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Manipulating magnetism and orbitals by electric fields

Applicant Staub Urs
Number 119609
Funding scheme Project funding (Div. I-III)
Research institution Synchrotron Lichtquelle Schweiz Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.11.2008 - 31.10.2011
Approved amount 177'725.00
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Keywords (5)

multiferroics; ordering phenomena; magnetic order; magento-electric effects; resonant x-ray effects

Lay Summary (English)

Lead
Lay summary
The coexistence of ferromagnetism (the solid is spontaneously magnetic such as iron) and ferroelectricity (the solid is spontaneously electric charged) in solid materials is rare, and even much rarer is the coupling between these phenomena. Materials with such couplings are often called multiferroics, and the coupling is based on the magneto-electric effect. The interest in these materials lies in the fact that a manipulation of electric (magnetic) properties by magnetic (electric) fields would be of great use in spintronic devices. In recent years, it has been shown that non-collinear, long-range antiferromagnetic structures can induce ferroelectricity, and a strong coupling is observed in some mainly oxide materials. We propose to study how the magnetic properties are influenced by the application of in-situ electric fields. For this we will use experimental techniques based on x-rays and neutrons. These techniques allow us to study how are the magnetic moments ordered on the atomic level and what happens with them, when a electric field is applied. We will in particular study materials based perovskite type manganites, where electron localization, magnetic order and possible occurrence of ferroelectricity may coexist.In summary, understanding the influence of electric fields on magnetic materials in multiferroic materials have strong potential in spin-tronic devices, devices where exchange of electric and magnetic information are inherently entangled.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Orbital correlations and dimensional crossover in epitaxial Pr0.5Ca0.5MnO3/La0.5Sr0.5MnO3 superlattices
Wadati H., Okamoto J., Garganourakis M., Scagnoli V., Staub U., Sakai E., Kumigashira H., Sugiyama T., Ikenaga E., Nakamura M., Kawasaki M., Tokura Y. (2014), Orbital correlations and dimensional crossover in epitaxial Pr0.5Ca0.5MnO3/La0.5Sr0.5MnO3 superlattices, in NEW JOURNAL OF PHYSICS, 16, 073044.
Dzyaloshinskii-Moriya driven helical-butterfly structure in Ba3NbFe3Si2O14
Scagnoli V., Huang S. W., Garganourakis M., de Souza R. A., Staub U., Simonet V., Lejay P., Ballou R. (2013), Dzyaloshinskii-Moriya driven helical-butterfly structure in Ba3NbFe3Si2O14, in PHYSICAL REVIEW B, 88(10), 104417.
Melting of chiral order in terbium manganate (TbMnO3) observed with resonant x-ray Bragg diffraction
Lovesey S. W., Scagnoli V., Garganourakis M., Koohpayeh S. M., Detlefs C., Staub U. (2013), Melting of chiral order in terbium manganate (TbMnO3) observed with resonant x-ray Bragg diffraction, in JOURNAL OF PHYSICS-CONDENSED MATTER, 25(36), 362202.
Optical and x-ray time resolved study of the structural transition in mixed valence manganites
Caviezel A., Staub U., Johnson S. L., Mariager S. O., Ingold G., Moehr-Vorobeva E., Garganourakis M., Huang S. W., Milne C. J., Jia Q. X., Cheong S. -W., Beaud P. (2013), Optical and x-ray time resolved study of the structural transition in mixed valence manganites, in XVIIITH INTERNATIONAL CONFERENCE ON ULTRAFAST PHENOMENA, 41, 4103002.
Femtosecond dynamics of the structural transition in mixed valence manganites
Caviezel A., Staub U., Johnson S. L., Mariager S. O., Moehr-Vorobeva E., Ingold G., Milne C. J., Garganourakis M., Scagnoli V., Huang S. W., Jia Q. X., Cheong S. -W., Beaud P. (2012), Femtosecond dynamics of the structural transition in mixed valence manganites, in PHYSICAL REVIEW B, 86(17), 174105.
Ferromagnetic-type order of atomic multipoles in the polar ferrimagnetic GaFeO3
Staub U., Piamonteze C., Garganourakis M., Collins S. P., Koohpayeh S. M., Fort D., Lovesey S. W. (2012), Ferromagnetic-type order of atomic multipoles in the polar ferrimagnetic GaFeO3, in PHYSICAL REVIEW B, 85(14), 144421.
Imprinting Magnetic Information in Manganites with X Rays
Garganourakis M., Scagnoli V., Huang S. W., Staub U., Wadati H., Nakamura M., Guzenko V. A., Kawasaki M., Tokura Y. (2012), Imprinting Magnetic Information in Manganites with X Rays, in PHYSICAL REVIEW LETTERS, 109(15), 157203.
Magnetic and electronic orderings in orthorhombic RMnO3 (R = Tm, Lu) studied by resonant soft x-ray powder diffraction
Garganourakis M., Bodenthin Y., de Souza R. A., Scagnoli V., Doenni A., Tachibana M., Kitazawa H., Takayama-Muromachi E., Staub U. (2012), Magnetic and electronic orderings in orthorhombic RMnO3 (R = Tm, Lu) studied by resonant soft x-ray powder diffraction, in PHYSICAL REVIEW B, 86(5), 054425.
Origin of the Large Polarization in Multiferroic YMnO3 Thin Films Revealed by Soft- and Hard-X-Ray Diffraction
Wadati H., Okamoto J., Garganourakis M., Scagnoli V., Staub U., Yamasaki Y., Nakao H., Murakami Y., Mochizuki M., Nakamura M., Kawasaki M., Tokura Y. (2012), Origin of the Large Polarization in Multiferroic YMnO3 Thin Films Revealed by Soft- and Hard-X-Ray Diffraction, in PHYSICAL REVIEW LETTERS, 108(4), 047203.
Magnetic structure and electric field effects in multiferroic YMn2O5
de Souza R. A., Staub U., Scagnoli V., Garganourakis M., Bodenthin Y., Huang S. -W., Garcia-Fernandez M., Ji S., Lee S. -H., Park S., Cheong S. -W. (2011), Magnetic structure and electric field effects in multiferroic YMn2O5, in PHYSICAL REVIEW B, 84(10), 104416.
Observation of Orbital Currents in CuO
Scagnoli V, Staub U, Bodenthin Y, de Souza RA, Garcia-Fernandez M, Garganourakis M, Boothroyd AT, Prabhakaran D, Lovesey SW (2011), Observation of Orbital Currents in CuO, in SCIENCE, 332(6030), 696-698.
Observation of Orbital Currents in CuO
Scagnoli V., Staub U., Bodenthin Y., de Souza R. A., Garcia-Fernandez M., Garganourakis M., Boothroyd A. T., Prabhakaran D., Lovesey S. W. (2011), Observation of Orbital Currents in CuO, in SCIENCE, 332(6030), 696-698.
Origin of the anomalous low-temperature phase transition in BaVS3
de Souza R. A., Staub U., Scagnoli V., Garganourakis M., Bodenthin Y., Berger H. (2011), Origin of the anomalous low-temperature phase transition in BaVS3, in PHYSICAL REVIEW B, 84(1), 014409.
Circularly polarized soft x-ray diffraction study of helical magnetism in hexaferrite
Mulders A. M., Lawrence S. M., Princep A. J., Staub U., Bodenthin Y., Garcia-Fernandez M., Garganourakis M., Hester J., Macquart R., Ling C. D. (2010), Circularly polarized soft x-ray diffraction study of helical magnetism in hexaferrite, in PHYSICAL REVIEW B, 81(9), 092405.
Magnetic order of multiferroic ErMn2O5 studied by resonant soft x-ray Bragg diffraction
Staub U., Bodenthin Y., Garcia-Fernandez M., de Souza R. A., Garganourakis M., Golovenchits E. I., Sanina V. A., Lushnikov S. G. (2010), Magnetic order of multiferroic ErMn2O5 studied by resonant soft x-ray Bragg diffraction, in PHYSICAL REVIEW B, 81(14), 144401.
Orbital and magnetic ordering in Pr1-xCaxMnO3 and Nd1-xSrxMnO3 manganites near half doping studied by resonant soft x-ray powder diffraction
Staub U., Garcia-Fernandez M., Bodenthin Y., Scagnoli V., De Souza R. A., Garganourakis M., Pomjakushina E., Conder K. (2009), Orbital and magnetic ordering in Pr1-xCaxMnO3 and Nd1-xSrxMnO3 manganites near half doping studied by resonant soft x-ray powder diffraction, in PHYSICAL REVIEW B, 79(22), 224419.
Parity- and time-odd atomic multipoles in magnetoelectric GaFeO3 as seen via soft x-ray Bragg diffraction
Staub U., Bodenthin Y., Piamonteze C., Garcia-Fernandez M., Scagnoli V., Garganourakis M., Koohpayeh S., Fort D., Lovesey S. W. (2009), Parity- and time-odd atomic multipoles in magnetoelectric GaFeO3 as seen via soft x-ray Bragg diffraction, in PHYSICAL REVIEW B, 80(14), 140410.

Associated projects

Number Title Start Funding scheme
137655 Manipulating magnetism and orbitals by electric fields 01.11.2011 Project funding (Div. I-III)
137657 Magnetic and electric properties of the multiferroic orthorhombic RMnO3 family 01.08.2012 Project funding (Div. I-III)
109165 Electronic and Magnetic Ordering Phenomena at metal-insulator transitions 01.01.2006 Project funding (Div. I-III)
139082 Sensitive magnetic susceptibility measurements of materials with novel magnetic correlations and ground states 01.07.2012 R'EQUIP
137655 Manipulating magnetism and orbitals by electric fields 01.11.2011 Project funding (Div. I-III)

Abstract

The coexistence of magnetism and ferroelectricity in solid materials is unusual, and still more unusual is the coupling between these phenomena. Materials with such couplings are often called multiferroics, and the coupling is based on the magneto-electric effect. The interest in these materials lies in the fact that a manipulation of electric (magnetic) properties by magnetic (electric) fields would be of great use in spintronic devices. In recent years, it has been shown that non-collinear, long-range antiferromagnetic structures can induce ferroelectricity, and a strong coupling is observed in some of these materials. We propose to study how the magnetic orbital properties are influenced by the application of in-situ electric fields. For this we will use a reciprocal space technique-resonant x-ray diffraction (RXD) - predominantly in the soft x-ray regime. This is a challenging and rapidly developing experimental technique which provides direct access to the magnetic and electronic state of the valence shells of 3d and 4f materials. Our preliminary RXD experiments demonstrate significant changes in the magnetic structure in ErMn2O5 with in-situ applied electric fields. In this proposal, investigations are focused on transition metal oxides, such as multiferroic RMnO3 and RMn2O5, as well as on hexaferrites. In addition, the study of the effect of the applied electric field on the orbitals in manganites will determine the interplay of ferroelectricity and orbital ordering.
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