0000000001305606

AUTHOR

K. Medjanik

showing 6 related works from this author

Exchange Splitting of a Hybrid Surface State and Ferromagnetic Order in a 2D Surface Alloy

2019

Surface alloys are highly flexible materials for tailoring the spin-dependent properties of surfaces. Here, we study the spin-dependent band structure of a DyAg$_2$ surface alloy formed on an Ag(111) crystal. We find a significant exchange spin-splitting of the localized Dy 4f states pointing to a ferromagnetic coupling between the localized Dy moments at $40\,$K. The magnetic coupling between these moments is mediated by an indirect, RKKY-like exchange coupling via the spin-polarized electrons of the hole-like Dy-Ag hybrid surface state.

Physics::Fluid DynamicsCondensed Matter - Mesoscale and Nanoscale PhysicsMesoscale and Nanoscale Physics (cond-mat.mes-hall)FOS: Physical sciencesCondensed Matter::Strongly Correlated Electrons
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Exchange coupling in the correlated electronic states of amorphous GdFe films

2013

The bulk sensitivity of hard x-ray photoelectron spectroscopy in combination with circularly polarized radiation of the P09 beamline at PETRA III enables the investigation of the magnetic properties of capped films. We have determined the temperature dependence of the magnetic circular dichroism in the Fe 2$p$ and in the Gd 3$d$ states in amorphous GdFe films. The magnetic dichroism reflects the stronger temperature dependence of Gd moments compared to Fe moments in agreement with mean-field models. We resolved the exchange split Gd 3${d}_{5/2}$ substates and found a significant temperature dependence of the splitting which is attributed to a temperature dependent part of the exchange energ…

Circular dichroismMaterials scienceCondensed matter physicsAbsorption spectroscopySpin polarizationPHOTOELECTRON-SPECTROSCOPYSPIN POLARIZATIONVALENCE STATESMagnetic circular dichroismExchange interactionCORE-LEVEL PHOTOEMISSIONLOCALIZED MAGNETIC SYSTEMSDichroismCondensed Matter PhysicsMAGNETOOPTICAL PROPERTIESX-RAY DICHROISMElectronic Optical and Magnetic MaterialsAmorphous solidCIRCULAR-DICHROISMANGULAR-DISTRIBUTIONX-ray photoelectron spectroscopyddc:530TRANSITION-METAL ALLOYS
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CCDC 1434832: Experimental Crystal Structure Determination

2017

Related Article: A. Chernenkaya, A. Morherr, S. Backes, W. Popp, S. Witt, X. Kozina, S. A. Nepijko, M. Bolte, K. Medjanik, G. Öhrwall, C. Krellner, M. Baumgarten, H. J. Elmers, G. Schönhense, H. O. Jeschke, R. Valentí|2016|J.Chem.Phys.|145|034702|doi:10.1063/1.4958659

dithieno[23-d;2'3'-d']benzo[12-b;45-b']dithiophene tetracyanoquinodimethaneSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1434834: Experimental Crystal Structure Determination

2017

Related Article: A. Chernenkaya, A. Morherr, S. Backes, W. Popp, S. Witt, X. Kozina, S. A. Nepijko, M. Bolte, K. Medjanik, G. Öhrwall, C. Krellner, M. Baumgarten, H. J. Elmers, G. Schönhense, H. O. Jeschke, R. Valentí|2016|J.Chem.Phys.|145|034702|doi:10.1063/1.4958659

Space GroupCrystallographyCrystal Systemdithieno[23-d;2'3'-d']benzo[12-b;45-b']dithiopheneCrystal StructureCell ParametersExperimental 3D Coordinates
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CCDC 1434833: Experimental Crystal Structure Determination

2017

Related Article: A. Chernenkaya, A. Morherr, S. Backes, W. Popp, S. Witt, X. Kozina, S. A. Nepijko, M. Bolte, K. Medjanik, G. Öhrwall, C. Krellner, M. Baumgarten, H. J. Elmers, G. Schönhense, H. O. Jeschke, R. Valentí|2016|J.Chem.Phys.|145|034702|doi:10.1063/1.4958659

Space GroupCrystallographyCrystal SystemCrystal StructureCell Parametersdithieno[23-d;2'3'-d']benzo[12-b;45-b']dithiophene tetrafluorotetracyanoquinodimethaneExperimental 3D Coordinates
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CSD 1790397: Experimental Crystal Structure Determination

2016

Related Article: S. Sofronova, E. Moshkina, I. Nazarenko, Yu. Seryotkin, S.A. Nepijko, V. Ksenofontov, K. Medjanik, A. Veligzhanin, L. Bezmaternykh|2016|J.Magn.Magn.Mater.|420|309|doi:10.1016/j.jmmm.2016.07.019

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates
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