maize Coleoptiles. Zeitschrift für Naturforschung C. 36(11-12). 997–1008. 49 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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