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D. Spemann · SciRah

Researcher profile · Semantic Scholar

D. Spemann

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D. Spemann — researcher profile on SciRah

h-index: 37
Works: 176
Citations: 6,701

Most-cited papers

Myelin and iron concentration in the human brain: A quantitative study of MRI contrast
Carsten Stüber, M. Morawski, Andreas Schäfer, C. Labadie +8 more
2014NeuroImage619 citations
Semantic Scholar
Defect-induced magnetic order in pure ZnO films
M. Khalid, M. Ziese, A. Setzer, P. Esquinazi +11 more
2009265 citations
Semantic Scholar
The role of hydrogen in room-temperature ferromagnetism at graphite surfaces
H. Ohldag, P. Esquinazi, E. Arenholz, D. Spemann +3 more
2009102 citations Open access
Semantic Scholar
Experimental evidence for two-dimensional magnetic order in proton bombarded graphite
J. Barzola-Quiquia, P. Esquinazi, M. Rothermel, D. Spemann +2 more
200798 citations Open access
Semantic Scholar
Ubiquity of ferromagnetic signals in common diamagnetic oxide crystals
M. Khalid, A. Setzer, M. Ziese, P. Esquinazi +3 more
201088 citations
Semantic Scholar
Defect-Induced Magnetism in Solids
P. Esquinazi, W. Hergert, D. Spemann, A. Setzer +1 more
2013IEEE transactions on magnetics80 citations Open access
Semantic Scholar
Electrical and magnetic properties of RE-doped ZnO thin films (RE = Gd, Nd)
M. Ungureanu, H. Schmidt, Qing-Yu Xu, H. von Wenckstern +4 more
200773 citations
Semantic Scholar
Identification of a possible superconducting transition above room temperature in natural graphite crystals
C. E. Precker, P. Esquinazi, A. Champi, J. Barzola-Quiquia +10 more
201663 citations Open access
Semantic Scholar
A quantitative study of the intracellular concentration of graphene/noble metal nanoparticle composites and their cytotoxicity.
Xiang-Yan Zhou, M. Dorn, J. Vogt, D. Spemann +5 more
2014Nanoscale63 citations
Semantic Scholar
s−dexchange interaction induced magnetoresistance in magnetic ZnO
Qing-Yu Xu, Lars Hartmann, H. Schmidt, H. Hochmuth +3 more
200762 citations
Semantic Scholar
Magnetic order in graphite: Experimental evidence, intrinsic and extrinsic difficulties
P. Esquinazi, J. Barzola-Quiquia, D. Spemann, M. Rothermel +4 more
200949 citations Open access
Semantic Scholar
Luminescence and surface properties of MgxZn1−xO thin films grown by pulsed laser deposition
S. Heitsch, G. Zimmermann, D. Fritsch, C. Sturm +9 more
200749 citations
Semantic Scholar
Defect‐Induced Magnetism in Nonmagnetic Oxides: Basic Principles, Experimental Evidence, and Possible Devices with ZnO and TiO2
P. Esquinazi, W. Hergert, M. Stiller, L. Botsch +7 more
2020physica status solidi (b)47 citations Open access
Semantic Scholar
Deterministic Shallow Dopant Implantation in Silicon with Detection Confidence Upper‐Bound to 99.85% by Ion–Solid Interactions
A. M. Jakob, S. G. Robson, V. Schmitt, V. Mourik +8 more
2020Advances in Materials44 citations Open access
Semantic Scholar
Magnetoresistance and anomalous Hall effect in magnetic ZnO films
Qing-Yu Xu, Lars Hartmann, H. Schmidt, H. Hochmuth +6 more
200742 citations
Semantic Scholar
Systematic investigation of the properties of TiO 2 films grown by reactive ion beam sputter deposition
C. Bundesmann, T. Lautenschläger, D. Spemann, A. Finzel +3 more
201738 citations Open access
Semantic Scholar
Silicide induced ion beam patterning of Si(001)
M. Engler, F. Frost, Sven Müller, S. Macko +6 more
2014Nanotechnology37 citations Open access
Semantic Scholar
Possible pitfalls in search of magnetic order in thin films deposited on single crystalline sapphire substrates
R. Salzer, D. Spemann, P. Esquinazi, R. Höhne +4 more
200737 citations
Semantic Scholar
Local lattice distortions in oxygen deficient Mn-doped ZnO thin films, probed by electron paramagnetic resonance
M. Lorenz, R. Böttcher, Stefan Friedländer, A. Pöppl +2 more
201436 citations Open access
Semantic Scholar
Optical and structural properties of MgZnO/ZnO hetero- and double heterostructures grown by pulsed laser deposition
S. Heitsch, G. Benndorf, G. Zimmermann, C. Schulz +6 more
200735 citations
Semantic Scholar
Detection of small bunches of ions using image charges
P. Räcke, D. Spemann, J. Gerlach, B. Rauschenbach +1 more
2018Scientific Reports30 citations Open access
Semantic Scholar
Proton beam writing of submicrometer structures at LIPSION
F. Menzel, D. Spemann, S. Petriconi, J. Lenzner +1 more
200730 citations
Semantic Scholar
Magnetic order and superconductivity observed in bundles of Double-Wall Carbon Nanotubes
J. Barzola-Quiquia, P. Esquinazi, M. Lindel, D. Spemann +2 more
201527 citations Open access
Semantic Scholar
Oxide Thin Film Heterostructures on Large Area, with Flexible Doping, Low Dislocation Density, and Abrupt Interfaces: Grown by Pulsed Laser Deposition
M. Lorenz, H. Hochmuth, C. Grüner, H. Hilmer +7 more
201027 citations Open access
Semantic Scholar
Bright optical centre in diamond with narrow, highly polarised and nearly phonon-free fluorescence at room temperature
R. John, J. Lehnert, M. Mensing, D. Spemann +2 more
201726 citations Open access
Semantic Scholar
Trace element content and magnetic properties of commercial HOPG samples studied by ion beam microscopy and SQUID magnetometry
D. Spemann, P. Esquinazi, A. Setzer, W. Böhlmann
201324 citations Open access
Semantic Scholar
An advanced electric propulsion diagnostic (AEPD) platform for in-situ characterization of electric propulsion thrusters and ion beam sources
C. Bundesmann, C. Eichhorn, F. Scholze, D. Spemann +15 more
201621 citations Open access
Semantic Scholar
Materials analysis and modification at LIPSION – Present state and future developments
D. Spemann, T. Reinert, J. Vogt, T. Andrea +8 more
201121 citations
Semantic Scholar
The influence of iron, fluorine and boron implantation on the magnetic properties of graphite
R. Höhne, P. Esquinazi, V. Heera, H. Weishart +2 more
200821 citations
Semantic Scholar
Vacancy diffusion and nitrogen-vacancy center formation near the diamond surface
P. Räcke, L. Pietzonka, Jan Meijer, D. Spemann +1 more
202120 citations
Semantic Scholar
Nanoscale ion implantation using focussed highly charged ions
P. Räcke, R. Wunderlich, J. Gerlach, J. Meijer +1 more
2020New Journal of Physics20 citations Open access
Semantic Scholar
Topological insulator thin films starting from the amorphous phase-Bi2Se3 as example
J. Barzola-Quiquia, T. Lehmann, M. Stiller, D. Spemann +2 more
201519 citations Open access
Semantic Scholar
Fabrication of microstructures in III–V semiconductors by proton beam writing
F. Menzel, D. Spemann, J. Lenzner, W. Böhlmann +2 more
200918 citations
Semantic Scholar
Systematic investigation of the reactive ion beam sputter deposition process of SiO2
M. Mateev, T. Lautenschläger, D. Spemann, A. Finzel +3 more
201817 citations
Semantic Scholar
Strong out-of-plane magnetic anisotropy in ion irradiated anatase TiO2 thin films
M. Stiller, J. Barzola-Quiquia, P. Esquinazi, D. Spemann +3 more
201616 citations Open access
Semantic Scholar
Degenerate interface layers in epitaxial scandium-doped ZnO thin films
M. Lorenz, C. Schmidt, G. Benndorf, Tammo Böntgen +5 more
201314 citations
Semantic Scholar
Characterization of an RF excited broad beam ion source operating with inert gases
E. Rohkamm, D. Spemann, F. Scholze, F. Frost
2021Journal of Applied Physics13 citations Open access
Semantic Scholar
Titanium 3d ferromagnetism with perpendicular anisotropy in defective anatase
M. Stiller, A. N'Diaye, H. Ohldag, J. Barzola-Quiquia +9 more
2020Physical review B13 citations Open access
Semantic Scholar
Reactive Ar ion beam sputter deposition of TiO2 films: Influence of process parameters on film properties
C. Bundesmann, T. Lautenschläger, E. Thelander, D. Spemann
201713 citations
Semantic Scholar
Coupling of Micromagnetic and Structural Properties Across the Martensite and Curie Temperatures in Miniaturized Ni‐Mn‐Ga Ferromagnetic Shape Memory Alloys
A. M. Jakob, M. Hennes, Marcus Müller, D. Spemann +1 more
201313 citations
Semantic Scholar
Proton-induced magnetic order in carbon: SQUID measurements
J. Barzola-Quiquia, S. Petriconi, P. Esquinazi, M. Rothermel +3 more
200613 citations Open access
Semantic Scholar
Single- and two-photon absorption laser-induced fluorescence spectroscopy in rare gases for gridded ion thruster diagnostics
C. Eichhorn, Lukas Pietzonka, F. Scholze, C. Bundesmann +3 more
2022EPJ Techniques and Instrumentation12 citations Open access
Semantic Scholar
On the radiation hardness of (Mg,Zn)O thin films grown by pulsed-laser deposition
F. Schmidt, H. von Wenckstern, D. Spemann, M. Grundmann
201212 citations
Semantic Scholar
Properties of gallium oxide thin films grown by ion beam sputter deposition at room temperature
D. Kalanov, Y. Unutulmazsoy, D. Spemann, J. Bauer +2 more
2022Journal of Vacuum Science & Technology A11 citations Open access
Semantic Scholar
Image charge detection statistics relevant for deterministic ion implantation
P. Räcke, R. Staacke, J. Gerlach, J. Meijer +1 more
2019Journal of Physics D: Applied Physics11 citations Open access
Semantic Scholar
Correlation of process parameters and properties of TiO2 films grown by ion beam sputter deposition from a ceramic target
C. Bundesmann, Thomas Lautenschläge, D. Spemann, A. Finzel +2 more
201711 citations
Semantic Scholar
Evidence for Magnetic Order in Graphite from Magnetization and Transport Measurements
D. Spemann, P. Esquinazi
201611 citations
Semantic Scholar
Low-energy μSR and SQUID evidence of magnetism in highly oriented pyrolytic graphite
M. Dubman, T. Shiroka, H. Luetkens, M. Rothermel +7 more
201011 citations
Semantic Scholar
Study of the negative magneto-resistance of single proton-implanted lithium-doped ZnO microwires
I. Lorite, C. Zandalazini, P. Esquinazi, D. Spemann +13 more
2015Journal of Physics: Condensed Matter10 citations Open access
Semantic Scholar
3D-structures with arbitrary shapes created in negative resists by grayscale proton beam writing
F. Menzel, D. Spemann, T. Koal, T. Butz
201110 citations
Semantic Scholar

Frequent co-authors

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P. Esquinazi×19
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P. Esquinazi — researcher profile on SciRah
A. Setzer×11
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A. Setzer — researcher profile on SciRah
T. Butz×11
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T. Butz — researcher profile on SciRah
M. Lorenz×10
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M. Lorenz — researcher profile on SciRah

×10

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M. Grundmann — researcher profile on SciRah

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H. Hochmuth — researcher profile on SciRah

J. Barzola-Quiquia×8

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J. Barzola-Quiquia — researcher profile on SciRah

C. Bundesmann×8

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C. Bundesmann — researcher profile on SciRah

M. Rothermel×6

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M. Rothermel — researcher profile on SciRah

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J. Meijer — researcher profile on SciRah

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W. Hergert — researcher profile on SciRah

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H. Schmidt — researcher profile on SciRah