Business card

apl. Prof. Dr. Oliver Rader

apl. Prof. Dr. Oliver Rader

acting department head
Department Materials for green spintronics

Tel (030) 8062 - 12950 Fax (030) 8062-14980 mail rader@helmholtz-berlin.de

Publications

2016


Liebmann, M.; Rinaldi, C.; Di Sante, D.; Kellner, J.; Pauly, C.; Wang, R.N.; Boschker, J.E.; Giussani, A.; Bertoli, S.; Cantoni, M.; Baldrati, L.; Asa, M.; Vobornik, I.; Panaccione, G.; Marchenko, D.; Sánchez-Barriga, J.; Rader, O.; Calarco, R.; Picozzi, S.; Bertacco, R.; Morgenstern, M.: Giant Rashba-type spin splitting in ferroelectric GeTe(111). Advanced Materials 28 (2016), p. 560-565


Marchenko, D.; Varykhalov, A.; Sánchez-Barriga, J.; Seyller, Th.; Rader, O.: Rashba splitting of 100meV in Au-intercalated graphene on SiC. Applied Physics Letters 108 (2016), p. 172405/1-4


Sánchez-Barriga, J.; Golias, E.; Varykhalov, A.; Braun, J.; Yashina, L. V.; Schumann, R.; Minár, J.; Ebert, H.; Kornilov, O.; Rader, O.: Ultrafast spin-polarization control of Dirac fermions in topological insulators. Physical Review B 93 (2016), p. 155426/1-10


Sánchez-Barriga, J.; Varykhalov, A.; Springholz, G.; Steiner, H.; Kirchschlager, R.; Bauer, G.; Caha, O.; Schierle, E.; Weschke, E.; Uenal, A. A.; Valencia, S.; Dunst, M.; Braun, J.; Ebert, H.; Minar, J.; Golias, E.; Yashina, L.V.; Ney, A.; Holy, V.; Rader, O.: Nonmagnetic band gap at the Dirac point of the magnetic topological insulator (Bi1-xMnx)2Se3. Nature Communications 7 (2016), p. 10559/1-10

2015


Bihlmayer, G.; Rader, O.; Winkler, R.: Focus on the Rashba effect. New Journal of Physics 17 (2015), p. 050202/1-8


Kuznetsov, M.V.; Yashina, L.V.; Sánchez-Barriga, J.; Ogorodnikov, I.I.; Vorokh, A.S.; Volykhov, A.A.; Koch, R.J.; Neudachina, V.S.; Tamm, M.E.; Sirotina, A.P.; Varykhalov, A.; Springholz, G.; Bauer, G.; Riley, J.D.; Rader, O.: Atomic structure of Bi2Se3 and Bi2Te3 (111) surfaces probed by photoelectron diffraction and holography. Physical Review B 91 (2015), p. 085402/1-7


Marchenko, D.; Varykhalov, A.; Sanchez-Barriga, J.; Rader, O.; Carbone, C.; Bihlmayer, G.: Highly spin-polarized Dirac fermions at the graphene/Co interface. Physical Review B 91 (2015), p. 235431/1-5


Moras, P.; Bihlmayer, G.; Sheverdyaeva, P.M.; Mahatha, S.K.; Papagno, M.; Sanchez-Barriga, J.; Rader, O.; Novinec, L.; Gardonio, S.; Carbone, C.: Magnetization-dependent Rashba splitting of quantum well states at the Co/W interface. Physical Review B 91 (2015), p. 195410/1-8


Varykhalov, A.; Sanchez-Barriga, J.; Marchenko, D.; Hlawenka, P.; Mandal, P.S.; Rader, O.: Tunable Fermi level and hedgehog spin texture in gapped graphene. Nature Communications 6 (2015), p. 7610/1-6


Zhizhin, E.V.; Varykhalov, A.; Rybkin, A.G.; Rybkina, A.A.; Pudikov, D.A.; Marchenko, D.; Sanchez-Barriga, J.; Klimovskikh, I.I.; Vladimirov, G.G.; Rader, O.; Shikin, A.M.: Spin splitting of Dirac fermions in graphene on Ni intercalated with alloy of Bi and Au. Carbon 93 (2015), p. 984–996

2014


Bendt, G.; Zastrow, S.; Nielsch, K.; Mandal, P.S.; Sánchez-Barriga, J.; Rader, O.; Schulz, S.: Deposition of topological insulator Sb2Te3 films by an MOCVD process. Journal of Materials Chemistry A 2 (2014), p. 8215-8222


Neupane, M.; Richardella, A.; Sánchez-Barriga, J.; Xu, S.Y.; Alidoust, N.; Belopolski, I.; Liu, C.; Bian, G.; Zhang, D.; Marchenko, D.; Varykhalov, A.; Rader, O.; Leandersson, M.; Balasubramanian, T.; Chang, T.-R.; Jeng, H.-T.; Basak, S.; Lin, H.; Bansil, A.; Samarth, N.; Hasan, M.Z.: Observation of quantum-tunnelling-modulated spin texture in ultrathin topological insulator Bi2Se3 films. Nature Communications 5 (2014), p. 3841/1-7


Sánchez-Barriga, J.; Scholz, M.R.; Golias, E.; Rienks, E.; Marchenko, D.; Varykhalov, A.; Yashina, L.V.; Rader, O.: Anisotropic effect of warping on the lifetime broadening of topological surface states in angle-resolved photoemission from Bi2Te3. Physical Review B 90 (2014), p. 195413/1-11


Sánchez-Barriga, J.; Varykhalov, A.; Braun, J.; Xu, S.-Y.; Alidoust, N.; Kornilov, O.; Minar, J.; Hummer, K.; Springholz, G.; Bauer, G.; Schumann, R.; Yashina, L.V.; Ebert, H.; Hasan, M.Z.; Rader, O.: Photoemission of Bi2Se3 with Circularly Polarized Light: Probe of Spin Polarization or Means for Spin Manipulation? Physical Review X 4 (2014), p. 011046/1-10

2013


Caha, O.; Dubroka, A.; Humlícek, J.; Holý, V.; Steiner, H.; Ul-Hassan, M.; Sánchez-Barriga, J.; Rader, O.; Stanislavchuk, T.N.; Sirenko, A.A.; Bauer, G.; Springholz, G.: Growth, Structure, and Electronic Properties of Epitaxial Bismuth Telluride Topological Insulator Films on BaF2 (111) Substrates. Crystal Growth & Design 13 (2013), p. 3365-3373


Marchenko, D.; Sánchez-Barriga, J.; Scholz, M.R.; Rader, O.; Varykhalov, A.: Spin splitting of Dirac fermions in aligned and rotated graphene on Ir(111). Physical Review B 87 (2013), p. 115426/1-8


Marchenko, D.; Varykhalov, A.; Scholz, M.R.; Sánchez-Barriga, J.; Rader, O.; Rybkina, A.; Shikin, A.M.; Seyller, Th.; Bihlmayer, G.: Spin-resolved photoemission and ab initio theory of graphene/SiC. Physical Review B 88 (2013), p. 075422/1-5


Pauly, Ch.; Liebmann, M.; Giussani, A.; Kellner, J.; Just, S.; Sánchez-Barriga, J.; Rienks, E.; Rader, O.; Calarco, R.; Bihlmayer, G.; Morgenstern, M.: Evidence for topological band inversion of the phase change material Ge2Sb2Te5. Applied Physics Letters 103 (2013), p. 243109/1-4


Scholz, M.R.; Sánchez-Barriga, J.; Braun, J.; Marchenko, D.; Varykhalov, A.; Lindroos, M.; Wang, Yung Jui; Lin, Hsin; Bansil, A.; Minár, J.; Ebert, H.; Volykhov, A.; Yashina, L.V.; Rader, O.: Reversal of the Circular Dichroism in Angle-Resolved Photoemission from Bi2Te3. Physical Review Letters 110 (2013), p. 216801


Scholz, M.R.; Sánchez-Barriga, J.; Marchenko, D.; Varykhalov, A.; Volykhov, A.; Yashina, L.V.; Rader, O.: Intact Dirac cone of Bi2Te3 covered with a monolayer Fe. Physica Status Solidi - Rapid Research Letters 7 (2013), p. 139-141


Shikin, A.M.; Rybkin, A.G.; Marchenko, D.; Rybkina, A.A.; Scholz, M.R.; Rader, O.; Varykhalov, A.: Induced spin-orbit splitting in graphene: the role of atomic number of the intercalated metal and π-d hybridization. New Journal of Physics 15 (2013), p. 013016/1-18


Shikin, A.M.; Rybkina, A.A.; Korshunov, A.S.; Kudasov, Yu.B.; Frolova, N.V.; Rybkin, A.G.; Marchenko, D .; Sánchez-Barriga, J .; Varykhalov, A.; Rader, O.: Induced Rashba splitting of electronic states in monolayers of Au, Cu on a W(110) substrate. New Journal of Physics 15 (2013), p. 095005/1-22


Sánchez-Barriga, J.; Bihlmayer, G.; Wortmann, D .; Marchenko, D.; Rader, O.; Varykhalov, A.: Effect of structural modulation and thickness of a graphene overlayer on the binding energy of the Rashba-type surface state of Ir(111). New Journal of Physics 15 (2013), p. 115009/1-18


Yashina, L.V.; Sánchez-Barriga, J.; Scholz, M.R.; Volykhov, A.A.; Sirotina, A.P.; Neudachina, V.S.; Tamm, M.E.; Varykhalov, A.; Marchenko, D.; Springholz, G.; Bauer, G.; Knop-Gericke, A.; Rader, O.: Negligible Surface Reactivity of Topological Insulators Bi2Se3 and Bi2Te3 towards Oxygen and Water. ACS Nano 7 (2013), p. 5181-5191

2012


Pauly, C.; Bihlmayer, G.; Liebmann, M.; Grob, M.; Georgi, A.; Subramaniam, D.; Scholz, M.R.; Sánchez-Barriga, J.; Varykhalov, A.; Blügel, S.; Rader, O.; Morgenstern, M.: Probing two topological surface bands of Sb2Te3 by spin-polarized photoemission spectroscopy. Physical Review B 86 (2012), p. 235106/1-8


Rybkin, A.G.; Krasovskii, E.E.; Marchenko, D.; Chulkov, E.V.; Varykhalov, A.; Rader, O.; Shikin, A.M.: Topology of spin polarization of the 5d states on W(110) and Al/W(110) surfaces. Physical Review B 86 (2012), p. 035117/1-5


Rybkin, A.G.; Shikin, A.M.; Marchenko, D.; Varykhalov, A.; Rader, O.: Spin-dependent avoided-crossing effect on quantum-well states in Al/W(110). Physical Review B 85 (2012), p. 045425/1-7


Scholz, M.R.; Sánchez-Barriga, J.; Marchenko, D.; Varykhalov, A.; Volykhov, A.; Yashina, L.V.; Rader, O.: Tolerance of Topological Surface States towards Magnetic Moments: Fe on Bi2Se3. Physical Review Letters 108 (2012), p. 256810/1-5


Sánchez-Barriga, J.; Braun, J.; Minar, J.; Di Marco, I.; Varykhalov, A.; Rader, O.; Boni, V.; Bellini, V.; Manghi, F.; Ebert, H.; Katsnelson, M.I.; Lichtenstein, A.I.; Eriksson, O.; Eberhardt, W.; Dürr, H.A.; Fink, J.: Effects of spin-dependent quasiparticle renormalization in Fe, Co, and Ni photoemission spectra: An experimental and theoretical study. Physical Review B 85 (2012), p. 205109/1-15


Sánchez-Barriga, J.; Varykhalov, A.; Marchenko, D.; Scholz, M.R.; Rader, O.: Minigap isotropy and broken chirality in graphene with periodic corrugation enhanced by cluster superlattices. Physical Review B 85 (2012), p. 201413(R)/1-5


Varykhalov, A.; Marchenko, D.; Scholz, M.R.; Rienks, E.D.L.; Kim, T.K.; Bihlmayer, G.; Sánchez-Barriga, J.; Rader, O.: Ir(111) Surface State with Giant Rashba Splitting Persists under Graphene in Air. Physical Review Letters 108 (2012), p. 066804/1-5


Varykhalov, A.; Marchenko, D.; Sánchez-Barriga, J.; Scholz, M.R.; Verberck, B.; Trauzettel, B.; Wehling, T. O.; Carbone, C.; Rader, O.: Intact Dirac Cones at Broken Sublattice Symmetry: Photoemission Study of Graphene on Ni and Co. Physical Review X 2 (2012), p. 041017/1-10


Xu, S.-Y.; Neupane, M.; Liu, C.; Zhang, D.; Richardella, A.; Wray, L.A.; Alidoust, N.; Leandersson, M.; Balasubramanian, T.; Sánchez-Barriga, J.; Rader, O.; Landolt, G.; Slomski, B.; Dil, J.H.; Osterwalder, J.; Chang, T.-R.; Jeng, H.-T.; Lin, H.; Bansil, A.; Samarth, N.; Hasan, M.Z.: Hedgehog spin texture and Berry's phase tuning in a magnetic topological insulator. Nature Physics 8 (2012), p. 616-622

2011


Marchenko, D.; Varykhalov, A.; Rybkin, A.; Shikin, A.M.; Rader, O.: Atmospheric stability and doping protection of noble-metal intercalated graphene on Ni(111). Applied Physics Letters 98 (2011), p. 122111/1-4


Popova, A.A.; Shikin, A.M.; Rybkin, A.G.; Marchenko, D.E.; Vilkov, O.Yu.; Makarova, A.A.; Varykhalov, A.Yu.; Rader, O.: The role of the covalent interaction in the formation of the electronic structure of Au- and Cu-intercalated graphene on Ni(111). Physics of the Solid State 53 (2011), p. 2539-2544

2010


Carbone, C.; Veronese, M.; Moras, P.; Gardonio, S.; Grazioli, C.; Zhou, P.H.; Rader, O.; Varykhalov, A.; Krull, C.; Balashov, T.; Mugarza, A.; Gambardella, P.; Lebčgue, S.; Eriksson, O.; Katsnelson, M.I.; Lichtenstein, A.I.: Correlated Electrons Step by Step: Itinerant-to-Localized Transition of Fe Impurities in Free-Electron Metal Hosts. Physical Review Letters 104 (2010), p. 117601/1-4


Rybkin, A.G.; Shikin, A.M.; Adamchuk, V.K.; Marchenko, D.; Biswas, C.; Varykhalov, A.; Rader, O.: Large spin-orbit splitting in light quantum films: Al/W(110). Physical Review B 82 (2010), p. 233403/1-4


Rybkin, A.G.; Usachov, D.Y.; Marchenko, D.E.; Shikin, A.M.; Adamchuk, V.K.; Varykhalov, A.Y.; Rader, O.: Formation of spectra of quantum well states in thin Al layers on W(110). Journal of Surface Investigation 4 (2010), p. 401-404


Shikin, A.M.; Rybkin, A.G.; Marchenko, D.E.; Usachov, D.Y.; Adamchuk, V.K.; Varykhalov, A.Y.; Rader, O.: Substrate-induced spin-orbit splitting of quantum-well and interface states in Au, Ag, and Cu layers of different thicknesses on W(110) and Mo(110) surfaces. Physics of the Solid State 52 (2010), p. 1515-1525


Shikin, A.M.; Rybkin, A.G.; Marchenko, D.E.; Usachov, D.Y.; Adamchuk, V.K.; Varykhalov, A.Y.; Rader, O.: Substrate-induced spin-orbit splitting of quantum-well and interface states in Au, Ag, and Cu layers of different thicknesses on W(110) and Mo(110) surfaces. Physics of the Solid State 52 (2010), p. 1515-1525


Sánchez-Barriga, J.; Minar, J.; Braun, J.; Varykhalov, A.; Boni, V.; Di Marco, I.; Rader, O.; Bellini, V.; Manghi, F.; Ebert, H.; Katsnelson, M.I.; Lichtenstein, A.I.; Eriksson, O.; Eberhardt, W.; Dürr, H.A.; Fink, J.: Quantitative determination of spin-dependent quasiparticle lifetimes and electronic correlations in hcp cobalt. Physical Review B 82 (2010), p. 104414/1-12


Sánchez-Barriga, J.; Varykhalov, A.; Scholz, M.R.; Rader, O.; Marchenko, D.; Rybkin, A.; Shikin, A.M.; Vescovo, E.: Chemical vapour deposition of graphene on Ni(111) and Co(0001) and intercalation with Au to study Dirac-cone formation and Rashba splitting. Diamond and Related Materials 19 (2010), p. 734-741


Varykhalov, A.; Gudat, W.; Rader, O.: Imaging Buried Molecules: Fullerenes Under Graphene. Advanced Materials 22 (2010), p. 3307-3310


Varykhalov, A.; Scholz, M.R.; Kim, T.K.; Rader, O.: Effect of noble-metal contacts on doping and band gap of graphene. Physical Review B 82 (2010), p. 121101(R)/1-4


Walter, A.L. ; Riley, J.D. ; Rader, O.: Theoretical limitations to the determination of bandwidth and electron mass renormalization: the case of ferromagnetic iron. New Journal of Physics 12 (2010), p. 013007/1-15

2009


Rader, O. ; Wolf, H. ; Gudat, W. ; Tadich, A. ; Broekman, L. ; Huwald, E. ; Leckey, R.C.G. ; Riley, J.D. ; Shikin, A.M. ; Matsui, F. ; Miyata, H. ; Daimon, H.: Apparent "three-dimensional" Fermi surface of transition-metal monolayers. PHYSICAL REVIEW B 79 (2009), p. 245104/1-6


Rader, O.; Valencia, S.; Gudat, W.; Edmonds, K.W.; Campion, R.P.; Gallagher, B.L.; Foxon, C.T.; Emtsev, K.V.; Seyller, Th.: Photoemission of Ga1-xMnxAs with high Curie temperature and transformation into MnAs of zincblende structure. Physica Status Solidi B 246 (2009), p. 1435-1439


Rader, O.; Varykhalov, A.; Sánchez-Barriga, J.; Marchenko, D.; Rybkin, A.; Shikin, A.M.: Is There a Rashba Effect in Graphene on 3d Ferromagnets? Physical Review Letters 102 (2009), p. 057602/1-4


Shikin, A.M.; Varykhalov, A.; Rader, O.; Adamchuk, V.K.; Gudat, W.: Quantum-size effects in the electronic structure of low-dimensional metallic systems. Appied Physics A 94 (2009), p. 449-453


Sánchez-Barriga, J.; Fink, J.; Boni, V.; Di Marco, I.; Braun, J.; Minar, J.; Varykhalov, A.; Rader, O.; Bellini, V.; Manghi, F.; Ebert, H.; Katsnelson, M.I.; Lichtenstein, A.I.; Eriksson, O.; Eberhardt, W.; Duerr, H.A.: Strength of Correlation Effects in the Electronic Structure of Iron. Physical Review Letters 103 (2009), p. 267203/1-4


Varykhalov, A. ; Rader, O.: Graphene grown on Co(0001) films and islands: Electronic structure and its precise magnetization dependence. PHYSICAL REVIEW B 80 (2009), p. 035437/1-6


Vinogradov, N.A.; Marchenko, D.E.; Shikin, A.M.; Adamchuk, V.K.; Rader, O.: Size Effects in Ultrathin Mg/W(110) Films: Quantum Electronic States. Physics of the Solid State 51 (2009), p. 179-188