Universität zu Köln

A

Aimon, Akfiny Hasdi (2014). Thin films preparation of Fe(3−x)Co(x)O(4) with x = 0, 0.1, 0.5, 1 and their properties. PhD thesis, Universität zu Köln.

Altendorf, Simone (2011). Growth, electronic structure, and properties of electron-doped EuO thin films. Thesis Abstract, Universität zu Köln.

Ahmida, Mahmoud Abdelrazek (2009). EuCu2(Ge1-xSix)2: A Model System to Study Charge Fluctuations across a Quantum Phase Transition. Thesis Abstract, Universität zu Köln.

B

Borgwardt, Nick (2019). Optics on materials with strong spin-orbit coupling: topological insulators Bi2-xSbxTe3-ySey and the j=1/2 compounds Na2IrO3 and alpha-RuCl3. PhD thesis, Universität zu Köln.

Breunig, Oliver (2015). Thermodynamics of the Spin-Chain Compounds Cs2CoCl4 and Cu(C4H4N2)(NO3)2. PhD thesis, Universität zu Köln.

Buchholz, Marcel (2013). Local Symmetry and Domain Patterns: Ordering Phenomena in Transition-Metal Oxides. PhD thesis, Universität zu Köln.

Baum, Max Michael (2013). Neutron-Scattering Studies on Chiral Multiferroics. PhD thesis, Universität zu Köln.

Brand, Johanna (2013). Magnetismus von unkonventionellen Supraleitern am Beispiel von Ruthenat- und Eisen-Arsenid-Verbindungen. PhD thesis, Universität zu Köln.

Bleikamp, Sebastian (2010). Stacking Faults and Twinning in Homoepitaxial Thin Films on Ir(111). PhD thesis, Universität zu Köln.

Burnus, Tobias (2008). Study of charge, spin and orbital states in novel transiton-metal oxides using x-ray absorption spectroscopy. Thesis Abstract, Universität zu Köln.

Burnus, Tobias (2008). Study of Charge, Spin and Orbital States in Novel Transition-Metal Oxides Using X-Ray Absorption Spectroscopy. PhD thesis, Universität zu Köln.

Benomar, Mohammed (2007). Einkristall-Präparation und Charakterisierung von dotiertem La2MO4 mit M = Co, Mn und Ni. Thesis Abstract, Universität zu Köln.

Benckiser, Eva Vera (2007). Optical Spectroscopy of Orbital and Magnetic Excitations in Vanadates and Cuprates. PhD thesis, Universität zu Köln.

Braak, Heiko (2006). Mit Mangan und Eisen ko-dotiertes Germanium: ein ferromagnetischer Halbleiter? PhD thesis, Universität zu Köln.

Baier, Jörg (2006). Magnetoelastische Kopplung in multiferroischem GdMnO_3 und metamagnetischem Ca_(2-x)Sr_xRuO_4. PhD thesis, Universität zu Köln.

Berggold, Kai (2006). Thermal Transport in Cuprates, Cobaltates, and Manganites. PhD thesis, Universität zu Köln.

Bakehe, Sylvie Noelle (2002). Präparation und Charakterisierung von Selten-Erd-dotierten Nickelaten und einkristallinen, elektrodotierten Hochtemperatur-Supraleitern. PhD thesis, Universität zu Köln.

C

Craes, Fabian (2014). Scanning Tunneling Spectroscopy on Graphene Nanostructures. PhD thesis, Universität zu Köln.

Chin, Yi-Ying (2011). Valence, Orbital, and Spin States of Cobaltates: A Soft X-ray Absorption Study. Thesis Abstract, Universität zu Köln.

Chang, Chun-Fu (2009). Study of Charge, Spin, and Orbital States in Strongly Correlated Transition-Metal Oxides. Thesis Abstract, Universität zu Köln.

Cwik, Matthias (2007). The Interplay of Lattice, Spin, and Charge Degrees of Freedom in Layered Cobaltates. PhD thesis, Universität zu Köln.

D

Di Pietro, P., Mitrano, M., Caramazza, S., Capitani, F., Lupi, S., Postorino, P., Ripanti, F., Joseph, B., Ehlen, N., Grüneis, A., Sanna, A., Profeta, G., Dore, P. and Perucchi, A. (2018). Emergent Dirac carriers across a pressure-induced Lifshitz transition in black phosphorus. Physical review B, 98. p. 165111. APS Physics. ISSN 2469-9969

Dai, Yang (2017). Tailoring the Electronic Properties of Epitaxial Oxide Films via Strain for SAW and Neuromorphic Applications. PhD thesis, Universität zu Köln.

E

Ehlen, N., Sanna, A., Senkovskiy, B. V., Petaccia, L., Fedorov, A. V., Profeta, G. and Grüneis, A. (2018). Direct observation of a surface resonance state and surface band inversion control in black phosphorus. Physical review B, 97 (4). 045143. APS Physics. ISSN 2469-9969

Ehlen, N., Senkovskiy, B. V., Fedorov, A. V., Perucchi, A., Pietro, P. Di, Sanna, A., Profeta, G., Petaccia, L. and Gruneis, A. (2016). Evolution of electronic structure of few-layer phosphorene from angle-resolved photoemission spectroscopy of black phosphorous. Physical Review B, 94. p. 245410. APS Physics. ISSN 2469-9969

Engler, Martin (2015). Self-organized Ion Beam Pattern Formation on Si(001). PhD thesis, Universität zu Köln.

F

Fedorov, A., Praveen, C. S., Verbitskiy, N. I., Haberer, D., Usachov, D., Vyalikh, D. V., Nefedov, A., Woll, C., Petaccia, L., Piccinin, S., Sachdev, H., Knupfer, M., Buchner, B., Fabris, S. and Gruneis, A. (2015). Efficient gating of epitaxial boron nitride monolayers by substrate functionalization. Physical review B, 92 (12). APS Physics. ISSN 2469-9969

Finger, Thomas (2013). Analyse magnetischer Korrelationen in geschichteten oder multiferroischen Übergangsmetalloxiden durch Neutronenstreuung. PhD thesis, Universität zu Köln.

Fahrendorf, Sarah (2012). Single NdPc2 Molecules on Surfaces: Adsorption, Interaction, and Molecular Magnetism. PhD thesis, Universität zu Köln.

Förster, Daniel F. (2011). EuO and Eu on metal crystals and graphene: interface effects and epitaxial films. PhD thesis, Universität zu Köln.

Forthaus, Martin K. (2010). Pressure-induced unusual ground states in selected correlated electron systems. Thesis Abstract, Universität zu Köln.

G

Gruneis, A., Senkovskiy, B. V., Fedorov, A. V., Hell, M. and Michel, S. (2018). Ultrahigh Vacuum Optical Spectroscopy of Chemically Functionalized Graphene Nanoribbons. In: Encyclopedia of Interfacial Chemistry 1st Edition Surface Science and Electrochemistry, pp. 367-374. Elsevier. ISBN 9780128097397

Grams, Christoph (2016). (Quantum-) critical dynamics of magnetoelectric materials. PhD thesis, Universität zu Köln.

Gatto, Andrea (2015). The global impact of stellar winds and supernovae on the interstellar medium. PhD thesis, Universität zu Köln.

Greben, Kyrylo (2015). Modification and Characterization of Potential Bioelectronic Interfaces. PhD thesis, Universität zu Köln.

Grellmann, Thomas (2014). Cryogenic Break-Junction Characterization of Single Organic Molecules. Thesis Abstract, Universität zu Köln.

Gerber, Timm (2013). Interaction of Graphene and Templated Cluster Arrays with CO, H2, and O2. PhD thesis, Universität zu Köln.

Gegner, Jan (2010). Electronic structure of selected ternary intermetallic compounds probed by photoelectron spectroscopy. Thesis Abstract, Universität zu Köln.

Gößling, Alexander (2007). Electronic structure of Titanates and layered Manganites probed by optical spectroscopy. PhD thesis, Universität zu Köln.

H

Hall, J, Ehlen, N, Berges, J, van Loon, E, van Efferen, C, Murray, C, Rösner, M, Li, J, Senkovskiy, BV, Hell, M, Rolf, M, Heider, T, Asensio, MC, Avila, J, Plucinski, L, Wehling, T, Grüneis, A and Michely, T (2019). Environmental Control of Charge Density Wave Order in Monolayer 2H-TaS2. ACS Nano.

Hell, Martin Gordon (2019). Combined spectroscopic and electronic transport characterization of doped graphene. PhD thesis, Universität zu Köln.

Hell, Martin G., Ehlen, Niels, Senkovskiy, Boris V., Hasdeo, Eddwi H., Fedorov, Alexander, Dombrowski, Daniela, Busse, Carsten, Michely, Thomas, di Santo, Giovanni, Petaccia, Luca, Saito, Riichiro and Grüneis, Alexander (2018). Resonance Raman spectrum of doped epitaxial graphene at the Lifshitz transition. Nano letters. ACS Publications. ISSN 1530-6992

Herbig, Charlotte (2017). Ion Irradiation and Carbon Radical Exposure of Graphene and Hexagonal Boron Nitride on Iridium(111). PhD thesis, Universität zu Köln.

Hell, M. G., Senkovskiy, B. V., Fedorov, A. V., Nefedov, A., Woll, C. and Gruneis, A. (2016). Facile preparation of Au(111)/MICA substrates for high-quality graphene nanoribbon synthesis. physica status solidi (b), 253 (12). pp. 2362-2365. Wiley Online Library. ISSN 1521-3951

Holbein, Simon (2016). Neutron Scattering Studies on Complex Magnetic Structures in Magnetoelectric Materials. PhD thesis, Universität zu Köln.

Huttmann, Felix (2016). Graphene on Iridium with Aromatic Molecules and 3d or 4f Metals: Binding, Doping, Magnetism, and Organometallic Synthesis. PhD thesis, Universität zu Köln.

Heyer, Oliver (2012). Entwicklung von Methoden zur Untersuchung luftinstabiler Materialien und Messungen der elektrischen und thermodynamischen Eigenschaften von EuC2 und LiFeAs. PhD thesis, Universität zu Köln.

Haupricht, Tim Jakobus Thomas (2011). Transition metal impurities in wide bandgap oxides: fundamental model systems for strongly correlated oxides. PhD thesis, Universität zu Köln.

Hollmann, Nils (2010). Local Magnetism and Orbital Occupation in Novel Transition Metal Oxides. Thesis Abstract, Universität zu Köln.

Hilgers, Christina (2009). The Electronic Structure of Spin Ladders and Spin Chains Studied by Ellipsometry. PhD thesis, Universität zu Köln.

Haverkort, Maurits (2005). Spin and orbital degrees of freedom in transition metal oxides and oxide thin films studied by soft x-ray absorption spectroscopy. PhD thesis, Universität zu Köln.

Hofmann, Michael (2002). Anomalous Heat Transport in Low-Dimensional Quantum Spin Systems. PhD thesis, Universität zu Köln.

Haibel, Astrid (2002). Signalausbreitung in photonischen Barrieren - Transmissions- und Reflexionszeitmessungen am Doppelprisma und an periodischen Strukturen. PhD thesis, Universität zu Köln.

Herbstritt, Frank Nikolaus (2002). Ladungstransport und Rauschen in submikrometer-strukturierten Korngrenzenkontakten aus YBA 2 Cu 3 O 7-delta. Thesis Abstract, Universität zu Köln.

Heß, Christian Peter (2002). Thermischer Transport in Übergangsmetalloxiden mit niedrigdimensionalen Ladungs- und Spinstrukturen. Thesis Abstract, Universität zu Köln.

J

Jolie, Wouter (2017). Understanding, controlling and manipulating the electronic properties of layered materials. PhD thesis, Universität zu Köln.

Johannsen, Niko (2008). Nernst effect of Ni-doped NdBa2Cu3O7-d and transport properties in UPt2Si2. PhD thesis, Universität zu Köln.

K

Kunkemöller, Stefan (2018). Spin-orbit effects and competing magnetic correlations in layered Ruthenates: A neutron scattering study using floating-zone grown single crystals. PhD thesis, Universität zu Köln.

Klinkhammer, Jürgen (2013). Electronic Structure and Magnetism of EuO Films on the Nanometer Scale. PhD thesis, Universität zu Köln.

Kolland, Gerhard (2013). Thermal Conductivity of the Spin-Ice Compound Dy2Ti2O7 and the Spin-Chain System BaCo2V2O8. PhD thesis, Universität zu Köln.

Komarek, Alexander Christoph (2009). Complex ordering phenomena in transition metal oxides and oxyhalides. PhD thesis, Universität zu Köln.

Kordonis, Konstantinos (2007). Wärmetransport in eindimensionalen Spinsystemen. PhD thesis, Universität zu Köln.

Koethe, Thomas Christoph (2006). Bulk sensitive Photoelectron Spectroscopy of strongly correlated transition metal oxides. PhD thesis, Universität zu Köln.

Kriener, Markus (2005). Spinzustandsänderung, magnetische Ordnung und Metall-Isolator-Übergang in Kobaltaten. PhD thesis, Universität zu Köln.

Kemen, Thomas (2002). Mesoskopische Normalleiter-Supraleiter-Systeme. PhD thesis, Universität zu Köln.

L

Langenbach, Malte (2019). Giant directional dichroism in chiral Ni_3TeO_6 in THz spectroscopy in high magnetic fields. PhD thesis, Universität zu Köln.

Lengsdorf, Roman G. (2005). Interplay between Transport, Magnetism and Structural Properties of Transition Metal Oxides under High Pressure. PhD thesis, Universität zu Köln.

Lennartz, Werner (2003). Strukturuntersuchungen an intrinsisch leitfähigen Polyanilin/PMMA-Blends. SAXS als Meßverfahren zur Bestimmung der Morphologie synthetischer Metalle. PhD thesis, Universität zu Köln.

Leinders, Harald (2001). Numerische Simulation effektiver Medien und Absorberstrukturen im Zeitbereich. PhD thesis, Universität zu Köln.

M

Markov, Aleksandr (2017). Tailoring and characterisation of bioelectronic interfaces. PhD thesis, Universität zu Köln.

Macko, Sven (2011). Mechanisms and Manipulation of Ion Beam Pattern Formation on Si(001). PhD thesis, Universität zu Köln.

Möller, Thomas André David (2009). Phonons and crystal-field excitations in highly correlated materials probed by optical spectroscopy. PhD thesis, Universität zu Köln.

N

Nikonov, Konstantin, Ehlen, Niels, Senkovskiy, Boris, Saigal, Nihit, Fedorov, Alexander, Nefedov, Alexei, Wöll, Christoph, di Santo, Giovanni, Petaccia, Luca and Grüneis, Alexander (2017). Synthesis and spectroscopic characterization of alkali-metal intercalated ZrSe2. Dalton Transactions, 47. pp. 2986-2991. RSC publishing. ISSN 1477-9226

Niesen, Sandra Katharina (2015). Synthesis and Characterizatin of Spin-Chain Compounds of the AM2V2O8 Type. PhD thesis, Universität zu Köln.

P

Pitikaris, Sebastian (2017). Local Mechanical Properties of Granular Media. Thesis Abstract, Universität zu Köln.

Pelzer, Ulrich (2013). Development of 121Sb Nuclear Forward Scattering and high pressure applications. Thesis Abstract, Universität zu Köln.

Plessel, Jochen (2002). Hochdruckuntersuchungen an Yb-Kondo-Gitter-Systemen in der Nähe einer magnetischen Instabilität. Thesis Abstract, Universität zu Köln.

R

Runte, Sven (2013). Atomic and Electronic Structure of Graphene and Graphene Intercalation Compounds. X-Ray Standing Wave and Scanning Tunnelling Microscopy Studies. PhD thesis, Universität zu Köln.

Reul, Julia Christina (2013). Effects of spin and orbital correlations on the optical spectral weights of transition-metal oxides. PhD thesis, Universität zu Köln.

Roth, Holger (2008). Single crystal growth and electron spectroscopy of d1-systems. PhD thesis, Universität zu Köln.

Rückamp, Reinhard (2006). Orbital excitations of transition-metal oxides in optical spectroscopy. PhD thesis, Universität zu Köln.

S

Senkovskiy, B.V., Usachov, D.Y., Fedorov, A.V., Marangoni, T., Haberer, D., Tresca, C., Profeta, G., Caciuc, V., Tsukamoto, S., Atodiresei, N., Ehlen, N., Chen, C., Avila, J., Asensio, M.C., Varykhalov, A.Y., Nefedov, A., Woll, C., Kim, T.K., Hoesch, M., Fischer, F.R. and Grüneis, A. (2018). Boron-Doped Graphene Nanoribbons: Electronic Structure and Raman Fingerprint. ACS Nano, 8 (12). pp. 7571-7582. American Chemical Society. ISSN 1936-0851

Senkovskiy, Boris V., Usachov, Dmitry Yu., Fedorov, Alexander V., Haberer, Danny, Ehlen, Niels, Fischer, Felix R. and Gruneis, Alexander (2018). Finding the hidden valence band of N=7 armchair graphene nanoribbons with angle-resolved photoemission spectroscopy. 2D Materials. IOP Publishing. ISSN 2053-1583

Saigal, Nihit, Wielert, Isabelle, Capeta, Davor, Vujicic, Natasa, Senkovskiy, Boris V., Hell, Martin, Kralj, Marko and Gruneis, Alexander (2018). Effect of lithium doping on the optical properties of monolayer MoS2. Applied Physics Letters, 112 (12). p. 121902. AIP Publishing. ISSN 0003-6951

Senkovskiy, B.V., Pfeiffer, M., Alavi, S.K., Bliesener, A., Zhu, J., Michel, S., Fedorov, A. V., German, R., Hertel, D., Haberer, D., Petaccia, L., Fischer, F.R., Meerholz, K., van Loosdrecht, P.H.M., Lindfors, K. and Grüneis, A. (2017). Making graphene nanoribbons photoluminescent. Nano letters, 17 (7). pp. 4029-4037. ACS Publications. ISSN 1530-6992

Struzzi, C., Praveen, C. S., Scardamaglia, M., Verbitskiy, N. I., Fedorov, A. V., Weinl, M., Schreck, M., Gruneis, A., Piccinin, S., Fabris, S. and Petaccia, L. (2016). Controlled thermodynamics for tunable electron doping of graphene on Ir(111). Physical review B, 94 (8). 085427. APS Physics. ISSN 2469-9950

Sanna, A., Fedorov, A. V., Verbitskiy, N. I., Fink, J., Krellner, C., Petaccia, L., Chikina, A., Usachov, D. Yu., Grüneis, A. and Profeta, G. (2016). First-principles and angle-resolved photoemission study of lithium doped metallic black phosphorous. 2D Materials, 3 (2). 025031. IOP Publishing. ISSN 2053-1583

Seehafer, Jörg Ulrich (2016). Der BOLD-Effekt in der funktionellen Magnetresonanztomographie bei hoher magnetischer Feldstärke und hoher räumlicher Auflösung an Ratten. PhD thesis, Universität zu Köln.

Scharffe, Simon (2016). Thermodynamics and Heat Transport of doped Spin-Ice Materials. PhD thesis, Universität zu Köln.

Schröder, Ulrike Anne (2016). Changing Graphene's Properties. Etching, Intercalation, and Deuteration. PhD thesis, Universität zu Köln.

Strigari, Fabio (2015). Hybridization and crystal-field effects in Kondo insulators studied by means of core-level spectroscopy. PhD thesis, Universität zu Köln.

Schumacher, Stefan (2014). Structure, Magnetism, and Binding of Novel Two-Dimensional Materials: Europium-Intercalated Graphene, Cluster Lattices, and Polar Oxide Bilayers. PhD thesis, Universität zu Köln.

Standop, Sebastian (2013). Water Adsorption and Ion Induced Defect Formation: A Comparative Study of Graphene and Noble Metal Surfaces. PhD thesis, Universität zu Köln.

Schmitz, Holger (2012). Optimization of a continuous-wave THz spectrometer for coherent broadband solid-state spectroscopy. PhD thesis, Universität zu Köln.

Schumann, Olaf Jochen (2010). Structural Investigations on layered Manganites and Ruthenates. PhD thesis, Universität zu Köln.

Sutarto, Ronny (2009). EuO and Gd-doped EuO thin films: epitaxial growth and properties. PhD thesis, Universität zu Köln.

Stein, Wolf-Dieter R. (2007). Struktur und Gitterdynamik in azentrischen Boraten. PhD thesis, Universität zu Köln.

Senff, Daniel (2007). Neutron Scattering Studies on Magnetic Excitations in Complex Ordered Manganites. PhD thesis, Universität zu Köln.

Steffens, Paul C. (2007). Magnetism in layered Ruthenates. PhD thesis, Universität zu Köln.

Schlappa, Justina (2006). Investigation of electronic order using resonant soft x-ray diffraction. PhD thesis, Universität zu Köln.

Stein, Simon (2004). Barrier and interface properties of magnetic tunneling junctions studied via electrical transport. Thesis Abstract, Universität zu Köln.

Schöneberger, Ralph (2002). Spezifische Wärme von La(5/8-x)Pr(x)Ca(3/8)MnO(3) und Li(2)CuO(2). PhD thesis, Universität zu Köln.

Spanoudaki, Anna (2001). Dielektrische Untersuchungen an Ferrofluiden zum Einfluss der Mikrostruktur auf die effektiven Eigenschaften von Kompositen. Thesis Abstract, Universität zu Köln.

T

Tresca, C., Verbitskiy, N.I., Fedorov, A., Gruneis, A. and Profeta, G. (2017). Alloyed surfaces: new substrates for graphene growth. Surface Science, 665. pp. 28-31. Elsevier. ISSN 0039-6028

U

Usachov, Dmitry Yu., Fedorov, Alexander V., Vilkov, Oleg Yu., Ogorodnikov, Ilya I., Kuznetsov, Mikhail V., Grüneis, Alexander, Laubschat, Clemens and Vyalikh, Denis V. (2018). Electron-phonon coupling in graphene placed between magnetic Li and Si layers on cobalt. Physical review B, 97 (15). 085132. APS Physics. ISSN 2469-9969

Usachov, Dmitry, Fedorov, Alexander V., Otrokov, Mikhail M., Chikina, Alla, Vilkov, Oleg, Petukhov, Anatoly, Rybkin, Artem G., Koroteev, Yury M., Chulkov, Evgueni V., Adamchuk, Vera K., Grueneis, Alexander, Laubschat, Clemens and Vyalikh, Denis V. (2015). Observation of single-spin Dirac fermions at the graphene/ferromagnet interface. Nano letters, 15 (4). pp. 2396-2401. ACS Publications. ISSN 1530-6992

Ulbrich, Holger (2012). Interplay between charge, orbital, and magnetic ordering in manganites. Thesis Abstract, Universität zu Köln.

V

Versteeg, Rolf Baldwin ORCID: 0000-0002-9928-5792 (2019). Optically probed order and dynamics in the chiral cluster magnet Cu2OSeO3. PhD thesis, Universität zu Köln.

Vetter, Ralf-Michael (2002). Simulation von Tunnelstrukturen - Experimentelle und theoretische Untersuchungen an Systemen mit anomaler Dispersion. PhD thesis, Universität zu Köln.

W

Waßer, Florian Tim (2018). Magnetic Excitations in Iron-based Superconductors. PhD thesis, Universität zu Köln.

Weinen, Jonas (2015). Hard X-Ray Photoelectron Spectroscopy: New Opportunities for Solid State Research. Thesis Abstract, Universität zu Köln.

Willers, Thomas (2011). Spectroscopic Investigations of the Crystal Field and Kondo Effect in 4f Heavy-Fermion Systems. Thesis Abstract, Universität zu Köln.

Windt, Marco Sascha (2002). Optical Spectroscopy of Spin Ladders. PhD thesis, Universität zu Köln.

Z

Zabel, Thomas (2004). Aufbau eines Tieftemperatur-Kalorimeters und kalorische Messungen an TlCuCl3 und Ca2-xSrxRuO4. PhD thesis, Universität zu Köln.

Zare Kolsaraki, Hamid (2004). Tunnelmagnetowiderstand zwischen Übergangsmetallclustern getrennt durch isolierende Moleküle. PhD thesis, Universität zu Köln.

Zittartz, Marc Alexander (2002). Anomaler Hall-Effekt in dotierten Kobaltaten. PhD thesis, Universität zu Köln.