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Coupled spin, charge and orbital dynamics of low-dimensional cuprates

English title Coupled spin, charge and orbital dynamics of low-dimensional cuprates
Applicant Schmitt Thorsten
Number 141325
Funding scheme Project funding (Div. I-III)
Research institution Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.09.2013 - 30.09.2016
Approved amount 187'483.00
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Keywords (5)

Resonant Inelastic X-Ray Scattering (RIXS); Electron Energy-Loss Spectroscopy (EELS); low-energy excitations; electronic structure; low-dimensional cuprates

Lay Summary (German)

Lead
Das spektroskopische Verfahren der resonanten inelastischen Röntgenstreuung (engl. RIXS) mit Sensitivität für Spin-, Ladungs- und orbitalen Anregungen in Übergangsmetalloxiden hat in den letzten 2 Jahren eine enorme Entwicklung erfahren. Kuprate in quasi-ein-dimensionaler Form als Ketten oder Leitern stellen ideale Modellsysteme mit besonderen Eigenschaften dar, die für RIXS Studien der relevanten Wechselwirkungen im Ladungs-, Spin- und orbitalen Freiheitsgrad geeignet sind.
Lay summary

Titel: Gekoppelte Spin-, Ladungs- und orbitale Dynamik in niedrigdimensionalen Kupraten

Es gibt neben RIXS nur ein anderes experimentelles Verfahren, das experimentellen Zugang zu der Dispersion der kollektiven Ladungsdichte-Anregungen in diesen Materialien gibt, und zwar die Elektronen-Energieverlust-Spektroskopie (engl. EELS). Allerdings haben diese beiden Methoden wichtige interessante und komplementäre Aspekte: Während RIXS es ermöglicht, magnetische und orbitale Anregungen mit hervorragender Empfindlichkeit zu untersuchen, ist EELS ideal für die Untersuchung der Ladungs-Transfer-Anregungen und Plasmonen geeignet.

Inhalt und Ziel des Forschungsprojektes

Die Idee dieses Projektes ist es, die neuen Möglichkeiten von RIXS mit EELS und Theorie in einem neuartigen umfassenden Ansatz für die Erforschung der elementaren Anregungen korrelierter Elektronenmaterialien zu kombinieren. Dieser neue Ansatz wird in niedrig-dimensionalen Kupraten, die gut definierte Modellsysteme von großer wissenschaftlicher Relevanz darstellen, angewendet werden. Es gibt zwei große Ziele: Das erste ist, den Ansatz und die Methodik durch das Studium der Modellmaterialien, die eine gründliche theoretische Analyse ermöglichen, zu etablieren, weil für solche Systeme die Beschreibung der RIXS und EELS Prozesse gut verstanden werden kann. Durch die Verbesserung der RIXS Datenanalyse wird dies unweigerlich neue Informationen über die elementaren Anregungen und die Kopplung zwischen ihnen in diesen niedrig-dimensionalen Modellkupraten hervorbringen. Dies wird dann den Weg zu dem zweiten Ziel dieses Projektes ebnen, diesen Ansatz zu nutzen, um neuartige Kupratmaterialien zu studieren. Konkret schlagen wir vor, Kupratverbindungen, die eindimensionale Quanten-Spin-Flüssigkeiten und neue Viel-Bein-Leiter-Systeme darstellen, zu untersuchen. Mit dem Einsatz dieser einzigartigen Kombination von experimentellen Methoden und Theorie wollen wir wichtige neue Einblicke in die kollektive Spin-, Ladungs- und Orbital-Dynamik dieser neuartigen Materialien, die gegenwärtig nicht anders zugänglich sind, gewinnen.

Wissenschaftlicher und gesellschaftlicher Kontext des Forschungsprojektes

Für diese gebündelten Forschungsanstrengungen stehen zwei weltweit führende experimentelle Einrichtungen zur Verfügung: die RIXS Anlage des PSI Villigen und die EELS Anlage des IFW Dresden. Die vorgeschlagene enge Zusammenarbeit von PSI Villigen und IFW Dresden vereint die experimentelle und theoretische Expertise der beiden Institute und wird dadurch weiterreichende Ergebnisse in diesen Studien generieren, die von einem Team allein nicht erzielt werden könnten.

Unsere Arbeit wird somit zum verbesserten Verständnis der Kupratmaterialien and insbesondere dem Verständnis der Hochtemperatursupraleitung beitragen. Weiterhin wird die RIXS Methode an diesem Forschungsthema in idealer Weise weiterentwickelt werden können. Dies ist eine wichtige Vorraussetzung für die spätere Anwendung der RIXS Technik in Studien an funktionellen Materialien mit direktem Anwendungsbezug.

Direct link to Lay Summary Last update: 29.05.2013

Responsible applicant and co-applicants

Employees

Name Institute

Publications

Publication
Coupled Cu and Mn charge and orbital orders in YBa2Cu3O7/Nd0.65(Ca1-ySry)0.35MnO3 multilayers
Perret E., Monney C., Johnston S., Khmaladze J., Lyzwa F., Gaina R., Dantz M., Pelliciari J., Piamonteze C., Mallett B. P. P., Minola M., Keimer B., Schmitt T., Bernhard C. (2018), Coupled Cu and Mn charge and orbital orders in YBa2Cu3O7/Nd0.65(Ca1-ySry)0.35MnO3 multilayers, in Communications Physics, 1(1), 45-45.
Decoupling Carrier Concentration and Electron-Phonon Coupling in Oxide Heterostructures Observed with Resonant Inelastic X-Ray Scattering
Meyers D., Nakatsukasa Ken, Mu Sai, Hao Lin, Yang Junyi, Cao Yue, Fabbris G., Miao Hu, Pelliciari J., McNally D., Dantz M., Paris E., Karapetrova E., Choi Yongseong, Haskel D., Shafer P., Arenholz E., Schmitt Thorsten, Berlijn Tom, Johnston S., Liu Jian, Dean M. P. M. (2018), Decoupling Carrier Concentration and Electron-Phonon Coupling in Oxide Heterostructures Observed with Resonant Inelastic X-Ray Scattering, in Physical Review Letters, 121(23), 236802-236802.
One-dimensional cuts through multidimensional potential-energy surfaces by tunable x rays
Eckert Sebastian, da Cruz Vinícius Vaz, Gel'mukhanov Faris, Ertan Emelie, Ignatova Nina, Polyutov Sergey, Couto Rafael C., Fondell Mattis, Dantz Marcus, Kennedy Brian, Schmitt Thorsten, Pietzsch Annette, Odelius Michael, Föhlisch Alexander (2018), One-dimensional cuts through multidimensional potential-energy surfaces by tunable x rays, in Physical Review A, 97(5), 053410-053410.
Spin-Orbital Excitations in Ca2RuO4 Revealed by Resonant Inelastic X-Ray Scattering
Das L., Forte F., Fittipaldi R., Fatuzzo C. G., Granata V., Ivashko O., Horio M., Schindler F., Dantz M., Tseng Yi, McNally D. E., Rønnow H. M., Wan W., Christensen N. B., Pelliciari J., Olalde-Velasco P., Kikugawa N., Neupert T., Vecchione A., Schmitt T., Cuoco M., Chang J. (2018), Spin-Orbital Excitations in Ca2RuO4 Revealed by Resonant Inelastic X-Ray Scattering, in Physical Review X, 8(1), 011048-011048.
Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K -edge resonant inelastic x-ray scattering
Lu Xingye, Olalde-Velasco Paul, Huang Yaobo, Bisogni Valentina, Pelliciari Jonathan, Fatale Sara, Dantz Marcus, Vale James G., Hunter E. C., Chang Johan, Strocov Vladimir N., Perry R. S., Grioni Marco, McMorrow D. F., Rønnow Henrik M., Schmitt Thorsten (2018), Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K -edge resonant inelastic x-ray scattering, in Physical Review B, 97(4), 041102-041102.
Ultrafast dissociation features in RIXS spectra of the water molecule
Ertan Emelie, Savchenko Viktoriia, Ignatova Nina, Vaz da Cruz Vinícius, Couto Rafael C., Eckert Sebastian, Fondell Mattis, Dantz Marcus, Kennedy Brian, Schmitt Thorsten, Pietzsch Annette, Föhlisch Alexander, Gel'mukhanov Faris, Odelius Michael, Kimberg Victor (2018), Ultrafast dissociation features in RIXS spectra of the water molecule, in Physical Chemistry Chemical Physics, 20(21), 14384-14397.
Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-Ray Scattering
Minola M., Lu Y., Peng Y. Y., Dellea G., Gretarsson H., Haverkort M. W., Ding Y., Sun X., Zhou X. J., Peets D. C., Chauviere L., Dosanjh P., Bonn D. A., Liang R., Damascelli A., Dantz M., Lu X., Schmitt T., Braicovich L., Ghiringhelli G., Keimer B., Le Tacon M. (2017), Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-Ray Scattering, in Physical Review Letters, 119(9), 097001-097001.
Zone plates as imaging analyzers for resonant inelastic x-ray scattering
Marschall Felix, McNally Daniel, Guzenko Vitaliy A., Rösner Benedikt, Dantz Marcus, Lu Xingye, Nue Leonard, Strocov Vladimir, Schmitt Thorsten, David Christian (2017), Zone plates as imaging analyzers for resonant inelastic x-ray scattering, in Optics Express, 25(14), 15624-15624.
Damped spin excitations in a doped cuprate superconductor with orbital hybridization
Ivashko O., Shaik N. E., Lu X., Fatuzzo C. G., Dantz M., Freeman P. G., McNally D. E., Destraz D., Christensen N. B., Kurosawa T., Momono N., Oda M., Matt C. E., Monney C., Rønnow H. M., Schmitt T., Chang J. (2017), Damped spin excitations in a doped cuprate superconductor with orbital hybridization, in Physical Review B, 95(21), 214508-214508.
Resonant inelastic x-ray scattering study of spin-wave excitations in the cuprate parent compound Ca2CuO2Cl2
Lebert B. W., Dean M. P. M., Nicolaou A., Pelliciari J., Dantz M., Schmitt T., Yu R., Azuma M., Castellan J.-P., Miao H., Gauzzi A., Baptiste B., d'Astuto M. (2017), Resonant inelastic x-ray scattering study of spin-wave excitations in the cuprate parent compound Ca2CuO2Cl2, in Physical Review B, 95(15), 155110-155110.
Local and collective magnetism of EuFe2As2
Pelliciari Jonathan, Ishii Kenji, Dantz Marcus, Lu Xingye, McNally Daniel E., Strocov Vladimir N., Xing Lingyi, Wang Xiancheng, Jin Changqing, Jeevan Hirale S., Gegenwart Philipp, Schmitt Thorsten (2017), Local and collective magnetism of EuFe2As2, in Physical Review B, 95(11), 115152-115152.
Doping dependence of the magnetic excitations in La2−xSrxCuO4
Meyers D., Miao H., Walters A. C., Bisogni V., Springell R. S., d'Astuto M., Dantz M., Pelliciari J., Huang H. Y., Okamoto J., Huang D. J., Hill J. P., He X., Božović I., Schmitt T., Dean M. P. M. (2017), Doping dependence of the magnetic excitations in La2−xSrxCuO4, in Physical Review B, 95(7), 075139-075139.
Selective gating to vibrational modes through resonant X-ray scattering
Couto Rafael C., Cruz Vinícius V., Ertan Emelie, Eckert Sebastian, Fondell Mattis, Dantz Marcus, Kennedy Brian, Schmitt Thorsten, Pietzsch Annette, Guimarães Freddy F., Ågren Hans, Gel’mukhanov Faris, Odelius Michael, Kimberg Victor, Föhlisch Alexander (2017), Selective gating to vibrational modes through resonant X-ray scattering, in Nature Communications, 8, 14165-14165.
A study of the water molecule using frequency control over nuclear dynamics in resonant X-ray scattering
Vaz da Cruz Vinícius, Ertan Emelie, Couto Rafael C., Eckert Sebastian, Fondell Mattis, Dantz Marcus, Kennedy Brian, Schmitt Thorsten, Pietzsch Annette, Guimarães Freddy F., Ågren Hans, Gel'mukhanov Faris, Odelius Michael, Föhlisch Alexander, Kimberg Victor (2017), A study of the water molecule using frequency control over nuclear dynamics in resonant X-ray scattering, in Physical Chemistry Chemical Physics, 19(30), 19573-19589.
A Mott insulator continuously connected to iron pnictide superconductors
Song Yu, Yamani Zahra, Cao Chongde, Li Yu, Zhang Chenglin, Chen Justin S., Huang Qingzhen, Wu Hui, Tao Jing, Zhu Yimei, Tian Wei, Chi Songxue, Cao Huibo, Huang Yao-Bo, Dantz Marcus, Schmitt Thorsten, Yu Rong, Nevidomskyy Andriy H., Morosan Emilia, Si Qimiao, Dai Pengcheng (2016), A Mott insulator continuously connected to iron pnictide superconductors, in Nature Communications, 7(1), 13879-13879.
Electron-lattice interactions strongly renormalize the charge-transfer energy in the spin-chain cuprate Li2CuO2
Johnston Steve, Monney Claude, Bisogni Valentina, Zhou Ke-Jin, Kraus Roberto, Behr Günter, Strocov Vladimir N., Málek Jiři, Drechsler Stefan-Ludwig, Geck Jochen, Schmitt Thorsten, van den Brink Jeroen (2016), Electron-lattice interactions strongly renormalize the charge-transfer energy in the spin-chain cuprate Li2CuO2, in Nature Communications, 7, 10563-10563.
Intralayer doping effects on the high-energy magnetic correlations in NaFeAs
Pelliciari Jonathan, Huang Yaobo, Das Tanmoy, Dantz Marcus, Bisogni Valentina, Velasco Paul Olalde, Strocov Vladimir N., Xing Lingyi, Wang Xiancheng, Jin Changqing, Schmitt Thorsten (2016), Intralayer doping effects on the high-energy magnetic correlations in NaFeAs, in Physical Review B, 93(13), 134515.
Presence of magnetic excitations in SmFeAsO
Pelliciari Jonathan, Dantz Marcus, Huang Yaobo, Strocov Vladimir N., Xing Lingyi, Wang Xiancheng, Jin Changqing, Schmitt Thorsten (2016), Presence of magnetic excitations in SmFeAsO, in Applied Physics Letters, 109(12), 122601-122601.
Probing inter- and intrachain Zhang-Rice excitons in Li2CuO2 and determining their binding energy
Monney Claude, Bisogni Valentina, Zhou Ke-Jin, Kraus Roberto, Strocov Vladimir N., Behr Günter, Drechsler Stefan-Ludwig, Rosner Helge, Johnston Steve, Geck Jochen, Schmitt Thorsten (2016), Probing inter- and intrachain Zhang-Rice excitons in Li2CuO2 and determining their binding energy, in Physical Review B, 94(16), 165118.
Quenched Magnon excitations by oxygen sublattice reconstruction in (SrCuO2)n/(SrTiO3)2 superlattices
Dantz M., Pelliciari J., Samal D., Bisogni V., Huang Y., Olalde-Velasco P., Strocov V. N., Koster G., Schmitt T. (2016), Quenched Magnon excitations by oxygen sublattice reconstruction in (SrCuO2)n/(SrTiO3)2 superlattices, in Scientific Reports, 6, 32896-32896.
Correlation of the superconducting critical temperature with spin and orbital excitations in (CaxLa1−x)(Ba1.75−xLa0.25+x)Cu3Oy as measured by resonant inelastic x-ray scattering
Ellis David Shai, Huang Yao-Bo, Olalde-Velasco Paul, Dantz Marcus, Pelliciari Jonathan, Drachuck Gil, Ofer Rinat, Bazalitsky Galina, Berger Jorge, Schmitt Thorsten, Keren Amit (2015), Correlation of the superconducting critical temperature with spin and orbital excitations in (CaxLa1−x)(Ba1.75−xLa0.25+x)Cu3Oy as measured by resonant inelastic x-ray scattering, in Physical Review B, 92(10), 104507-104507.
Spin-orbit-induced orbital excitations in Sr2RuO4 and Ca2RuO4 : A resonant inelastic x-ray scattering study
Fatuzzo C. G., Dantz M., Fatale S., Olalde-Velasco P., Shaik N. E., Dalla Piazza B., Toth S., Pelliciari J., Fittipaldi R., Vecchione A., Kikugawa N., Brooks J. S., Rønnow H. M., Grioni M., Rüegg Ch., Schmitt T., Chang J. (2015), Spin-orbit-induced orbital excitations in Sr2RuO4 and Ca2RuO4 : A resonant inelastic x-ray scattering study, in Physical Review B, 91(15), 155104-155104.
Magnons in tetragonal CuO
Moser S., Shaik N. E., Samal D., Fatale S., Dalla Piazza B., Dantz M., Pelliciari J., Olalde-Velasco P., Schmitt T., Koster G., Mila F., Rønnow H. M., Grioni M. (2015), Magnons in tetragonal CuO, in Physical Review B, 92(14), 140404(R).
Orbital Control of Effective Dimensionality: From Spin-Orbital Fractionalization to Confinement in the Anisotropic Ladder System CaCu2O3
Bisogni Valentina, Wohlfeld Krzysztof, Nishimoto Satoshi, Monney Claude, Trinckauf Jan, Zhou Kejin, Kraus Roberto, Koepernik Klaus, Sekar Chinnathambi, Strocov Vladimir, Büchner Bernd, Schmitt Thorsten, van den Brink Jeroen, Geck Jochen (2015), Orbital Control of Effective Dimensionality: From Spin-Orbital Fractionalization to Confinement in the Anisotropic Ladder System CaCu2O3, in Physical Review Letters, 114(9), 096402.
Femtosecond Dynamics of Momentum-Dependent Magnetic Excitations from Resonant Inelastic X-Ray Scattering in CaCu2O3
Bisogni Valentina, Kourtis Stefanos, Monney Claude, Zhou Kejin, Kraus Roberto, Sekar Chinnathambi, Strocov Vladimir, Büchner Bernd, van den Brink Jeroen, Braicovich Lucio, Schmitt Thorsten, Daghofer Maria, Geck Jochen (2014), Femtosecond Dynamics of Momentum-Dependent Magnetic Excitations from Resonant Inelastic X-Ray Scattering in CaCu2O3, in Physical Review Letters, 112(14), 147401.

Collaboration

Group / person Country
Types of collaboration
Prof. Dr. Henrik Ronnow, EPFL Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Dr. Philip Aebi, Univeryity of Fribourg Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Steven Johnston, Department of Physics and Astronomy, University of Tennessee United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
MaNEP Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. Krzysztof Wohlfeld, Institute of Theoretical Physics, University of Warsaw Poland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
SPS Annual Meeting 2016 Talk given at a conference Disentangling orbital and magnetic contributions to the exotic Spin Peierls transition in TiPO4 23.08.2016 Lugano, Switzerland Dantz Marcus;
2nd Workshop on Soft X-Ray Science Opportunities Using Diffraction Limited Storage Rings Talk given at a conference Momentum Resolved Resonant Inelastic X-Ray Scattering on Correlated Electron Materials 17.08.2016 Hefei, China Schmitt Thorsten;
VUVX-2016, International Conference on Vacuum Ultraviolet and X-ray Physics Talk given at a conference Disentangling orbital and magnetic contributions to the exotic Spin Peierls transition in TiPO4 03.07.2016 Zürich, Switzerland Dantz Marcus;
VUVX-2016, International Conference on Vacuum Ultraviolet and X-ray Physics Poster Dependence of the coupled spin and orbital dynamics on doped magnetic impurities in a cuprate spin chain 03.07.2016 Zürich, Switzerland Dantz Marcus;
Workshop on Resonant Inelastic and Elastic X-Ray Scattering 2016 Talk given at a conference Disentangling orbital and magnetic contributions to the exotic Spin Peierls transition in TiPO4 30.06.2016 Dresden, Germany Dantz Marcus;
MAX-IV User Meeting 2015 Talk given at a conference Momentum Resolved Resonant Inelastic X-Ray Scattering on Correlated Electron Materials 22.09.2015 Lund, Sweden Schmitt Thorsten;
Symposium "Low dimensional order mediated by interfaces" Talk given at a conference Resonant Inelastic X-Ray Scattering on One-Dimensional Cuprate and Oxide Heterostructure Materials 07.04.2015 Hannover, Germany Schmitt Thorsten;
DPG Fruehjahrstagung 2015 Talk given at a conference Quenched Magnon dispersion by oxygen sublatice reconstruction in SrCuO2/SrTiO3 superlattices 15.03.2015 Berlin, Germany Dantz Marcus;
Quantum and Dirac Materials for Energy Applications conference (QDM-2015) Talk given at a conference Resonant Inelastic X-Ray Scattering on One-Dimensional Cuprate and Oxide Heterostructure Materials 08.03.2015 Santa Fe, NM, United States of America Schmitt Thorsten;
SLS Symposium on Correlated Electron Systems Individual talk Quenched long range magnetic excitations by oxygen sub-lattice reconstruction in SrCuO2 thin films 10.02.2015 Villigen PSI, Switzerland Dantz Marcus;
SUCCESS-2014: School on UV and X-ray spectroscopies of correlated electron systems Talk given at a conference Quenched Magnon dispersion by oxygen sublatice reconstruction in SrCuO2/SrTiO3 superlattices 01.09.2014 Les Houches, France Dantz Marcus;
PSI Summer School on Condensed Matter Research (13th edition) Poster Quenched Magnon dispersion by oxygen sublatice reconstruction in SrCuO2/SrTiO3 superlattices 09.08.2014 Zug, Switzerland Dantz Marcus;
SPS Annual Meeting 2014 Talk given at a conference Quenched Magnon dispersion by oxygen sublatice reconstruction in SrCuO2/SrTiO3 superlattices 30.06.2014 Fribourg, Switzerland Dantz Marcus;
Meeting on Opportunities for Resonant Inelastic X-ray Scattering at the European XFEL Talk given at a conference Momentum dependent soft X-ray RIXS on correlated electron materials 16.05.2014 University College London, London Centre for Nanotechnology, London, Great Britain and Northern Ireland Schmitt Thorsten;


Awards

Title Year
Chorafas-Preis, Universität Freiburg 2018

Associated projects

Number Title Start Funding scheme
178867 Electron-Phonon Interactions in Rare-Earth Nickelates and Superconducting Cuprates 01.10.2018 Project funding (Div. I-III)
141962 Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials 01.01.2013 Sinergia
160765 Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials 01.01.2016 Sinergia

Abstract

Resonant inelastic x-ray scattering (RIXS) has been subject to tremendous developments in the last 2 years and is now a most powerful momentum resolved probe for spin, charge and orbital excitations in transition metal oxides. There is only one other experimental method that provides access to the dispersion of collective charge density excitations in these materials, namely electron-energy loss spectroscopy (EELS). However, these two methods have interesting and important complementary aspects: While RIXS enables to probe magnetic and orbital excitations with outstanding sensitivity, EELS is ideally suited for studies of charge transfer excitations and plasmons.The idea of this project is to combine the new capabilities of RIXS with EELS and theory into a novel, comprehensive approach for the study of the elementary excitations of correlated electron materials. This new approach will be applied to low-dimensional cuprates, which constitute well-defined model-systems of large scientific relevance. There are two major goals: The first one is to establish the approach and its methodology by studying model materials allowing for a thorough theoretical analysis, as for such systems the description of RIXS and EELS is well-controlled. By improving the RIXS data analysis, this is bound to yield new information on the elementary excitations and the coupling between them in these low dimensional model cuprates. This will then pave the way to the second goal of this project, which is to use this approach to study new cuprate materials. Specifically, we propose to investigate cuprate compounds that are promising one-dimensional quantum spin-liquids and new multiple-leg ladder systems. Employing this unique combination of methods, we aim to gain new key insights into the collective spin, charge and orbital dynamics of these novel materials, which are inaccessible at present and which cannot be achieved otherwise.For this joined research effort two worldwide leading experimental facilities are available: the RIXS facility of the PSI Villigen and the transmission EELS of the IFW Dresden. The proposed close collaboration of PSI Villigen and IFW Dresden will bring together the experimental and theoretical expertise of both institutes and will yield significantly increased impact as compared to studies of a single team alone.
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