Moshnyaga, Vasily T.

[["dc.bibliographiccitation.firstpage","56"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Materials"],["dc.bibliographiccitation.lastpage","61"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Mueller, Georg M."],["dc.contributor.author","Walowski, Jakob"],["dc.contributor.author","Djordjevic, Marija"],["dc.contributor.author","Miao, Gou-Xing"],["dc.contributor.author","Gupta, Arunava"],["dc.contributor.author","Ramos, Ana V."],["dc.contributor.author","Gehrke, Kai"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Samwer, Konrad H."],["dc.contributor.author","Schmalhorst, Jan"],["dc.contributor.author","Thomas, Andy"],["dc.contributor.author","Huetten, Andreas"],["dc.contributor.author","Reiss, Guenter"],["dc.contributor.author","Moodera, Jagadeesh S."],["dc.contributor.author","Muenzenberg, Markus G."],["dc.date.accessioned","2018-11-07T08:35:10Z"],["dc.date.available","2018-11-07T08:35:10Z"],["dc.date.issued","2009"],["dc.description.abstract","Knowledge of the spin polarization is of fundamental importance for the use of a material in spintronics applications. Here, we used femtosecond optical excitation of half-metals to distinguish between half-metallic and metallic properties. Because the direct energy transfer by Elliot-Yafet scattering is blocked in a half-metal, the demagnetization time is a measure for the degree of half-metallicity. We propose that this characteristic enables us vice versa to establish a novel and fast characterization tool for this highly important material class used in spin-electronic devices. The technique has been applied to a variety of materials where the spin polarization at the Fermi level ranges from 45 to 98%: Ni, Co2MnSi, Fe3O4, La0.66Sr0.33MnO3 and CrO2."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [SPP 1133, SFB 602]; NSF; ONR; NSF MRSEC"],["dc.identifier.doi","10.1038/NMAT2341"],["dc.identifier.isi","000261866700020"],["dc.identifier.pmid","19079243"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17997"],["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","Spin polarization in half-metals probed by femtosecond spin excitation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","245124"],["dc.bibliographiccitation.issue","24"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","87"],["dc.contributor.author","Gorshunov, Boris P."],["dc.contributor.author","Zhukova, Elena S."],["dc.contributor.author","Torgashev, Victor I."],["dc.contributor.author","Kadyrov, Lenar S."],["dc.contributor.author","Motovilova, Elizaveta A."],["dc.contributor.author","Fischgrabe, Florian"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Zhang, T."],["dc.contributor.author","Kremer, Reinhard K."],["dc.contributor.author","Pracht, Uwe S."],["dc.contributor.author","Zapf, Sina"],["dc.contributor.author","Dressel, Martin"],["dc.date.accessioned","2018-11-07T09:23:35Z"],["dc.date.available","2018-11-07T09:23:35Z"],["dc.date.issued","2013"],["dc.description.abstract","In the charge-ordered phase of strongly doped manganites La1-xCaxMnO3 (x >= 0.5) absorption lines appear in the terahertz spectral range for commensurate x values right below the charge-ordering temperature. They are connected to acoustic phonons that become optically active by folding of the Brillouin zone. At lower temperatures a strongly asymmetric extra absorption band develops at frequencies corresponding to the position of the lowest-energy van Hove singularity in the reduced Brillouin zone. The band is assigned to the boson peak, i.e., to the excess of lattice vibrational states over the standard Debye contribution. The folded phonons and the boson peak do not show up for incommensurate calcium contents when no distinct Brillouin zone folding exists."],["dc.identifier.doi","10.1103/PhysRevB.87.245124"],["dc.identifier.isi","000320951100008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29618"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","1098-0121"],["dc.title","Boson peak in overdoped manganites La1-xCaxMnO3"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","17D701"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","Journal of Applied Physics"],["dc.bibliographiccitation.volume","113"],["dc.contributor.author","Huehn, Sebastian"],["dc.contributor.author","Jungbauer, Markus"],["dc.contributor.author","Michelmann, M."],["dc.contributor.author","Massel, F."],["dc.contributor.author","Koeth, F."],["dc.contributor.author","Ballani, C."],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.date.accessioned","2018-11-07T09:24:44Z"],["dc.date.available","2018-11-07T09:24:44Z"],["dc.date.issued","2013"],["dc.description.abstract","Colossal magnetoresistance (CMR) and nm-scale electronic inhomogeneity close to the first order phase transition in perovskite manganites, e.g., (La1-yPry)(0.67)Ca0.33MnO3 still remain a puzzling phenomenon. We experimentally model a metal-insulator phase coexistence by growing a short period (LCMOn/PCMOn)(m) superlattices (SLs) with the same thickness for both components. CMR effect was studied as a function of the individual layer thickness n = 2-8 and then compared with chemically homogeneous (La1-yPry)(0.67)Ca0.33MnO3 LPCMO films. We show that SLs can be superimposed in the phase diagram of LPCMO. The results also point out the importance of the nm-scale electronic rather than chemical separation for realization of the CMR effect as well as limits the lowest boundary for the thickness of an individual manganite material to n similar to 4u.c. (C) 2013 American Institute of Physics."],["dc.identifier.doi","10.1063/1.4793711"],["dc.identifier.isi","000319292800219"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29895"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.publisher.place","Melville"],["dc.relation.conference","12th Joint MMM-Intermag Conference"],["dc.relation.eventlocation","Chicago, IL"],["dc.relation.issn","1089-7550"],["dc.relation.issn","0021-8979"],["dc.title","Modeling of colossal magnetoresistance in La0.67Ca0.33MnO3/Pr0.67Ca0.33MnO3 superlattices: Comparison with individual (La1-yPry)(0.67)Ca0.33MnO3 films"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","197401"],["dc.bibliographiccitation.issue","19"],["dc.bibliographiccitation.journal","Physical Review Letters"],["dc.bibliographiccitation.volume","98"],["dc.contributor.author","Pimenov, A."],["dc.contributor.author","Loidl, Alois"],["dc.contributor.author","Gehrke, Kai"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Samwer, Konrad H."],["dc.date.accessioned","2018-11-07T11:02:25Z"],["dc.date.available","2018-11-07T11:02:25Z"],["dc.date.issued","2007"],["dc.description.abstract","It is generally believed that nature does not provide materials with negative refraction. Here we demonstrate experimentally that such materials do exist at least at GHz frequencies: ferromagnetic metals reveal a negative refraction index close to the frequency of the ferromagnetic resonance. The experimental realization utilizes a colossal magnetoresistance manganite La2/3Ca1/3MnO3 as an example. In this material the negative refractive index can be achieved even at room temperature using external magnetic fields."],["dc.identifier.doi","10.1103/PhysRevLett.98.197401"],["dc.identifier.isi","000246413200053"],["dc.identifier.pmid","17677658"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/51379"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","American Physical Soc"],["dc.relation.issn","0031-9007"],["dc.title","Negative refraction observed in a metallic ferromagnet in the gigahertz frequency range"],["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 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","064401"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","75"],["dc.contributor.author","Mishina, E. D."],["dc.contributor.author","Morosov, A. I."],["dc.contributor.author","Mishina, A. V."],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Sudheendra, L."],["dc.contributor.author","Samwer, Konrad H."],["dc.contributor.author","Rasing, Th."],["dc.date.accessioned","2018-11-07T11:05:33Z"],["dc.date.available","2018-11-07T11:05:33Z"],["dc.date.issued","2007"],["dc.description.abstract","The crystallographic and magnetic symmetry of centrosymmetric perovskite manganite epitaxial films is studied by magnetization-induced optical second harmonic generation (MSHG). It is shown that not only linear but also quadratic terms in the magnetization affect the nonlinear-optical response, the latter being even dominant for special geometries. In that case MSHG allows to simultaneously probe the crystallographic structure, the net magnetization (zero in demagnetized material), and magnetization squared (nonzero in demagnetized material)."],["dc.identifier.doi","10.1103/PhysRevB.75.064401"],["dc.identifier.isi","000244533000038"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52090"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","American Physical Soc"],["dc.relation.issn","1098-0121"],["dc.title","Quadratic effects in the nonlinear magneto-optical response of perovskite manganites studied with magnetization-induced second harmonic generation"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","489"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Crystals"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Moshnyaga, Vasily"],["dc.contributor.author","Samwer, Konrad"],["dc.date.accessioned","2019-09-24T09:47:53Z"],["dc.date.available","2019-09-24T09:47:53Z"],["dc.date.issued","2019"],["dc.description.abstract","Transition metal functional oxides, e.g., perovskite manganites, with strong electron, spin and lattice correlations, are well-known for different phase transitions and field-induced colossal effects at the phase transition. Recently, the interfaces between dissimilar perovskites were shown to be a promising concept for the search of emerging phases with novel functionalities. We demonstrate that the properties of manganite films are effectively controlled by low dimensional emerging phases at intrinsic and extrinsic interfaces and appeared as a result of symmetry breaking. The examples include correlated Jahn–Teller polarons in the phase-separated (La1−yPry)0.7Ca0.3MnO3, electron-rich Jahn–Teller-distorted surface or “dead” layer in La0.7Sr0.3MnO3, electric-field-induced healing of “dead” layer as an origin of resistance switching effect, and high-TC ferromagnetic emerging phase at the SrMnO3/LaMnO3 interface in superlattices. These 2D polaronic phases with short-range electron, spin, and lattice reconstructions could be extremely sensitive to external fields, thus, providing a rational explanation of colossal effects in perovskite manganites."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2019"],["dc.identifier.doi","10.3390/cryst9100489"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16406"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62462"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","MDPI"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/246102/EU//IFOX"],["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.eissn","2073-4352"],["dc.relation.issn","2073-4352"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Polaronic Emergent Phases in Manganite-based Heterostructures"],["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","2201282"],["dc.bibliographiccitation.journal","Advanced Materials Interfaces"],["dc.contributor.author","Bange, Jan Philipp"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Schüler, Leonard"],["dc.contributor.author","Lyzwa, Fryderyk"],["dc.contributor.author","Keunecke, Marius"],["dc.contributor.author","Lopatin, Sergei"],["dc.contributor.author","Bruchmann‐Bamberg, Vitaly"],["dc.contributor.author","Moshnyaga, Vasily"],["dc.date.accessioned","2022-11-01T10:16:50Z"],["dc.date.available","2022-11-01T10:16:50Z"],["dc.date.issued","2022"],["dc.description.sponsorship"," Deutsche Forschungsgemeinschaft https://doi.org/10.13039/501100001659"],["dc.description.sponsorship"," Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung https://doi.org/10.13039/501100001711"],["dc.identifier.doi","10.1002/admi.202201282"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/116666"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-605"],["dc.relation.issn","2196-7350"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Charge Transfer Control of Emergent Magnetism at SrMnO\n 3\n /LaMnO\n 3\n Interfaces"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","17D709"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","Journal of Applied Physics"],["dc.bibliographiccitation.volume","113"],["dc.contributor.author","Jungbauer, Markus"],["dc.contributor.author","Huehn, Sebastian"],["dc.contributor.author","Michelmann, M."],["dc.contributor.author","Goering, Richard V."],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.date.accessioned","2018-11-07T09:24:44Z"],["dc.date.available","2018-11-07T09:24:44Z"],["dc.date.issued","2013"],["dc.description.abstract","Exchange bias (EB) has been observed for all-manganite La0.7Sr0.3MnO3/SrMnO3/La0.7Sr0.3MnO3 trilayers with ferromagnetic La0.7Sr0.3MnO3 and G-type antiferromagnetic SrMnO3 (SMO) layers, grown on (001) SrTiO3 substrates by metalorganic aerosol deposition. The field shift of the magnetic hysteresis loop H-E and the coercivity H-C decay exponentially with temperature. H-E exhibits a global maximum as a function of SMO interlayer thickness at t(SMO) approximate to 4.5 nm. We argue that EB behaviour can be explained by the interplay of a spinglass state at the interface and theoretically proposed mechanism based on the Dzyaloshinskii-Moriya interaction. (C) 2013 American Institute of Physics."],["dc.identifier.doi","10.1063/1.4798349"],["dc.identifier.isi","000319292800227"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29896"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.publisher.place","Melville"],["dc.relation.conference","12th Joint MMM-Intermag Conference"],["dc.relation.eventlocation","Chicago, IL"],["dc.relation.issn","1089-7550"],["dc.relation.issn","0021-8979"],["dc.title","Exchange bias in La0.7Sr0.3MnO3/SrMnO3/La0.7Sr0.3MnO3 trilayers"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2002049"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Advanced Materials Interfaces"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Hoffmann-Urlaub, Sarah"],["dc.contributor.author","Ross, Ulrich"],["dc.contributor.author","Hoffmann, Jörg"],["dc.contributor.author","Belenchuk, Alexandr"],["dc.contributor.author","Shapoval, Oleg"],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Ma, Qian"],["dc.contributor.author","Kressdorf, Birte"],["dc.contributor.author","Moshnyaga, Vasily"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2021-04-14T08:29:32Z"],["dc.date.available","2021-04-14T08:29:32Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract Interest in layered Ruddlesden–Popper (RP) strongly correlated manganites of Pr0.5Ca1.5MnO4 as well as in their thin film polymorphs is motivated by the high temperature of charge orbital ordering above room temperature. The c‐axis orientation in epitaxial films is tailored by different SrTiO3 (STO) substrate orientations and CaMnO3 (CMO) buffer layers. Films on STO(110) show in‐plane alignment of the c‐axis parallel to the [100] direction. On STO(100), two possible directions of the in‐plane c‐axis lead to a mosaic like, quasi 2D nanostructure, consisting of RP, rock‐salt, and perovskite blocks. With the CMO buffer layer, Pr0.5Ca1.5MnO4 epitaxial films with c‐axis out‐of‐plane are realized. Different physical vapor deposition techniques as ion beam sputtering, pulsed laser deposition and metalorganic aerosol deposition are applied in order to distinguish effects of growth conditions from intrinsic epitaxial properties. Despite their very different growth conditions, surface morphology, crystal structure, and orientation of the thin films reveal a high level of similarity as verified by X‐ray diffraction, scanning, and high resolution transmission electron microscopy. For different epitaxial relations stress in the films is relaxed by means of modified interface chemistry. The charge ordering in the films occurs at a temperature close to that expected in bulk material."],["dc.description.abstract","The growth direction of a Ruddlesden–Popper Pr0.5Ca1.5MnO4 thin film is governed by its strain state. For different SrTiO3 substrate orientations the unit cells of the film are aligned in parallel or in a perpendicular configuration—forming a mosaic like microstructure. With a CaMnO3 buffer layer the c‐axis can even be tilted to the out‐of‐plane direction. image"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1002/admi.202002049"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82926"],["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 A | A02 Verständnis und Manipulation von Dissipationskanälen des Energietransports"],["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.eissn","2196-7350"],["dc.relation.issn","2196-7350"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made."],["dc.title","Tailoring c-axis orientation in epitaxial Ruddlesden-Popper Pr0.5Ca1.5MnO4 films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]