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","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","326"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","JETP Letters"],["dc.bibliographiccitation.lastpage","331"],["dc.bibliographiccitation.volume","96"],["dc.contributor.author","Ivanov, M. S."],["dc.contributor.author","Mishina, E. D."],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Fiebig, M."],["dc.date.accessioned","2018-11-07T09:04:03Z"],["dc.date.available","2018-11-07T09:04:03Z"],["dc.date.issued","2012"],["dc.description.abstract","The electronic structure of doped orthorhombic (La0.6Pr0.4)(0.7)Ca0.3MnO3 manganite is studied using the second optical harmonic generation method. The analysis of the frequency and polarization dependence of the intensity related to the second harmonic demonstrates that the applied magnetic field stimulates a transition of spin-polarized electrons from the d orbitals of Mn ions to the p orbitals of O-2 ligands. The manifestation of such transition in the orthorhombic RMnO3 manganite with the distorted crystal lattice is attributed to the dipole-forbidden electronic transitions arising in the applied magnetic field. The mechanism of magnetooptical activity induced by the charge transfer between Mn and O ions is discussed."],["dc.identifier.doi","10.1134/S0021364012170079"],["dc.identifier.isi","000310836600011"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/25026"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Maik Nauka/interperiodica/springer"],["dc.relation.issn","0021-3640"],["dc.title","Nonlinear optical spectroscopy of (La0.6Pr0.4)(0.7)Ca0.3MnO3 manganite"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","232405"],["dc.bibliographiccitation.issue","23"],["dc.bibliographiccitation.journal","Applied Physics Letters"],["dc.bibliographiccitation.volume","109"],["dc.contributor.author","Belenchuk, A."],["dc.contributor.author","Shapoval, O."],["dc.contributor.author","Roddatis, Vladimir"],["dc.contributor.author","Bruchmann-Bamberg, V."],["dc.contributor.author","Samwer, Konrad H."],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.date.accessioned","2018-11-07T10:04:37Z"],["dc.date.available","2018-11-07T10:04:37Z"],["dc.date.issued","2016"],["dc.description.abstract","We report on the interface engineering in correlated manganite heterostructures by octahedral decoupling using embedded stacks of atomic layers that form the Ruddlesden-Popper structure. A room temperature magnetic decoupling was achieved through deposition of a (SrO)(2)-TiO2-(SrO)(2) sequence of atomic layers at the interface between La0.7Sr0.3MnO3 and La0.7Sr0.3Mn0.9Ru0.1O3 films. Moreover, the narrowing of the interfacial dead layer in ultrathin La0.7Sr0.3MnO3 films was demonstrated by insertion of a single (SrO)(2) rock-salt layer at the interface with the SrTiO3(100) substrate. The obtained results are discussed based on the symmetry breaking and disconnection of the MnO6 octahedra network at the interface that may lead to the improved performance of all-oxide magnetic tunnel junctions. We suggest that octahedral decoupling realized by formation of Ruddlesden-Popper interfaces is an effective structural mechanism to control functionalities of correlated perovskite heterostructures. Published by AIP Publishing."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG) [SFB 1073]"],["dc.identifier.doi","10.1063/1.4971833"],["dc.identifier.isi","000390677700026"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38737"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B04 External field control of photon energy conversion in manganites"],["dc.relation.issn","1077-3118"],["dc.relation.issn","0003-6951"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Ruddlesden-Popper interface in correlated manganite heterostructures induces magnetic decoupling and dead layer reduction"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]