163 citations · 599 across the 18 of their papers we have counts for
18 papers
Large Jahn-Teller shifts and splittings observed in halide perovskite CsPbBr3
Maryam Sajedi, Maxim Krivenkov, Dmitry Marchenko +7
Despite the fundamental role of Jahn-Teller effects of first and second order in shaping structural and electronic properties, there is hardly any observation in angle-resolved pho…
Three prerequisites for high-temperature superconductivity in t-PtBi
Andrii Kuibarov, Susmita Changdar, Riccardo Vocaturo +9
Although the generic mechanism behind high-temperature superconductivity remains notoriously elusive, a set of favorable conditions for its occurrence in a given material has emerg…
Halide Perovskites as Spin-1 Dirac Materials
Dmitry Marchenko, Maryam Sajedi, Maxim Krivenkov +8
Halide perovskites are a promising class of materials for optoelectronic and photovoltaic applications, exhibiting high power conversion efficiency due to strong light absorption a…
Strongly Anisotropic Spin and Orbital Rashba Effect at a Tellurium - Noble Metal Interface
B. Geldiyev, M. Ünzelmann, P. Eck +19
We study the interplay of lattice, spin and orbital degrees of freedom in a two-dimensional model system: a flat square lattice of Te atoms on a Au(100) surface. The atomic structu…
One-dimensional electronic structure of phosphorene chains
Maxim Krivenkov, Maryam Sajedi, Dmitry Marchenko +4
Phosphorene, a 2D allotrope of phosphorus, is technologically very appealing because of its semiconducting properties and narrow band gap. Further reduction of the phosphorene dime…
Colossal negative magnetoresistance in the complex charge density wave regime of an antiferromagnetic Dirac semimetal
Ratnadwip Singha, Kirstine J. Dalgaard, Dmitry Marchenko +10
Colossal magnetoresistance (MR) is a well-known phenomenon, notably observed in hole-doped ferromagnetic manganites. It remains a major research topic due to its potential in techn…
Suppression of nematicity by tensile strain in multilayer FeSe/SrTiO films
Rui Lou, Oleksandr Suvorov, Hans-Joachim Grafe +6
The nematicity in multilayer FeSe/SrTiO films has been previously suggested to be enhanced with decreasing film thickness. Motivated by this, there have been many discussions a…
Is there a polaron signature in angle-resolved photoemission of CsPbBr3?
Maryam Sajedi, Maxim Krivenkov, Dmitry Marchenko +7
The formation of large polarons has been proposed as reason for the high defect tolerance, low mobility, low charge carrier trapping and low nonradiative recombination rates of lea…
Observation of a singular Weyl point surrounded by charged nodal walls in PtGa
J. -Z. Ma, Q. -S. Wu, M. Song +17
Constrained by the Nielsen-Ninomiya no-go theorem, in all so-far experimentally determined Weyl semimetals (WSMs) the Weyl points (WPs) always appear in pairs in the momentum space…
Band Engineering of Dirac Semimetals using Charge Density Waves
Shiming Lei, Samuel M. L. Teicher, Andreas Topp +13
New developments in the field of topological matter are often driven by materials discovery, including novel topological insulators, Dirac semimetals and Weyl semimetals. In the la…
Dirac Fermions and Possible Weak Antilocalization in LaCuSb
J. R. Chamorro, A. Topp, Y. Fang +7
Layered heavy-metal square-lattice compounds have recently emerged as potential Dirac fermion materials due to bonding within those sublattices. We report quantum transport and spe…
Modular Arithmetic with Nodal Lines: Drumhead Surface States in ZrSiTe
Lukas Muechler, Andreas Topp, Raquel Queiroz +5
We study the electronic structure of the nodal line semimetal ZrSiTe both experimentally and theoretically. We find two different surface states in ZrSiTe - topological drumhead su…
Band renormalization of blue phosphorus on Au(111)
E. Golias, M. Krivenkov, A. Varykhalov +2
Most recently, theoretical calculations predicted the stability of a novel two-dimensional phosphorus honeycomb lattice named blue phosphorus. Here, we report on the growth of blue…
Quantum oscillations and Dirac dispersion in the BaZnBi2 semimetal guaranteed by local Zn vacancy order
K. Zhao, E. Golias, Q. H. Zhang +6
We have synthesized single crystals of Dirac semimetal candidates AZnBi2 with A=Ba and Sr. In contrast to A=Sr, the Ba material displays a novel local Zn vacancy ordering, which ma…
Surface floating 2D bands in layered nonsymmorphic semimetals: ZrSiS and related compounds
Andreas Topp, Raquel Queiroz, Andreas Grüneis +10
In this work, we present a model of the surface states of nonsymmorphic semimetals. These are derived from surface mass terms that lift the high degeneracy imposed in the band stru…
Suppression of electron scattering resonances in graphene by quantum dots
M. Krivenkov, D. Marchenko, J. Sánchez-Barriga +2
Transmission of low-energetic electrons through two-dimensional materials leads to unique scattering resonances. These resonances contribute to photoemission from occupied bands wh…
Tunable Weyl and Dirac states in the nonsymmorphic compound
Leslie M. Schoop, Andreas Topp, Judith Lippmann +14
Recent interest in topological semimetals has lead to the proposal of many new topological phases that can be realized in real materials. Next to Dirac and Weyl systems, these incl…
Sub-picosecond spin dynamics of excited states in the topological insulator BiTe
J. Sánchez-Barriga, M. Battiato, M. Krivenkov +9
Using time-, spin- and angle-resolved photoemission, we investigate the ultrafast spin dynamics of hot electrons on the surface of the topological insulator BiTe following…