Jooß, Christian

[["dc.bibliographiccitation.firstpage","323"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","The European Physical Journal. B, Condensed Matter and Complex Systems"],["dc.bibliographiccitation.lastpage","331"],["dc.bibliographiccitation.volume","53"],["dc.contributor.author","Westhäuser, W."],["dc.contributor.author","Schramm, S."],["dc.contributor.author","Hoffmann, J."],["dc.contributor.author","Jooss, C."],["dc.date.accessioned","2022-01-27T10:34:04Z"],["dc.date.available","2022-01-27T10:34:04Z"],["dc.date.issued","2006"],["dc.identifier.doi","10.1140/epjb/e2006-00387-2"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/98695"],["dc.relation.issn","1434-6028"],["dc.relation.issn","1434-6036"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Comparative study of magnetic and electric field induced insulator-metal-transitions in Pr1-xCaxMnO3 films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","140508"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","64"],["dc.contributor.author","Guth, K."],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.contributor.author","Freyhardt, Herbert C."],["dc.contributor.author","Jooss, C."],["dc.date.accessioned","2018-11-07T08:37:09Z"],["dc.date.available","2018-11-07T08:37:09Z"],["dc.date.issued","2001"],["dc.description.abstract","The limiting factor for current transport in high-T-c superconductors including grain boundaries is the intergranular critical current density. There have been various attempts to enhance the transport properties of multicrystalline high-T-c superconductors and to understand the mechanisms leading to a reduction of the critical currents over grain boundaries (GB's). We have extensively studied the effects of Ca doping on textured thin films, establishing only a rather small overdoping of the bulk samples. Nevertheless, doping the YBa2Cu3Odelta films with 20% Ca, symmetrical [001] tilt GB's with misorientation angle theta =4 degrees and 8 degrees showed strong benefits to Ca additions. We found an increase in the critical current density [J(gb)(theta)] up to 40% and 100% for the 4 degrees and 8 degrees GB's, respectively. Considering a model of Gurevich and Pashitskii for current transport in low-angle GB's, the improvements can be attached to a reduction of the strain fields epsilon and the localized charges Q, leading to a reduced built-in potential \\V-bi\\ in the dislocation cores."],["dc.identifier.doi","10.1103/PhysRevB.64.140508"],["dc.identifier.isi","000171530000018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18464"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","1550-235X"],["dc.relation.issn","1098-0121"],["dc.title","Modification of transport properties in low-angle grain boundaries via calcium doping of YBa2Cu3O delta thin films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2487"],["dc.bibliographiccitation.journal","PHYSICA C"],["dc.bibliographiccitation.lastpage","2488"],["dc.bibliographiccitation.volume","341"],["dc.contributor.author","Vostner, A."],["dc.contributor.author","Weber, H. W."],["dc.contributor.author","Mathen, A."],["dc.contributor.author","Jooss, C."],["dc.contributor.author","Hoffmann, J."],["dc.contributor.author","Freyhardt, Herbert C."],["dc.date.accessioned","2018-11-07T08:47:03Z"],["dc.date.available","2018-11-07T08:47:03Z"],["dc.date.issued","2000"],["dc.description.abstract","Results on the field and temperature dependence of the: critical transport current density in YBa2Cu3O7-delta coated conductors of various thickness are presented. The conductors were deposited by liquid phase epitaxy on RE-123 buffer layers on MgO substrates. The analysis of the remanent fields in magnetization loops with different maximum external field provides information about the inter- and intragrain current distribution. From the reverse leg of the magnetization loops the average grain size in the YBCO layer can be estimated. The results of these magnetic measurements are compared to those obtained from magneto-optical imaging. Modifications of the defect structure by neutron irradiation are reported as well. The resulting defects are either collision cascades, originating from fast neutrons (E > 0.1 MeV), or point defects, originating from neutrons with lower energies. Their influence on J(c) will be discussed."],["dc.identifier.doi","10.1016/S0921-4534(00)01277-6"],["dc.identifier.isi","000165856000169"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20851"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI"],["dc.relation.eventlocation","HOUSTON, TEXAS"],["dc.relation.issn","0921-4534"],["dc.title","Characterization of YBCO coated conductors deposited by LPE on MgO substrates"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","S0304399121001054"],["dc.bibliographiccitation.firstpage","113320"],["dc.bibliographiccitation.journal","Ultramicroscopy"],["dc.bibliographiccitation.volume","228"],["dc.contributor.author","Meyer, Tobias"],["dc.contributor.author","Westphal, Tobias"],["dc.contributor.author","Kressdorf, Birte"],["dc.contributor.author","Ross, Ulrich"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Seibt, Michael"],["dc.date.accessioned","2021-07-05T15:00:26Z"],["dc.date.available","2021-07-05T15:00:26Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1016/j.ultramic.2021.113320"],["dc.identifier.pii","S0304399121001054"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/87825"],["dc.language.iso","en"],["dc.notes.intern","DOI Import DOI-Import GROB-441"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B02 Photonen-getriebener Energietransfer über Grenzflächen zwischen Materialien mit starken Korrelationen"],["dc.relation","SFB 1073 | Topical Area Z | Z02 Hochauflösende Charakterisierung von Grenzflächen"],["dc.relation.issn","0304-3991"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Site-specific plan-view TEM lamella preparation of pristine surfaces with a large field of view"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4516"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","Green Chemistry"],["dc.bibliographiccitation.lastpage","4522"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Zhang, Yu"],["dc.contributor.author","Hatami, Nareh"],["dc.contributor.author","Lange, Niklas Simon"],["dc.contributor.author","Ronge, Emanuel"],["dc.contributor.author","Schilling, Waldemar"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Das, Shoubhik"],["dc.date.accessioned","2021-04-14T08:24:23Z"],["dc.date.available","2021-04-14T08:24:23Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1039/d0gc01187h"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/81272"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C01 Hydrid-Anordnungen für die Untersuchung photo-induzierter mehrstufiger katalytischer Prozesse"],["dc.relation.eissn","1463-9270"],["dc.relation.issn","1463-9262"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","A metal-free heterogeneous photocatalyst for the selective oxidative cleavage of CC bonds in aryl olefins via harvesting direct solar energy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","174210"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","76"],["dc.contributor.author","Wu, L."],["dc.contributor.author","Klie, R. F."],["dc.contributor.author","Zhu, Y."],["dc.contributor.author","Jooss, Ch."],["dc.date.accessioned","2018-11-07T10:57:29Z"],["dc.date.available","2018-11-07T10:57:29Z"],["dc.date.issued","2007"],["dc.description.abstract","Pr(1-x)Ca(x)MnO(3) in the doping range between 0.3 < x < 0.5 represent an extremely interesting manganite system for the study of the interplay of different kinds of ordering (charge, orbital, lattice, and spin). While there is consensus that a charge- and orbital-ordered state develops below a transition temperature T(co)approximate to 230 K, recent controversial structural refinements resulting from neutron and x-ray diffraction studies challenged our understanding of the particular type of charge ordering (CO) and orbital ordering (OO), and consequently, the underlying mechanism of the colossal resistance effects. Here, we present a detailed high-resolution transmission electron microscopy and electron-diffraction study that, based on extinction rules, resolves the current controversy and confirms the existence of the Zener-polaron (ZP)-type CO and/or OO in Pr(1-x)Ca(x)MnO(3). The ZP-type ordering is further verified by atomic-column-resolved electron energy-loss spectroscopy revealing strong charge ordering of the in-plane oxygen-Mn bonds, while valence disproportionation at the Mn sites is less than expected. Over wide doping and temperature ranges, we observed structural phase coexistence between the ZP-CO/OO P2(1)nm and the disordered Pbnm structure."],["dc.identifier.doi","10.1103/PhysRevB.76.174210"],["dc.identifier.isi","000251326600055"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50263"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","1098-0121"],["dc.title","Experimental confirmation of Zener-polaron-type charge and orbital ordering in Pr(1-x)Ca(x)MnO(3)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","195116"],["dc.bibliographiccitation.issue","19"],["dc.bibliographiccitation.journal","Physical Review. B"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Jansen, David"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Heidrich-Meisner, Fabian"],["dc.date.accessioned","2021-12-01T09:21:08Z"],["dc.date.available","2021-12-01T09:21:08Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1103/PhysRevB.104.195116"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94353"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B: Umwandlung von optischen Schwingungen"],["dc.relation","SFB 1073 | Topical Area B | B02 Photonen-getriebener Energietransfer über Grenzflächen zwischen Materialien mit starken Korrelationen"],["dc.relation","SFB 1073 | Topical Area B | B09 Transporteigenschaften von elektronen-phononengekoppelten Systemen"],["dc.relation.eissn","2469-9969"],["dc.relation.issn","2469-9950"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Charge density wave breakdown in a heterostructure with electron-phonon coupling"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","033011"],["dc.bibliographiccitation.journal","New Journal of Physics"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Scherff, Malte"],["dc.contributor.author","Meyer, B."],["dc.contributor.author","Hoffmann, J."],["dc.contributor.author","Jooss, C."],["dc.contributor.author","Feuchter, Manuel"],["dc.contributor.author","Kamlah, Marc"],["dc.date.accessioned","2018-11-07T09:59:48Z"],["dc.date.available","2018-11-07T09:59:48Z"],["dc.date.issued","2015"],["dc.description.abstract","We report here on the presence of two different nonvolatile resistive switching mechanisms in Pt-Pr0.67Ca0.33MnO3-Pt sandwich structures based on pulsed electrical transport measurements. As a function of pulse length, amplitude and temperature, the devices show two different switching regimes. The first is positive switching (PS) where a high resistance state (HRS) evolves at positive bias at the top electrode in the voltage range of U approximate to 0.5-1.2 V and pulse lengths t(p) approximate to 10(-7) s. In addition, we observe a cross over to negative switching (NS) for U > 1 V and t(p) approximate to 10(-3) s. Here, the HRS evolves at negative bias applied at the top electrode. We present strong evidence that both switching mechanisms take place at the interface between Pr0.67Ca0.33MnO3 and the top electrode. Based on finite element simulations of the temperature evolution during the electrical pulses, we show that the onset of Joule heating is characteristic of the PS regime, whereas drastic temperature increases of several hundred Kelvin evolve during NS. Based on the observed different timescales, pulse amplitudes and temperature dependences of PS and NS, respectively, we suggest that two different switching mechanisms are involved: a fast, short range exchange of oxygen at the interface with the metallic electrode for PS and a slower, long range redistribution of oxygen in the entire PCMO film for the NS."],["dc.description.sponsorship","Open Access Publikationsfonds 2015"],["dc.identifier.doi","10.1088/1367-2630/17/3/033011"],["dc.identifier.isi","000352898500011"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11865"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37669"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1367-2630"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","Pulse length and amplitude dependent resistive switching mechanisms in Pt-Pr0.67Ca0.33MnO3-Pt sandwich structures"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1155"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Zeitschrift für physikalische Chemie"],["dc.bibliographiccitation.lastpage","1169"],["dc.bibliographiccitation.volume","234"],["dc.contributor.author","Cottre, Thorsten"],["dc.contributor.author","Welter, Katharina"],["dc.contributor.author","Ronge, Emanuel"],["dc.contributor.author","Smirnov, Vladimir"],["dc.contributor.author","Finger, Friedhelm"],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Kaiser, Bernhard"],["dc.contributor.author","Jaegermann, Wolfram"],["dc.date.accessioned","2022-01-24T15:09:20Z"],["dc.date.available","2022-01-24T15:09:20Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1515/zpch-2019-1483"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/98602"],["dc.relation.issn","2196-7156"],["dc.relation.issn","0942-9352"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Integrated Devices for Photoelectrochemical Water Splitting Using Adapted Silicon Based Multi-Junction Solar Cells Protected by ALD TiO2 Coatings"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","243502"],["dc.bibliographiccitation.issue","24"],["dc.bibliographiccitation.journal","Applied Physics Letters"],["dc.bibliographiccitation.volume","110"],["dc.contributor.author","Kramer, Thilo"],["dc.contributor.author","Scherff, Malte"],["dc.contributor.author","Mierwaldt, Daniel"],["dc.contributor.author","Hoffmann, Joerg"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2018-11-07T10:22:44Z"],["dc.date.available","2018-11-07T10:22:44Z"],["dc.date.issued","2017"],["dc.description.abstract","Non-volatile resistance change under electric stimulation in oxides is a promising path to next generation memory devices. However, the underlying mechanisms are still not fully understood. We report here on the study of switching in Pr0.67Ca0.33MnO3-delta (PCMO) films sandwiched by noble metal Pt electrodes, where electrode oxidation can be excluded. In order to develop an understanding of the switching induced oxygen migration, its initial concentration is modified by post-annealing of the deposited PCMO films. The oxygen distribution is obtained by manganese valence determination using spatially resolved electron energy loss spectroscopy in scanning transmission electron microscopy mode. We observe correlations between virgin state resistance, resistive switching properties, oxygen vacancy distribution, and stress/strain state of the PCMO films and propose a simplified interface resistance model based on the measured valence distribution. It assumes a linear correlation of oxygen vacancy concentration with conductivity and a metal to insulator transition above a critical vacancy concentration threshold. Our results suggest that resistance changes can take place at both interfaces of symmetric devices and only requires small changes in oxygen vacancy concentration. (C) 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/)."],["dc.description.sponsorship","DFG [Jo 348/10-01]"],["dc.identifier.doi","10.1063/1.4985645"],["dc.identifier.isi","000403678300029"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42329"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1077-3118"],["dc.relation.issn","0003-6951"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Role of oxygen vacancies for resistive switching in noble metal sandwiched Pr0.67Ca0.33MnO3-delta"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]