Interface Induced Electronic States in Correlated Matter

P. Gegenwart, R. Pentcheva

Publications

  • Manish Verma, Rossitza Pentcheva, Metal-insulator transition and robust thermoelectricity via strain-tuned interplay between structural and electronic properties in (SrVO3)1/(SrTiO3)1(001) superlattices, Phys. Rev. Research 4, 033013, (2022) [G3,G8]
  • Padma Radhakrishnan, Benjamin Geisler, Katrin Fuersich, Daniel Putzky, Y. Wang, Georg Christiani, Gennadi Logvenov, Peter Wochner, P. A. van Aken, Rossitza Pentcheva, Eva Benckiser, Coupling of electronic and structural degrees of freedom in vanadate superlattices, Phys. Rev. B 105, 165117 (2022) [G3,G1]
  • Roberto Di Capua, Manish Verma, Milan Radovic, Vladimir Strokov, Cinthia Piamonteze, Eduardo Bonini Guedes, Nicholas Clark Plumb, Chen Yu, Maria D Antuono, Gabriella Maria De Luca, Emiliano Di Gennaro, Daniela Stornaiuolo, Daniele Preziosi, Benoit Jouault, Fabio Miletto Granozio, Alessia Sambri, Rossitza Pentcheva, Giacomo Ghiringhelli, Marco Salluzzo, Orbital selective switching of ferromagnetism in an oxide quasi two-dimensional electron gas, Npj Quantum Mater. 7, 41 (2022) [G3]
  • J. Wu, M. Zöllner, S. Esser, V. Begum, G. Prinz, A. Lorke, P. Gegenwart, R. Pentcheva, Electronic reconstruction and charge transfer in strained Sr2CoIrO6 double perovskite, Phys. Rev. B 104, 205126 (2021) [G3]
  • Roberto Di Capua, Manish Verma, Milan Radovic, Nicholas Clark Plumb, Jan Hugo Dil, Zoran Ristic, Eduardo Bonini Guedes, Gabriella Maria De Luca, Daniele Preziosi, Zhentian Wang, Andrew P. Weber, Rossitza Pentcheva, Marco Salluzzo, A two-dimensional electron gas at the (001) surface of ferromagnetic EuTiO$_3$, Phys. Rev. Research 3, L042038 (2021) [G3]
  • Benjamin Geisler, Rossitza Pentcheva, Correlated interface electron gas in infinite-layer nickelate versus cuprate films on SrTiO$_3$(001), Phys. Rev. Research 3, 013261, (2021) [G3]
  • Padma Radhakrishnan, Benjamin Geisler, Katrin Fuersich, Daniel Putzky, Y Wang, Sven Erik Ilse, Georg Christiani, Gennadi Logvenov, Peter Wochner, P. A. van Aken, Eberhard Goering, Rossitza Pentcheva, Eva Benckiser, Orbital engineering in YVO$_3$-LaAlO$_3$ superlattices, Phys. Rev. B 104, L121102, (2021) [G3,G1]
  • Sven Esser, S. Esser, R. Gruhl, A. Jesche, V. Roddatis, V. Moshnyaga, R. Pentcheva, P. Gegenwart, J. Wu, Angular dependence of Hall effect and magnetoresistance in SrRuO$_3$-SrIrO$_3$ heterostructures, Phys. Rev. B 103, 214430 (2021) [G3]
  • O. Köksal, R. Pentcheva, Chern insulating phases and thermoelectric properties of EuO/MgO(001) superlattices, Phys. Rev. B 103, 045135, (2021) [G3,G8]
  • S. S. Hong, M. Gu, M. Verma, V. Harbola, B. Y. Wang, D. Lu, A. Vailionis, Y. Hikita, R. Pentcheva, J. Rondinelli, H.Y. Hwang, Extreme tensile strain states in La$_{0.7}$Ca$_{0.3}$MnO$_3$ membranes, Science 368, 71 (2020) [G3]
  • B. Geisler, R. Pentcheva, Fundamental difference in the electronic reconstruction of infinite-layer vs. perovskite neodymium nickelate films on SrTiO$_3$(001), Phys. Rev. B 102, 020502(R) (2020) [G3]
  • B. Geisler, R. Pentcheva, Competition of defect ordering and site disproportionation in strained LaCoO$_3$ on SrTiO$_3$(001), Phys. Rev. B 101, 165108 (2020) [G3,G8]
  • Okan Köksal, R. Pentcheva, Interaction-driven spin-orbit effects and Chern insulating phases in corundum-based 4d and 5d oxide honeycomb lattices, J. Phys. Chem. Solids 128, 301 (2019) [G3]
  • Okan Köksal, R. Pentcheva, Chern and Z2 topological insulating phases in perovskite-derived 4d and 5d oxide buckled honeycomb lattices, Sci. Rep. 9, 17306 (2019) [G3]
  • A. Arab, X. Liu, O. Koeksal, R. Pentcheva, et al., Electronic structure of a graphene-like artificial crystal of NdNiO$_3$, Nano Letter 19, 8311 (2019) [G3]
  • Michael J. Veit, M. K. Chan, B.J. Ramshaw, R. Arras, R. Pentcheva, Yuri Suzuki, Three-dimensional character of the Fermi surface in ultrathin LaTiO$_3$/SrTiO$_3$ heterostructures, Phys. Rev. B 99, 115126 (2019) [G3]
  • G. Singh-Bhalla, P. B. Rossen, G. K. Pálsson, M. Mecklenburg, T. Orvis, S. Das, Y. Tang, J. S. Suresha, D. Yi, A. Dasgupta, David Doennig, V. G. Ruiz, R. Yadav, M. Trassin, J. T. Heron, C. S. Fadley, R. Pentcheva, J. Ravichandran, R. Ramesh, Unexpected termination switching and polarity compensation in LaAlO$_3$/SrTiO$_3$ heterostructures, Phys. Rev. Mater 2, 112001 (2018) [G3]
  • F. Wrobel, B. Geisler, Y. Wang, G. Christiani, G Logvenov, M. Bluschke, E. Schierle, P. A. van Aken, B. Keimer, R. Pentcheva, E. Benckiser, Digital modulation of the nickel valence state in a cuprate-nickelate heterostructure, Phys. Rev. Materials 2, 035001 (2018) [G8,G1,G3]
  • Benjamin Geisler, Rossitza Pentcheva, Confinement- and strain-induced enhancement of thermoelectric properties in LaNiO$_3$/LaAlO$_3$ (001) superlattices, Phys. Rev. Materials 2, 055403 (2018) [G3,G8]
  • Michael J. Veit, Rémi Arras, B.J. Ramshaw, Rossitza Pentcheva, Yuri Suzuki, Nonzero Berry phase in quantum oscillations from giant Rashba-type spin splitting in LaTiO$_3$/SrTiO$_3$ heterostructures, Nat. Commun 9, 1458, (2018) [G3]
  • Warren E. Pickett, K.-W. Lee, Rossitza Pentcheva, Design of Chern insulating phases in honeycomb lattices, hysica C: Superconductivity and its Applications 549, 99-101 (2018) [G3]
  • Okan Köksal, Rossitza Pentcheva, Confinement-driven electronic and topological phases in corundum-derived 3d-oxide honeycomb lattices, Phys. Rev. B 97, 035126, (2018) [G3]
  • S. Esser, C.F. Chang, C.-Y. Kuo, S. Merten, V. Roddatis, T.D. Ha, A. Jesche, V. Moshnyaga, H.-J. Lin, A. Tanaka, C.T. Chen, L.H. Tjeng, P. Gegenwart, Strain-induced changes of the electric properties of B-site ordered double-perovskite Sr$_2$CoIrO$_6$ thin films, Phys. Rev. B 97, 205121 (2018) [G3]

Short Summary

Combining material-specific density functional theory calculations and state-of-the-art experimental thin film growth and characterization techniques, our objective is to achieve a fundamental understanding of the phenomena arising at complex transition metal oxide interfaces. We explore systematically the interplay between reduced dimensions, strain, electronic correlations and spin-orbit coupling in realizing topologically nontrivial electronic and magnetic states. %Combining material-specific density functional theory calculations and state-of-the-art experimental growth and characterization techniques, the objective of project project{G3} is to achieve a fundamental understanding of the phenomena arising at complex oxide interfaces and to explore systematically the interplay between reduced dimensions, strain, electronic correlation and spin-orbit coupling strength towards realizing topologically nontrivial electronic and magnetic states. To this end, the current focus on confined layers with honeycomb pattern in predominantly 3$d$ perovskite-derived superlattices will be extended to 4$d$ and 5$d$ systems. In particular, we will focus on SrIrO$_3$-based perovskite and double perovskite superlattices, corundum-derived superlattices, honeycomb and hyperhoneycomb Li$_2$IrO$_3$ and pyrochlore iridates.