@article{61338,
  abstract     = {{Conductive ferroelectric domain walls (DWs) represent a promising topical system for the development of nanoelectronic components and device sensors to be operational at elevated temperatures. DWs show very different properties as compared to their hosting bulk crystal, in particular with respect to the high local electrical conductivity. The objective of this work is to demonstrate DW conductivity up to temperatures as high as 400 °C which extends previous studies significantly. Experimental investigation of the DW conductivity of charged, inclined DWs is performed using 5 mol % MgO-doped lithium niobate single crystals. Current–voltage (  ) curves are determined by DC electrometer measurements and impedance spectroscopy and found to be identical. Moreover, impedance spectroscopy enables to recognize artifacts such as damaged electrodes. Temperature dependent measurements over repeated heating cycles reveal two distinct thermal activation energies for a given DW, with the higher of the activation energies only measured at higher temperatures. Depending on the specific sample, the higher activation energy is found above 160 °C to 230 °C. This suggests, in turn, that more than one type of defect/polaron is involved, and that the dominant transport mechanism changes with increasing temperature. First principles atomistic modeling suggests that the conductivity of inclined domain walls cannot be solely explained by the formation of a 2D carrier gas and must be supported by hopping processes. This holds true even at temperatures as high as 400 °C. Our investigations underline the potential to extend DW current based nanoelectronic and sensor applications even into the so-far unexplored temperature range up to 400 °C.}},
  author       = {{Wulfmeier, Hendrik and Yakhnevych, Uliana and Boekhoff, Cornelius and Diima, Allan and Kunzner, Marlo and Verhoff, Leonard M. and Paul, Jonas and Ratzenberger, Julius and Beyreuther, Elke and Gössel, Joshua and Kiseleva, Iuliia and Rüsing, Michael and Sanna, Simone and Eng, Lukas M. and Fritze, Holger}},
  issn         = {{0167-2738}},
  journal      = {{Solid State Ionics}},
  publisher    = {{Elsevier BV}},
  title        = {{{Demonstration of domain wall current in MgO-doped lithium niobate single crystals up to 400°C}}},
  doi          = {{10.1016/j.ssi.2025.116949}},
  volume       = {{429}},
  year         = {{2025}},
}

@article{61337,
  abstract     = {{<jats:p>Lithium niobate–tantalate mixed (LNT) crystals promise improved performance and new applications for optical, piezomechanical, or electrical devices when compared to the end composition compounds lithium niobate and lithium tantalate. The macroscopic properties of ferroelectrics highly depend on the structure of the underlying ferroelectric domains, which within mixed crystals can interact with the local changes in chemical compositions. In this work, we demonstrate how ferroelectric domain walls can unambiguously be identified and distinguished from local changes in composition by correlating piezoresponse force microscopy with second harmonic generation microscopy, using the Cherenkov contrast, reference crystal contrast, and negative phase mismatching contrast. We demonstrate how measuring the associated intensity change when approaching negative phase mismatching can be used to deduce the local tantalum concentration fast and over a large sample area. Based on these results, we study the natural domain structures that appear from Czochralski-grown, multi-domain LNT solid solution crystals. The developed results and methods serve as the central foundation to poling these mixed crystal systems and are key for their integration and applications.</jats:p>}},
  author       = {{Koppitz, Boris and Saxena, Tanya and Bernhardt, Felix and Ganschow, Steffen and Sanna, Simone and Rüsing, Michael and Eng, Lukas M.}},
  issn         = {{0021-8979}},
  journal      = {{Journal of Applied Physics}},
  number       = {{3}},
  publisher    = {{AIP Publishing}},
  title        = {{{Second harmonic generation contrasts of ferroelectric domain structures and composition in lithium niobate–tantalate mixed crystals}}},
  doi          = {{10.1063/5.0276183}},
  volume       = {{138}},
  year         = {{2025}},
}

@techreport{61332,
  author       = {{Buhl, Heike M. and Fisher, Josephine Beryl and Rohlfing, Katharina J.}},
  publisher    = {{OSF}},
  title        = {{{Role Perception Questionnaire: Co-construction. Scales manual}}},
  year         = {{2025}},
}

@inproceedings{61341,
  author       = {{Beimdiek, Janis and Schmid, Hans-Joachim}},
  location     = {{Paderborn}},
  title        = {{{SFS-gestützte Synthese von Katalysatorpartikeln zur selektiven katalytischen Reduktion von NOx}}},
  year         = {{2025}},
}

@inproceedings{61343,
  author       = {{Beimdiek, Janis and Schmid, Hans-Joachim}},
  location     = {{Nürnberg}},
  title        = {{{Influence of surface impurities on the catalytic activity of nanoparticles synthesized by a spray flame synthesis (oral presentation)}}},
  year         = {{2025}},
}

@inproceedings{59566,
  author       = {{Beimdiek, Janis and Schmid, Hans-Joachim}},
  location     = {{Clausthal-Zellerfeld}},
  title        = {{{Selektive katalytische Reduktion von NOx an gasphasensynthetisierten Katalysatorpartikeln (Vortrag)}}},
  year         = {{2025}},
}

@article{61351,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>The interaction of water molecules with semiconductor surfaces is relevant to various optoelectronic phenomena and physicochemical processes. Despite advances in fundamental understanding of water‐exposed surfaces, the detailed time‐ and energy‐resolved behavior of excited electrons remains largely unexplored. Here, the effects of water exposure on the near‐surface electron dynamics of phosphorus‐terminated p(2×2)/c(4×2)‐reconstructed indium phosphide (100) (P‐rich InP) are studied experimentally and matched to theoretical calculations. The P‐rich InP surface, consisting of H‐passivated P‐dimers, serves as a model for other P‐containing III‐V semiconductors such as gallium phosphide (GaP) or aluminum indium phosphide (AlInP). Electron dynamics near the surface are probed with femtosecond resolution using time‐resolved two‐photon photoemission (tr‐2PPE), a pump‐probe spectroscopic technique. Pulsed water exposure preserves electronic states and significantly increases lifetimes at the conduction band minimum (CBM). Density‐functional theory (DFT) calculations attribute these findings to suppression of surface vibrational modes in the top P‐layer by water exposure, reducing electronic transition probabilities of near‐band‐gap surface states. The results suggest that many near‐surface state lifetimes reported in ultra‐high vacuum may change significantly upon electrolyte exposure. These states may thus contribute more strongly to surface reactions than traditionally assumed. Demonstrating this effect for the technologically relevant P‐rich InP surface opens new opportunities in this underexplored area of surface electrochemistry.</jats:p>}},
  author       = {{Diederich, Jonathan and Paszuk, Agnieszka and Ruiz Alvarado, Isaac Azahel and Krenz, Marvin and Zare Pour, Mohammad Amin and Babu, Diwakar Suresh and Velazquez Rojas, Jennifer and Höhn, Christian and Gao, Yuying and Schwarzburg, Klaus and Ostheimer, David and Eichberger, Rainer and Schmidt, Wolf Gero and Hannappel, Thomas and de Krol, Roel van and Friedrich, Dennis}},
  issn         = {{2196-7350}},
  journal      = {{Advanced Materials Interfaces}},
  number       = {{16}},
  publisher    = {{Wiley}},
  title        = {{{Ultrafast Electron Dynamics at the Water‐Modified InP(100) Surface}}},
  doi          = {{10.1002/admi.202500463}},
  volume       = {{12}},
  year         = {{2025}},
}

@misc{61346,
  author       = {{El Gabbouhi, Abderazzak and Massopo, Orlando and Jesinghausen, Steffen and Schmid, Hans-Joachim}},
  title        = {{{Untersuchung des Einflusses der Zusammensetzung von Lösungsmitteln und Gasen bei der Herstellung nanoskaliger Eisenoxide mittels Sprühflammensynthese}}},
  year         = {{2025}},
}

@article{61356,
  abstract     = {{<jats:p>First-principles calculations reveal how topological defects in semiconducting carbon nanotubes trap triplet excitons and enable single-photon emission at telecom wavelengths, offering new insights into their potential for photonic devices.</jats:p>}},
  author       = {{Biktagirov, Timur and Gerstmann, Uwe and Schmidt, Wolf Gero}},
  issn         = {{2040-3364}},
  journal      = {{Nanoscale}},
  number       = {{11}},
  pages        = {{6884--6891}},
  publisher    = {{Royal Society of Chemistry (RSC)}},
  title        = {{{Topological defects in semiconducting carbon nanotubes as triplet exciton traps and single-photon emitters}}},
  doi          = {{10.1039/d4nr03904a}},
  volume       = {{17}},
  year         = {{2025}},
}

@inproceedings{61368,
  author       = {{Stumpe, Miriam and Speckenmeyer, Philipp and Schryen, Guido and Kleinjohann, Lisa and Weskamp, Christoph}},
  booktitle    = {{Proceedings of the Thirty-first Americas Conference on Information Systems (AMCIS 2025)}},
  title        = {{{Planning a Swarm-Based Mobility System with Autonomous Vehicles for Sustainable and Flexible Transportation in Rural Areas}}},
  year         = {{2025}},
}

@inproceedings{61370,
  author       = {{Göbel, J. and Betke, H. and Boldt, J. and Tran, M. L. and Schryen, Guido}},
  booktitle    = {{Proceedings of the Thirty-first Americas Conference on Information Systems (AMCIS 2025)}},
  title        = {{{The Impact of Chatbot Familiarity and Frequency of Use on Human-Likeness}}},
  year         = {{2025}},
}

@article{58519,
  abstract     = {{<jats:p>A unified theoretical approach to describe the properties of multimode squeezed light generated in a lossy medium is presented. This approach is valid for Markovian environments and includes both a model of discrete losses based on the beamsplitter approach and a generalized continuous loss model based on the spatial Langevin equation. For an important class of Gaussian states, we derive master equations for the second-order correlation functions and illustrate their solution for both frequency-independent and frequency-dependent losses. Studying the mode structure, we demonstrate that in a lossy environment no broadband basis without quadrature correlations between the different broadband modes exists. Therefore, various techniques and strategies to introduce broadband modes can be considered. We show that the Mercer expansion and the Williamson-Euler decomposition do not provide modes in which the maximal squeezing contained in the system can be measured. In turn, we find a new broadband basis that maximizes squeezing in the lossy system and present an algorithm to construct it.</jats:p>}},
  author       = {{Kopylov, Denis A. and Meier, Torsten and Sharapova, Polina R.}},
  issn         = {{2521-327X}},
  journal      = {{Quantum}},
  publisher    = {{Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften}},
  title        = {{{Theory of Multimode Squeezed Light Generation in Lossy Media}}},
  doi          = {{10.22331/q-2025-02-04-1621}},
  volume       = {{9}},
  year         = {{2025}},
}

@article{61377,
  author       = {{Schneider, Martin and Hemsen, Paul and Kundisch, Dennis}},
  journal      = {{management revue - Socio-Economic Studies, Special Issue “Digital Transformation of Work”.}},
  publisher    = {{Nomos Verlag}},
  title        = {{{Who are the Actively Participating Crowdworkers? A Qualitative Comparative Analysis of a German Text Creation PlatformSocio-Economic Studies, }}},
  year         = {{2025}},
}

@inproceedings{61381,
  author       = {{Grieger, Nicole and Okumus, Hasan and Burdorf, Sven and Kundisch, Dennis}},
  booktitle    = {{Proceedings of the MCIS 2025}},
  title        = {{{Traffic Scenario Detection – A Comparison of CNN-RNN and Transformer-based Architectures in the Context of Autonomous Driving}}},
  year         = {{2025}},
}

@inproceedings{61380,
  author       = {{Althaus, Maike}},
  booktitle    = {{Proceedings of the MCIS 2025}},
  title        = {{{Tech, Trash and Theft – Exploring the Impact of Food Waste Apps on Local Shoplifting in Grocery Stores and Supermarkets}}},
  year         = {{2025}},
}

@inbook{60215,
  author       = {{Ballweg, Sandra}},
  booktitle    = {{Erträge des JGG-Seminars für Deutsch als Fremdsprache Leistungsbeurteilung und Schreibprodukte}},
  editor       = {{Japanische Gesellschaft für Germanistik unter der Leitung von Olga Czyzak, Elvira Bachmaier, Carsten Waychert und Nancy Yanagita, /}},
  pages        = {{72--96}},
  publisher    = {{IUDICIUM}},
  title        = {{{KI-gestützter Umgang mit Textprodukten im prozessorientierten DaF-Unterricht. }}},
  year         = {{2025}},
}

@inbook{60214,
  author       = {{Ballweg, Sandra}},
  booktitle    = {{Fremdsprachenlehren und -lernen zim Spannungsfeld von digital und analog}},
  editor       = {{Bürgel, Christoph and Innal, Benjamin}},
  pages        = {{153--177}},
  publisher    = {{Narr}},
  title        = {{{"man hat sich halt online getroffen". Zur Aushandlung räumlicher Praktiken in virtuellen Austauschbegegnungen.}}},
  year         = {{2025}},
}

@inbook{61394,
  author       = {{Satzinger, Nicole and Fögen, Yvonne and Noetzel, Ida and Kehne, Miriam}},
  booktitle    = {{Handbuch Bewegung und Sport in der Sozialen Arbeit}},
  editor       = {{Matzner, Michael and Wojciechowski, Torsten}},
  pages        = {{507--512}},
  publisher    = {{Beltz Juventa}},
  title        = {{{"FiBSS - Fortschritt in und durch Bewegung, Spiel und Sport im Grundschulganztag" - eine Qualifizierung für das pädagogische Personal im Ganztag}}},
  year         = {{2025}},
}

@inbook{61393,
  author       = {{Kehne, Miriam and Fögen, Yvonne and Satzinger, Nicole and Noetzel, Ida}},
  booktitle    = {{Handbuch Bewegung und Sport in der Sozialen Arbeit}},
  editor       = {{Matzner, Michael and Wojciechowski, Torsten }},
  pages        = {{261--272}},
  publisher    = {{Beltz Juventa}},
  title        = {{{Bewegung und Sport in der Ganztagsschule}}},
  year         = {{2025}},
}

@article{58863,
  abstract     = {{Als Rilke im Frühjahr 1911 eine zuvor begonnene Afrika-Reise mit einem Nildampfer von Thomas Cook
in Ägypten fortsetzt, wird ihm schnell klar, dass das Tempo des Massentourismus in Konflikt mit seinen
Sehbedürfnissen kommt. Der touristische Blick entsteht in zeitlicher und gedanklicher Nähe zum Kolonialismus
und führt eine Form eurozentrisch-hegemonialer Weltbeherrschung vor ‒ wobei der Tourist
als Typus auch im Inland schon im 19. Jahrhundert dem Reisenden als Negativfigur entgegengestellt
wird. Entgegen gegenwärtiger Werbestrategien ist auch der Kulturtourismus von seinen Anfängen her
nicht frei von Elementen des Massentourismus und eines die Fremde beherrschenden Blicks. Dass eine
immer schon vorgeprägte Erwartungshaltung die erwartete Erschütterung erschwert, wird Rilke auf seiner
Reise deutlich, die er nicht zuletzt durch die Ägypten-Reise seiner Frau vorbereitet hat. So versucht
er den Ambivalenzen des industrialisierten Kulturtourismus zu entkommen und empfindet am Ende
doch nur die strukturelle Untragbarkeit der touristischen Situation, die schon vor der Reise durch die
Hoffnung auf authentisches Erleben hoffnungslos kontaminiert ist.}},
  author       = {{Schulte Eickholt, Swen}},
  issn         = {{2943-3010}},
  journal      = {{diMaG }},
  publisher    = {{INDIGO}},
  title        = {{{Das Gesicht des Weltalls anschauen. Rilkes Ägypten-Reise und der Kulturtourismus}}},
  doi          = {{10.17619/UNIPB/1-2182}},
  volume       = {{2}},
  year         = {{2025}},
}