Moshnyaga, Vasily T.

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Physical Review B"],["dc.bibliographiccitation.volume","98"],["dc.contributor.author","Meyer, Ch."],["dc.contributor.author","Roddatis, V."],["dc.contributor.author","Ksoll, P."],["dc.contributor.author","Damaschke, B."],["dc.contributor.author","Moshnyaga, V."],["dc.date.accessioned","2020-12-10T18:25:07Z"],["dc.date.available","2020-12-10T18:25:07Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1103/PhysRevB.98.134433"],["dc.identifier.eissn","2469-9969"],["dc.identifier.issn","2469-9950"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75582"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Structure, magnetism, and spin-phonon coupling in heteroepitaxial L a 2 CoMn O 6 / A l 2 O 3 ( 0001 ) films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","121103"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","87"],["dc.contributor.author","Krisponeit, Jon-Olaf"],["dc.contributor.author","Kalkert, Christin"],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Samwer, Konrad H."],["dc.date.accessioned","2018-11-07T09:27:04Z"],["dc.date.available","2018-11-07T09:27:04Z"],["dc.date.issued","2013"],["dc.description.abstract","We performed time-resolved nanoscale studies on the resistive switching of perovskite manganite thin films by means of conductive atomic force microscopy. Creep and recovery features have been observed in the evolution of metallic domains via pulse-train experiments and current map sequences. Local I (t) curves show 1/f(alpha) noise signatures during the switching process, a phenomenon which occurs in various physical processes consisting of discrete jumps of different sizes, such as the Barkhausen effect. Our results imply that the resistive switching falls into this universal class of effects with dynamics determined by the pinning and depinning of structural domain walls."],["dc.description.sponsorship","DFG [602, A2]"],["dc.identifier.doi","10.1103/PhysRevB.87.121103"],["dc.identifier.isi","000316104400001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30451"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","1098-0121"],["dc.title","Time-resolved resistive switching on manganite surfaces: Creep and 1/f(alpha) a noise signatures indicate pinning of nanoscale domains"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","2387"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Merten, S."],["dc.contributor.author","Shapoval, O."],["dc.contributor.author","Damaschke, B."],["dc.contributor.author","Samwer, K."],["dc.contributor.author","Moshnyaga, Vasily"],["dc.date.accessioned","2019-07-09T11:51:04Z"],["dc.date.available","2019-07-09T11:51:04Z"],["dc.date.issued","2019"],["dc.description.abstract","A long-standing issue in the physics of the colossal magnetoresistance is the role of electron-phonon coupling, which manifests itself as Jahn-Teller polarons. The origin and architecture of polarons makes it possible to study their behavior by Raman spectroscopy, which allows to analyze the polaronic behavior in an applied magnetic field. We performed magnetic-field-dependent Raman spectroscopy on thin films of (La0.6Pr0.4)0.7Ca0.3MnO3 in a range of H = 0-50 kOe and compared the obtained Raman spectra with the magnetic field behavior of the electrical resistivity. In the vicinity of the Curie temperature, TC = 197 K, the intensity of the Jahn-Teller stretching mode at 614 cm-1 and of the bending mode at 443 cm-1 was found to be suppressed and enhanced, respectively. This observed behavior has a remarkable similarity with the field and temperature dependence of the colossal magnetoresistance in (La0.6Pr0.4)0.7Ca0.3MnO3. Our work provides direct evidence that the reduction of the amount of Jahn-Teller polarons at the phase transition is the main mechanism underlying the colossal magnetoresistance."],["dc.identifier.doi","10.1038/s41598-019-39597-1"],["dc.identifier.pmid","30787387"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16040"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59867"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A02 Verständnis und Manipulation von Dissipationskanälen des Energietransports"],["dc.relation","SFB 1073 | Topical Area B | B01 Photon-induced structural phase transition controlled by electronic correlations"],["dc.relation","SFB 1073 | Topical Area B | B04 External field control of photon energy conversion in manganites"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.subject.ddc","530"],["dc.title","Magnetic-Field-Induced Suppression of Jahn-Teller Phonon Bands in (La0.6Pr0.4)0.7Ca0.3MnO3: the Mechanism of Colossal Magnetoresistance shown by Raman Spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","144440"],["dc.bibliographiccitation.issue","14"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","82"],["dc.contributor.author","Krisponeit, Jon-Olaf"],["dc.contributor.author","Kalkert, Christin"],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Samwer, Konrad H."],["dc.date.accessioned","2018-11-07T08:37:54Z"],["dc.date.available","2018-11-07T08:37:54Z"],["dc.date.issued","2010"],["dc.description.abstract","We report the local-conductivity properties of a La0.8Ca0.2MnO3 thin film, studied by conductive atomic force microscopy. Nonvolatile and bipolar reversible switching of nanometer-sized regions was observed. A threshold voltage, U-c approximate to 3 V, and a logarithmic pulse-width dependence compatible with domain-wall creep were revealed. The results are difficult to explain in terms of an ionic drift scenario but rather indicate a switching mechanism based on orbital and accompanying structural changes. A phenomenological model of an electric field-induced structural transition is proposed."],["dc.description.sponsorship","DFG [SFB 602, TPA2]; Leibniz program"],["dc.identifier.doi","10.1103/PhysRevB.82.144440"],["dc.identifier.isi","000283574200003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/18651"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","1098-0121"],["dc.title","Nanoscale resistance switching in manganite thin films: Sharp voltage threshold and pulse-width dependence"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Physical Review Letters"],["dc.bibliographiccitation.volume","122"],["dc.contributor.author","Krisponeit, Jon-Olaf"],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Moshnyaga, Vasily"],["dc.contributor.author","Samwer, Konrad"],["dc.date.accessioned","2020-12-10T18:25:49Z"],["dc.date.available","2020-12-10T18:25:49Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1103/PhysRevLett.122.136801"],["dc.identifier.eissn","1079-7114"],["dc.identifier.issn","0031-9007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75840"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A01 Reibung unter aktiver Kontrolle in Systemen mit optimierten Freiheitsgraden"],["dc.relation","SFB 1073 | Topical Area A | A02 Verständnis und Manipulation von Dissipationskanälen des Energietransports"],["dc.title","Layer-by-Layer Resistive Switching: Multistate Functionality due to Electric-Field-Induced Healing of Dead Layers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Physical review materials"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Merten, S."],["dc.contributor.author","Bruchmann-Bamberg, V."],["dc.contributor.author","Damaschke, B."],["dc.contributor.author","Samwer, K."],["dc.contributor.author","Moshnyaga, Vasily"],["dc.date.accessioned","2020-12-10T18:25:52Z"],["dc.date.available","2020-12-10T18:25:52Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1103/PhysRevMaterials.3.060401"],["dc.identifier.eissn","2475-9953"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16433"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/75864"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A02 Verständnis und Manipulation von Dissipationskanälen des Energietransports"],["dc.relation","SFB 1073 | Topical Area B | B01 Photon-induced structural phase transition controlled by electronic correlations"],["dc.relation","SFB 1073 | Topical Area B | B04 External field control of photon energy conversion in manganites"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Jahn-Teller reconstructed surface of the doped manganites shown by means of surface-enhanced Raman spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","247"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Nature Materials"],["dc.bibliographiccitation.lastpage","252"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Shapoval, O."],["dc.contributor.author","Belenchuk, A."],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Lebedev, Oleg I."],["dc.contributor.author","Verbeeck, J."],["dc.contributor.author","van Tendeloo, G."],["dc.contributor.author","Mucksch, M."],["dc.contributor.author","Tsurkan, V."],["dc.contributor.author","Tidecks, R."],["dc.contributor.author","Samwer, Konrad H."],["dc.date.accessioned","2018-11-07T10:39:50Z"],["dc.date.available","2018-11-07T10:39:50Z"],["dc.date.issued","2003"],["dc.description.abstract","'Colossal magnetoresistance' in perovskite manganites such as La0.7Ca0.3MnO3 (LCMO), is caused by the interplay of ferro-paramagnetic, metal-insulator and structural phase transitions. Moreover, different electronic phases can coexist on a very fine scale resulting in percolative electron transport. Here we report on (LCMO)(1-x):(MgO)(x) (0 < x less than or equal to 0.8) epitaxial nano-composite films in which the structure and magnetotransport properties of the manganite nanoclusters can be tuned by the tensile stress originating from the MgO second phase. With increasing x, the lattice of LCMO was found to expand, yielding a bulk tensile strain. The largest colossal magnetoresistance of 10(5)% was observed at the percolation threshold in the conductivity at x(c) approximate to 0.3, which is coupled to a structural phase transition from orthorhombic (0 < x less than or equal to 0.1) to rhombohedral R (3) over barc structure (0.33 less than or equal to x less than or equal to 0.8). An increase of the Curie temperature for the R (3) over barc phase was observed. These results may provide a general method for controlling the magnetotransport properties of manganite-based composite films by appropriate choice of the second phase."],["dc.identifier.doi","10.1038/nmat859"],["dc.identifier.isi","000182052700022"],["dc.identifier.pmid","12690398"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46149"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Nature Publishing Group"],["dc.relation.issn","1476-4660"],["dc.relation.issn","1476-1122"],["dc.title","Structural phase transition at the percolation threshold in epitaxial (La0.7Ca0.3MnO3)(1-X):(MgO)(X) nanocomposite films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","132508"],["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Applied Physics Letters"],["dc.bibliographiccitation.volume","91"],["dc.contributor.author","Stingl, Christian"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Luo, Y."],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Samwer, Konrad H."],["dc.contributor.author","Seibt, M."],["dc.date.accessioned","2018-11-07T10:58:28Z"],["dc.date.available","2018-11-07T10:58:28Z"],["dc.date.issued","2007"],["dc.description.abstract","The perovskite compound La0.67Ce0.33MnO3 (LCeMO) is a candidate for electron doping rather than the hole doping common in manganites. However, it is not clear whether Ce, which has a smaller ionic radius than other dopants, can be incorporated into the crystal lattice. Thin LCeMO films were prepared by two different deposition techniques. In both cases, a chemical phase separation is observed, which in one case leads to a self-organized columnar nanostructure with no indication for n-type doping. In the other case, we find hole doping induced by La vacancies."],["dc.identifier.doi","10.1063/1.2790494"],["dc.identifier.isi","000249787000060"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/50487"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.relation.issn","0003-6951"],["dc.title","Nanostructure of chemically phase separated La-Ce-Mn-O thin films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","014421"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","69"],["dc.contributor.author","Giesen, F."],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Samwer, Konrad H."],["dc.contributor.author","Mueller, Gerhard A."],["dc.date.accessioned","2018-11-07T10:53:06Z"],["dc.date.available","2018-11-07T10:53:06Z"],["dc.date.issued","2004"],["dc.description.abstract","All-manganite multilayers of La2/3D1/3MnO3 with D=Ca,Sr (LCMO/LSMO) were prepared in situ by off-axis pulsed laser deposition and investigated for their resistive and magnetic properties. The multilayers show a high structural quality as evidenced by x-ray diffraction and Rutherford backscattering experiments. Transport and magnetization experiments show the suppression of resistivity increase and loss in magnetic moment commonly encountered in very thin manganite films and multilayers with insulator partial layers as a consequence of an interface-induced electronic phase separation. Comparison of both types of film structures allows for the conclusion that the breakup of Mn-O chains leads to a modified Mn4+/Mn3+ ratio at interfaces which is responsible for the extrinsic electronic phase separation. We propose to explain the enhancement of LCMO resistivity yet observed by mechanical stress induced in the LCMO layers by the lattice mismatch with LSMO."],["dc.identifier.doi","10.1103/PhysRevB.69.014421"],["dc.identifier.isi","000188784800058"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49277"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","American Physical Soc"],["dc.relation.issn","1098-0121"],["dc.title","Suppression of interface-induced electronic phase separation in all-manganite multilayers by preservation of the Mn-O chain network"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","237203"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Physical Review Letters"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Becker, T."],["dc.contributor.author","Streng, C."],["dc.contributor.author","Luo, Y."],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Shannon, N."],["dc.contributor.author","Samwer, Konrad H."],["dc.date.accessioned","2018-11-07T09:42:48Z"],["dc.date.available","2018-11-07T09:42:48Z"],["dc.date.issued","2002"],["dc.description.abstract","Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogeneities, which give rise to a domain structure of conducting and insulating domains at the submicrometer scale. These domains then undergo a percolation transition. The tunneling conductance and tunneling gap measured by scanning tunneling spectroscopy were used to distinguish and visualize these domains."],["dc.identifier.doi","10.1103/PhysRevLett.89.237203"],["dc.identifier.isi","000179362700048"],["dc.identifier.pmid","12485036"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34039"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","American Physical Soc"],["dc.relation.issn","0031-9007"],["dc.title","Intrinsic inhomogeneities in manganite thin films investigated with scanning tunneling spectroscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]