R. Pentcheva

activity

19992026

most citedAvoiding the polarization catastrophe in LaAlO3 overlayers on SrTiO3(001) through a polar distortion

319 citations · 2.1k across the 65 of their papers we have counts for

collaborators

Showing cond-mat.str-elShow all

17 papers · 1 filter

cond-mat.str-el2023★ 1 cited

High Chern numbers in a perovskite-derived dice lattice (La $X$ O $_{3}$ ) $_{3}$ /(LaAlO $_{3}$ ) $_{3}$ (111) with $X =$ Ti, Mn and Co

Okan Köksal, L. L. Li, Rossitza Pentcheva

The dice lattice, containing a stack of three triangular lattices, has been proposed to exhibit nontrivial flat bands with nonzero Chern numbers, but unlike the honeycomb lattice i…

cond-mat.str-el2021★ 6 cited

Coupling of electronic and structural degrees of freedom in vanadate superlattices

P. Radhakrishnan, B. Geisler, K. Fürsich +8

Heterostructuring provides different ways to manipulate the orbital degrees of freedom and to tailor orbital occupations in transition metal oxides. However, the reliable predictio…

cond-mat.str-el2021★ 4 cited

Electronic reconstruction and charge transfer in strained Sr $_{2}$ CoIrO $_{6}$ double perovskite

Jiongyao Wu, Marcel Ney, Sebastian Esser +5

The electronic, magnetic and optical properties of the double perovskite Sr $_{2}$ CoIrO $_{6}$ (SCIO) under biaxial strain are explored in the framework of density functional theory (DFT…

cond-mat.str-el2021★ 9 cited

Angular dependence of Hall effect and magnetoresistance in SrRuO $_{3}$ -SrIrO $_{3}$ heterostructures

Sven Esser, Jiongyao Wu, Sebastian Esser +6

Perovskite SrRuO $_{3}$ is a prototypical itinerant ferromagnet which allows interface engineering of its electronic and magnetic properties. We report synthesis and investigation of…

cond-mat.str-el2020★ 8 cited

Chern insulating phases and thermoelectric properties of EuO/MgO(001) superlattices

Okan Köksal, Rossitza Pentcheva

The topological and thermoelectric properties of (EuO) $_{n}$ /(MgO) $_{m}$ (001) superlattices (SLs) are explored using density functional theory calculations including a Hubbard $U$ …

cond-mat.str-el2019

Chern and $Z_{2}$ topological insulating phases in perovskite-derived $4 d$ and $5 d$ oxide buckled honeycomb lattices

Okan Köksal, Rossitza Pentcheva

Based on density functional theory calculations including a Coulomb repulsion parameter $U$ , we explore the topological properties of (La $X$ O $_{3}$ ) $_{2}$ /(LaAlO $_{3}$ ) $_{4}$ (111) with $X=…

cond-mat.str-el2019

Role of the exchange-correlation functional on the structural, electronic and optical properties of cubic and tetragonal SrTiO $_{3}$ including many-body effects

Vijaya Begum, Markus Ernst Gruner, Rossitza Pentcheva

SrTiO $_{3}$ is a model perovskite compound with unique properties and technological relevance. At 105 K it undergoes a transition from a cubic to a tetragonal phase with characterist…

cond-mat.str-el2019★ 11 cited

Electronic structure of a graphene-like artificial crystal of $N d N i O_{3}$

Arian Arab, Xiaoran Liu, O. Köksal +14

Artificial complex-oxide heterostructures containing ultrathin buried layers grown along the pseudocubic [111] direction have been predicted to host a plethora of exotic quantum st…

cond-mat.str-el2018★ 2 cited

Interaction-driven spin-orbit effects and Chern insulating phases in corundum-based $4 d$ and $5 d$ oxide honeycomb lattices

Okan Köksal, Rossitza Pentcheva

Using density functional theory calculations with a Hubbard $U$ , we explore topologically nontrivial phases in $X_{2}$ O $_{3}$ honeycomb layers with $X =$ $4 d$ and $5 d$ cation inserted i…

cond-mat.str-el2017★ 27 cited

Digital modulation of the nickel valence state in a cuprate-nickelate heterostructure

F. Wrobel, B. Geisler, Y. Wang +8

Layer-by-layer oxide molecular beam epitaxy has been used to synthesize cuprate-nickelate multilayer structures of composition (La $_{2}$ CuO $_{4}$ ) $_{m}$ /LaO/(LaNiO $_{3}$ ) $_{n}$ . In a combine…

cond-mat.str-el2017★ 43 cited

Ordering tendencies and electronic properties in quaternary Heusler derivatives

Pascal Neibecker, Markus E. Gruner, Xiao Xu +4

The phase stabilities and ordering tendencies in the quaternary full-Heusler alloys NiCoMnAl and NiCoMnGa have been investigated by in-situ neutron diffraction, calorimetry and mag…

cond-mat.str-el2015★ 11 cited

Depth-Resolved Composition and Electronic Structure of Buried Layers and Interfaces in a LaNiO $_{3}$ /SrTiO $_{3}$ Superlattice from Soft- and Hard- X-ray Standing-Wave Angle-Resolved Photoemission

D. Eiteneer, G. K. Pálsson, S. Nemšák +21

LaNiO $_{3}$ (LNO) is an intriguing member of the rare-earth nickelates in exhibiting a metal-insulator transition for a critical film thickness of about 4 unit cells [Son et al., App…

cond-mat.str-el2015

Control of orbital reconstruction in (LaAlO $_{3}$ ) $_{M}$ /(SrTiO $_{3}$ ) $_{N}$ (001) quantum wells by strain and confinement

David Doennig, Rossitza Pentcheva

The diverse functionality emerging at oxide interfaces calls for a fundamental understanding of the mechanisms and control parameters of electronic reconstructions. Here, we explor…

cond-mat.str-el2014★ 53 cited

Mott Electrons in an Artificial Graphenelike Crystal of Rare-Earth Nickelate

S. Middey, D. Meyers, D. Doennig +10

Deterministic control over the periodic geometrical arrangement of the constituent atoms is the backbone of the material properties, that along with the interactions define the ele…

cond-mat.str-el2014★ 70 cited

Confinement-driven transitions between topological and Mott phases in (LaNiO3) $_{N}$ /(LaAlO3) $_{M}$ (111) superlattices

David Doennig, Warren E. Pickett, Rossitza Pentcheva

A set of broken symmetry two-dimensional ground states are predicted in (111)-oriented (LaNiO $_{3}$ ) $_{N}$ /(LaAlO $_{3}$ ) $_{M}$ ( $N$ / $M$ ) superlattices, based on density functional theory (…

cond-mat.str-el2013★ 90 cited

Massive symmetry breaking in LaAlO $_{3}$ /SrTiO $_{3}$ (111) quantum wells: a three-orbital, strongly correlated generalization of graphene

David Doennig, Warren E. Pickett, Rossitza Pentcheva

Density functional theory calculations with an on-site Coulomb repulsion term (GGA+U method) reveal competing ground states in (111) oriented (LaAlO $_{3}$ ) $_{M}$ /(SrTiO $_{3}$ ) $_{N}$ superl…

cond-mat.str-el2010★ 97 cited

Orbital control in strained ultra-thin LaNiO $_{3}$ /LaAlO $_{3}$ superlattices

J. W. Freeland, Jian Liu, M. Kareev +5

In pursuit of rational control of orbital polarization, we present a combined experimental and theoretical study of single unit cell superlattices of the correlated metal LaNiO $_{3}$ …

High Chern numbers in a perovskite-derived dice lattice (LaXO3​)3​/(LaAlO3​)3​(111) with X= Ti, Mn and Co

Coupling of electronic and structural degrees of freedom in vanadate superlattices

Electronic reconstruction and charge transfer in strained Sr2​CoIrO6​ double perovskite

Angular dependence of Hall effect and magnetoresistance in SrRuO3​-SrIrO3​ heterostructures

Chern insulating phases and thermoelectric properties of EuO/MgO(001) superlattices

Chern and Z2​ topological insulating phases in perovskite-derived 4d and 5d oxide buckled honeycomb lattices

Role of the exchange-correlation functional on the structural, electronic and optical properties of cubic and tetragonal SrTiO3​ including many-body effects

Electronic structure of a graphene-like artificial crystal of NdNiO3​

Interaction-driven spin-orbit effects and Chern insulating phases in corundum-based 4d and 5d oxide honeycomb lattices

Digital modulation of the nickel valence state in a cuprate-nickelate heterostructure

Ordering tendencies and electronic properties in quaternary Heusler derivatives

Depth-Resolved Composition and Electronic Structure of Buried Layers and Interfaces in a LaNiO3​/SrTiO3​ Superlattice from Soft- and Hard- X-ray Standing-Wave Angle-Resolved Photoemission

Control of orbital reconstruction in (LaAlO3​)M​/(SrTiO3​)N​(001) quantum wells by strain and confinement

Mott Electrons in an Artificial Graphenelike Crystal of Rare-Earth Nickelate

Confinement-driven transitions between topological and Mott phases in (LaNiO3)N​/(LaAlO3)M​(111) superlattices

Massive symmetry breaking in LaAlO3​/SrTiO3​(111) quantum wells: a three-orbital, strongly correlated generalization of graphene

Orbital control in strained ultra-thin LaNiO3​/LaAlO3​ superlattices

High Chern numbers in a perovskite-derived dice lattice (La $X$ O $_{3}$ ) $_{3}$ /(LaAlO $_{3}$ ) $_{3}$ (111) with $X =$ Ti, Mn and Co

Electronic reconstruction and charge transfer in strained Sr $_{2}$ CoIrO $_{6}$ double perovskite

Angular dependence of Hall effect and magnetoresistance in SrRuO $_{3}$ -SrIrO $_{3}$ heterostructures

Chern and $Z_{2}$ topological insulating phases in perovskite-derived $4 d$ and $5 d$ oxide buckled honeycomb lattices

Role of the exchange-correlation functional on the structural, electronic and optical properties of cubic and tetragonal SrTiO $_{3}$ including many-body effects

Electronic structure of a graphene-like artificial crystal of $N d N i O_{3}$

Interaction-driven spin-orbit effects and Chern insulating phases in corundum-based $4 d$ and $5 d$ oxide honeycomb lattices

Depth-Resolved Composition and Electronic Structure of Buried Layers and Interfaces in a LaNiO $_{3}$ /SrTiO $_{3}$ Superlattice from Soft- and Hard- X-ray Standing-Wave Angle-Resolved Photoemission

Control of orbital reconstruction in (LaAlO $_{3}$ ) $_{M}$ /(SrTiO $_{3}$ ) $_{N}$ (001) quantum wells by strain and confinement

Confinement-driven transitions between topological and Mott phases in (LaNiO3) $_{N}$ /(LaAlO3) $_{M}$ (111) superlattices

Massive symmetry breaking in LaAlO $_{3}$ /SrTiO $_{3}$ (111) quantum wells: a three-orbital, strongly correlated generalization of graphene

Orbital control in strained ultra-thin LaNiO $_{3}$ /LaAlO $_{3}$ superlattices