Dr. Roland Gillen

2024

• Dierke T., Wolff S., Gillen R., Eisenkolb J., Nagel T., Maier S., Kivala M., Hauke F., Hirsch A., Maultzsch J.:
  Moiré Lattice of Twisted Bilayer Graphene as Template for Non‐Covalent Functionalization
  In: Angewandte Chemie International Edition 64 (2024)
  ISSN: 1433-7851
  DOI: 10.1002/anie.202414593
• Gillen R., Maultzsch J.:
  Family behavior and Dirac bands in armchair nanoribbons with 4-8 defect lines
  In: Journal of Physics: Condensed Matter 36 (2024), Art.Nr.: 295501
  ISSN: 0953-8984
  DOI: 10.1088/1361-648X/ad3b5a
• Liu K., Zheng W., Osella S., Qiu ZL., Böckmann S., Niu W., Meingast L., Komber H., Obermann S., Gillen R., Bonn M., Hansen MR., Maultzsch J., Wang HI., Ma J., Feng X.:
  Cove-Edged Chiral Graphene Nanoribbons with Chirality-Dependent Bandgap and Carrier Mobility
  In: Journal of the American Chemical Society 146 (2024), S. 1026-1034
  ISSN: 1520-5126
  DOI: 10.1021/jacs.3c11975
• Zhao S., Huang X., Gillen R., Li Z., Liu S., Watanabe K., Taniguchi T., Maultzsch J., Hone J., Högele A., Baimuratov AS.:
  Hybrid Moiré Excitons and Trions in Twisted MoTe2-MoSe2 Heterobilayers
  In: Nano Letters (2024)
  ISSN: 1530-6984
  DOI: 10.1021/acs.nanolett.4c00541

2023

• Kamutzki F., Bekheet MF., Selve S., Kampmann F., Siemensmeyer K., Kober D., Gillen R., Wagner M., Maultzsch J., Gurlo A., Hanaor DA.:
  NaGdSi2O6 – A novel antiferromagnetically coupled silicate with Vierer chain structure
  In: Journal of Solid State Chemistry 317 (2023), Art.Nr.: 123677
  ISSN: 0022-4596
  DOI: 10.1016/j.jssc.2022.123677
• Li LL., Gillen R., Palummo M., Milošević MV., Peeters FM.:
  Strain tunable interlayer and intralayer excitons in vertically stacked MoSe2/WSe2 heterobilayers
  In: Applied Physics Letters 123 (2023), Art.Nr.: 033102
  ISSN: 0003-6951
  DOI: 10.1063/5.0147761
• Wolff S., Gillen R., Maultzsch J.:
  Electronic Properties and Interlayer Interactions in Antimony Oxide Homo- and Heterobilayers
  In: physica status solidi (b) 260 (2023), Art.Nr.: 2300376
  ISSN: 0370-1972
  DOI: 10.1002/pssb.202300376

2022

• Janzen BM., Gillen R., Galazka Z., Maultzsch J., Wagner MR.:
  First- and second-order Raman spectroscopy of monoclinic β- Ga2 O3
  In: Physical Review Materials 6 (2022), Art.Nr.: 054601
  ISSN: 2475-9953
  DOI: 10.1103/PhysRevMaterials.6.054601
• Khestanova E., Ivanova T., Gillen R., D'Elia A., Lacey ONG., Wysocki L., Grueneis A., Kravtsov V., Strupinski W., Maultzsch J., Kandyba V., Cattelan M., Barinov A., Avila J., Dudin P., Senkovskiy BV.:
  Robustness of Momentum-Indirect Interlayer Excitons in MoS2/WSe2 Heterostructure against Charge Carrier Doping
  In: ACS Photonics (2022)
  ISSN: 2330-4022
  DOI: 10.1021/acsphotonics.2c01930
• Moses Badlyan N., Pettinger N., Enderlein N., Gillen R., Chen X., Zhang W., Knirsch K., Hirsch A., Maultzsch J.:
  Oxidation and phase transition in covalently functionalized MoS2
  In: Physical Review B 106 (2022), Art.Nr.: 104103
  ISSN: 0163-1829
  DOI: 10.1103/PhysRevB.106.104103

2021

• Chen X., Bartlam C., Lloret Segura VJ., Moses Badlyan N., Wolff S., Gillen R., Stimpel-Lindner T., Maultzsch J., Duesberg GS., Knirsch K., Hirsch A.:
  Covalent Bisfunctionalization of Two-Dimensional Molybdenum Disulfide
  In: Angewandte Chemie International Edition (2021), S. 2-11
  ISSN: 1433-7851
  DOI: 10.1002/anie.202103353
• Erkensten D., Brem S., Wagner K., Gillen R., Perea-Causin R., Ziegler JD., Taniguchi T., Watanabe K., Maultzsch J., Chernikov A., Malic E.:
  Dark exciton-exciton annihilation in monolayer WSe2
  In: Physical Review B 104 (2021)
  ISSN: 0163-1829
  DOI: 10.1103/PhysRevB.104.L241406
• Gillen R.:
  Interlayer Excitonic Spectra of Vertically Stacked MoSe2/WSe2 Heterobilayers
  In: physica status solidi (b) (2021)
  ISSN: 0370-1972
  DOI: 10.1002/pssb.202000614
• Janzen BM., Mazzolini P., Gillen R., Falkenstein A., Martin M., Tornatzky H., Maultzsch J., Bierwagen O., Wagner MR.:
  Isotopic study of Raman active phonon modes in β-Ga2O3
  In: Journal of Materials Chemistry C 9 (2021), S. 2311-2320
  ISSN: 2050-7526
  DOI: 10.1039/d0tc04101g
• Janzen BM., Mazzolini P., Gillen R., Peltason VFS., Grote LP., Maultzsch J., Fornari R., Bierwagen O., Wagner MR.:
  Comprehensive Raman study of orthorhombic kappa/epsilon-Ga2O3 and the impact of rotational domains
  In: Journal of Materials Chemistry C (2021)
  ISSN: 2050-7526
  DOI: 10.1039/d1tc03500b
• Kampmann F., Panchakarla LS., Gillen R., Tenne R., Maultzsch J.:
  Vibrational Properties and Charge Transfer in the Misfit-Layer Compound LaS-CrS2
  In: Journal of Physical Chemistry C (2021)
  ISSN: 1932-7447
  DOI: 10.1021/acs.jpcc.1c02187
• Merkl P., Mooshammer F., Brem S., Girnghuber A., Lin KQ., Weigl L., Yong CK., Gillen R., Maultzsch J., Lupton JM., Malic E., Huber R.:
  Tailoring Coulomb correlations in twisted WSe2bilayers
  2021 Conference on Lasers and Electro-Optics, CLEO 2021 (Online, 9. Mai 2021 - 14. Mai 2021)
  In: 2021 Conference on Lasers and Electro-Optics, CLEO 2021 - Proceedings 2021
• Mooshammer F., Merkl P., Ovesen S., Brem S., Girnghuber A., Lin KQ., Liebich M., Yong CK., Gillen R., Maultzsch J., Lupton JM., Malic E., Huber R.:
  Twist-Tailoring Hybrid Excitons in Van der Waals Homobilayers
  2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 (München, 21. Juni 2021 - 25. Juni 2021)
  In: 2021 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2021 2021
  DOI: 10.1109/CLEO/Europe-EQEC52157.2021.9542072

2020

• Assebban M., Gibaja C., Fickert M., Torres I., Weinreich E., Wolff S., Gillen R., Maultzsch J., Varela M., Rong STJ., Loh KP., Michel EG., Zamora F., Abellan G.:
  Unveiling the oxidation behavior of liquid-phase exfoliated antimony nanosheets
  In: 2D Materials 7 (2020), Art.Nr.: 025039
  ISSN: 2053-1583
  DOI: 10.1088/2053-1583/ab755e
• Brem S., Lin KQ., Gillen R., Bauer JM., Maultzsch J., Lupton JM., Malic E.:
  Hybridized intervalley moiré excitons and flat bands in twisted WSe2 bilayers
  In: Nanoscale 12 (2020), S. 11088-11094
  ISSN: 2040-3364
  DOI: 10.1039/d0nr02160a
• Karni O., Barré E., Lau SC., Gillen R., Ma EY., Gal L., Yaffe T., Kim B., Watanabe K., Taniguchi T., Orenstein M., Maultzsch J., Barmak K., Page RH., Heinz TF.:
  Tunable infrared light emission from MoS2/WSe2 heterostructures
  CLEO: Science and Innovations, CLEO_SI 2020 (Washington, DC, 10. Mai 2020 - 15. Mai 2020)
  In: Optics InfoBase Conference Papers 2020
  DOI: 10.1364/CLEO_SI.2020.SM1Q.1
• Merkl P., Mooshammer F., Brem S., Girnghuber A., Lin KQ., Weigl L., Liebich M., Yong CK., Gillen R., Maultzsch J., Lupton JM., Malic E., Huber R.:
  Twist-tailoring Coulomb correlations in van der Waals homobilayers
  In: Nature Communications 11 (2020), Art.Nr.: 2167
  ISSN: 2041-1723
  DOI: 10.1038/s41467-020-16069-z
• Mooshammer F., Merkl P., Ovesen S., Brem S., Girnghuber A., Lin KQ., Liebich M., Yong CK., Gillen R., Maultzsch J., Lupton JM., Malic E., Huber R.:
  Excitons in twisted van der Waals bilayers: Internal structure and ultrafast dynamics
  45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
  In: 2020 45TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ), NEW YORK: 2020
  DOI: 10.1109/IRMMW-THZ46771.2020.9370984
• Tyborski C., Hückstaedt T., Gillen R., Otto T., Fokina NA., Fokin AA., Schreiner PR., Maultzsch J.:
  Vibrational signatures of diamondoid dimers with large intramolecular London dispersion interactions
  In: Carbon 157 (2020), S. 201-207
  ISSN: 0008-6223
  DOI: 10.1016/j.carbon.2019.10.014
• Wolff S., Gillen R., Assebban M., Abellan Saez G., Maultzsch J.:
  Two-Dimensional Antimony Oxide
  In: Physical Review Letters 124 (2020), S. 126101
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.124.126101

2019

• Karni O., Barré E., Lau SC., Gillen R., Ma EY., Kim B., Watanabe K., Taniguchi T., Maultzsch J., Barmak K., Page RH., Heinz TF.:
  Infrared Interlayer Exciton Emission in MoS2/WSe2 Heterostructures
  In: Physical Review Letters 123 (2019), Art.Nr.: 247402
  ISSN: 0031-9007
  DOI: 10.1103/PhysRevLett.123.247402
• Tornatzky H., Gillen R., Uchiyama H., Maultzsch J.:
  Phonon dispersion of MoS2
  In: Physical Review B 99 (2019), S. 144309
  ISSN: 2469-9950
  DOI: 10.1103/PhysRevB.99.144309
  URL: https://arxiv.org/abs/1809.03381

2018

• Gillen R., Maultzsch J.:
  Interlayer excitons in MoSe2/WSe2 heterostructures from first principles
  In: Physical Review B 97 (2018)
  ISSN: 2469-9950
  DOI: 10.1103/PhysRevB.97.165306
• Li H., Xu X., Zhang Y., Gillen R., Shi L., Robertson J.:
  Native point defects of semiconducting layered Bi2O2Se
  In: Scientific Reports 8 (2018), Art.Nr.: 10920
  ISSN: 2045-2322
  DOI: 10.1038/s41598-018-29385-8

2017

• Abellan G., Wild S., Lloret V., Scheuschner N., Gillen R., Mundloch U., Maultzsch J., Varela M., Hauke F., Hirsch A.:
  Fundamental Insights into the Degradation and Stabilization of Thin Layer Black Phosphorus
  In: Journal of the American Chemical Society 139 (2017), S. 10432-10440
  ISSN: 0002-7863
  DOI: 10.1021/jacs.7b04971
• Gillen R., Maultzsch J.:
  Light-Matter Interactions in Two-Dimensional Transition Metal Dichalcogenides: Dominant Excitonic Transitions in Mono- and Few-Layer MoX2 and Band Nesting
  In: IEEE Journal of Selected Topics in Quantum Electronics 23 (2017)
  ISSN: 1077-260X
  DOI: 10.1109/JSTQE.2016.2604359
• Tyborski C., Gillen R., Fokin AA., Koso TV., Fokina NA., Hausmann H., Rodionov VN., Schreiner PR., Thomsen C., Maultzsch J.:
  Electronic and Vibrational Properties of Diamondoid Oligomers
  In: Journal of Physical Chemistry C 121 (2017), S. 27082-27088
  ISSN: 1932-7447
  DOI: 10.1021/acs.jpcc.7b07666
  URL: http://pubs.acs.org/doi/10.1021/acs.jpcc.7b07666
• Tyborski C., Meinke R., Gillen R., Bischoff T., Knecht A., Richter R., Merli A., Fokin AA., Koso TV., Rodionov VN., Schreiner PR., Moeller T., Rander T., Thomsen C., Maultzsch J.:
  From isolated diamondoids to a van-der-Waals crystal: A theoretical and experimental analysis of a trishomocubane and a diamantane dimer in the gas and solid phase
  In: Journal of Chemical Physics 147 (2017), Art.Nr.: 044303
  ISSN: 0021-9606
  DOI: 10.1063/1.4994898

2016

• Khachadorian S., Gillen R., Thon-Tat C., Zhu LC., Maultzsch J., Phillips MR., Hoffmann A.:
  Revealing the origin of high-energy Raman local mode in nitrogen doped ZnO nanowires
  In: Physica Status Solidi-Rapid Research Letters 10 (2016), S. 334-338
  ISSN: 1862-6254
  DOI: 10.1002/pssr.201510405
• Li H., Gillen R., Robertson J.:
  The screening effects of the screened exchange hybrid functional in surface systems: A case study on the CO/Pt(111) problem
  In: AIP Advances 6 (2016), Art.Nr.: 065309
  ISSN: 2158-3226
  DOI: 10.1063/1.4954032
• Staiger M., Bacic V., Gillen R., Radovsky G., Gartsmann K., Tenne R., Heine T., Maultzsch J., Thomsen C.:
  Raman spectroscopy of intercalated and misfit layer nanotubes
  In: Physical Review B 94 (2016)
  ISSN: 2469-9950
  DOI: 10.1103/PhysRevB.94.035430

2015

• Khachadorian S., Gillen R., Choi S., Thon-Tat C., Kliem A., Maultzsch J., Phillips MR., Hoffmann A.:
  Effects of annealing on optical and structural properties of zinc oxide nanocrystals
  In: physica status solidi (b) 252 (2015), S. 2620-2625
  ISSN: 0370-1972
  DOI: 10.1002/pssb.201552453
• Scheuschner N., Gillen R., Staiger M., Maultzsch J.:
  Interlayer resonant Raman modes in few-layer MoS2
  In: Physical Review B 91 (2015)
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.91.235409
• Staiger M., Gillen R., Scheuschner N., Ochedowski O., Kampmann F., Schleberger M., Thomsen C., Maultzsch J.:
  Splitting of monolayer out-of-plane A '(1) Raman mode in few-layer WS2
  In: Physical Review B 91 (2015)
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.91.195419
• Tyborski C., Herziger F., Gillen R., Maultzsch J.:
  Beyond double-resonant Raman scattering: Ultraviolet Raman spectroscopy on graphene, graphite, and carbon nanotubes
  In: Physical Review B 92 (2015)
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.92.041401

2014

• Gillen R., Huang B., Robertson J.:
  Study of CeO2 and its native defects by density functional theory with repulsive potential
  In: Journal of Physical Chemistry C 118 (2014), S. 24248-24256
  ISSN: 1932-7447
  DOI: 10.1021/jp506625h
• Gillen R., Robertson J., Maultzsch J.:
  Electronic properties of MoS2/h-BN heterostructures: Impact of dopants and impurities
  In: physica status solidi (b) 251 (2014), S. 2620-2625
  ISSN: 0370-1972
  DOI: 10.1002/pssb.201451424
• Gillen R., Robertson J., Maultzsch J.:
  Indirect doping effects from impurities in MoS2/h-BN heterostructures
  In: Physical Review B 90 (2014)
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.90.075437
• Scheuschner N., Ochedowski O., Kaulitz AM., Gillen R., Schleberger M., Maultzsch J.:
  Photoluminescence of freestanding single- and few-layer MoS 2
  In: Physical Review B - Condensed Matter and Materials Physics 89 (2014), Art.Nr.: 125406
  ISSN: 1550-235X
  DOI: 10.1103/PhysRevB.89.125406

2013

• Gillen R., Clark S., Robertson J.:
  Nature of the electronic band gap in lanthanide oxides
  In: Physical Review B - Condensed Matter and Materials Physics 87 (2013), Art.Nr.: 125116
  ISSN: 1550-235X
  DOI: 10.1103/PhysRevB.87.125116
• Gillen R., Robertson J.:
  Accurate screened exchange band structures for the transition metal monoxides MnO, FeO, CoO and NiO
  In: Journal of Physics: Condensed Matter 25 (2013), Art.Nr.: 165502
  ISSN: 0953-8984
  DOI: 10.1088/0953-8984/25/16/165502
• Gillen R., Robertson J.:
  A hybrid density functional view of native vacancies in gallium nitride
  In: Journal of Physics: Condensed Matter 25 (2013), Art.Nr.: 405501
  ISSN: 0953-8984
  DOI: 10.1088/0953-8984/25/40/405501
• Gillen R., Robertson J.:
  Electronic structure of lanthanide oxide high K gate oxides
  In: Microelectronic Engineering 109 (2013), S. 72-74
  ISSN: 0167-9317
  DOI: 10.1016/j.mee.2013.03.011
• Lin L., Guo Y., Gillen R., Robertson J.:
  Chemical trends of defects at HfO2:GaAs and Al2O 3:GaAs/InAs/InP/GaSb interfaces
  In: Journal of Applied Physics 113 (2013), Art.Nr.: 134103
  ISSN: 0021-8979
  DOI: 10.1063/1.4799364
• Robertson J., Esconjauregui S., Xie R., Guo Y., Pfaendler S., Fouquet M., Gillen R., Cepek C., Castellarin-Cudia C., Eslava S.:
  Electrical conduction of carbon nanotube forests through sub-nanometric films of alumina
  In: Applied Physics Letters 102 (2013), Art.Nr.: 113109
  ISSN: 0003-6951
  DOI: 10.1063/1.4798261
• Robertson J., Gillen R.:
  Defect densities inside the conductive filament of RRAMs
  In: Microelectronic Engineering 109 (2013), S. 208-210
  ISSN: 0167-9317
  DOI: 10.1016/j.mee.2013.03.010

2012

• Gillen R., Robertson J.:
  Hybrid functional calculations of the Al impurity in α quartz: Hole localization and electron paramagnetic resonance parameters
  In: Physical Review B - Condensed Matter and Materials Physics 85 (2012), Art.Nr.: 014117
  ISSN: 1550-235X
  DOI: 10.1103/PhysRevB.85.014117
• Gillen R., Robertson J., Clark S.:
  Electron spin resonance signature of the oxygen vacancy in HfO 2
  In: Applied Physics Letters 101 (2012), Art.Nr.: 102904
  ISSN: 0003-6951
  DOI: 10.1063/1.4751110
• Robertson J., Gillen R., Clark S.:
  Advances in understanding of transparent conducting oxides
  In: Thin Solid Films 520 (2012), S. 3714-3720
  ISSN: 0040-6090
  DOI: 10.1016/j.tsf.2011.10.063

2011

• Gillen R., Robertson J.:
  Band structure calculations of CuAlO2, CuGaO2, CuInO2, and CuCrO2 by screened exchange
  In: Physical Review B - Condensed Matter and Materials Physics 84 (2011), Art.Nr.: 035125
  ISSN: 1550-235X
  DOI: 10.1103/PhysRevB.84.035125

2010

• Gillen R., Mohr M., Maultzsch J.:
  Raman‐active modes in graphene nanoribbons
  In: physica status solidi (b) 247 (2010), S. 2941-2944
  ISSN: 0370-1972
• Gillen R., Mohr M., Maultzsch J.:
  Symmetry properties of vibrational modes in graphene nanoribbons
  In: Physical Review B 81 (2010)
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.81.205426
• Gillen R., Robertson J.:
  Density functional theory screened-exchange approach for investigating electronical properties of graphene-related materials
  In: physica status solidi (b) 82 (2010), Art.Nr.: 125406
  ISSN: 0370-1972
  DOI: 10.1103/PhysRevB.82.125406
• Gillen R., Robertson J.:
  The screened-exchange approximation as alternative method for DFT calculations on graphene structures
  In: Physical Review B - Condensed Matter and Materials Physics 247 (2010), S. 2945-2948
  ISSN: 1550-235X
  DOI: 10.1002/pssb.201000136

2009

• Gillen R., Mohr M., Maultzsch J., Thomsen C.:
  Lattice vibrations in graphene nanoribbons from density functional theory
  In: physica status solidi (b) 246 (2009), S. 2577-2580
  ISSN: 0370-1972
  DOI: 10.1002/pssb.200982343
• Gillen R., Mohr M., Thomsen C., Maultzsch J.:
  Vibrational properties of graphene nanoribbons by first-principles calculations
  In: Physical Review B 80 (2009)
  ISSN: 1098-0121
  DOI: 10.1103/PhysRevB.80.155418