147 citations · 676 across the 16 of their papers we have counts for
16 papers
Bulk and surface electronic structure of BiTe from calculations and photoemission experiments
Dmitrii Nabok, Murat Tas, Shotaro Kusaka +6
We present a combined theoretical and experimental study of the electronic structure of stoichiometric BiTe, a natural superlattice of alternating BiTe quintuple la…
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…
Effect of doping, photodoping and bandgap variation on the performance of perovskite solar cells
Basita Das, Irene Aguilera, Uwe Rau +1
Most traditional semiconductor materials are based on the control of doping densities to create junctions and thereby functional and efficient electronic and optoelectronic devices…
topology of bismuth
Irene Aguilera, Hyun-Jung Kim, Christoph Friedrich +2
While first-principles calculations with different levels of sophistication predict a topologically trivial state for bulk bismuth, some photoemission experiments show surfac…
Orbital contributions in the element-resolved valence electronic structure of Bi2Se3
Cheng-Tai Kuo, Shih-Chieh Lin, Jean-Pascal Rueff +9
In this work, we studied the bulk band structure of a topological insulator (TI) Bi2Se3 and determined the contributions of the Bi and Se orbital states to the valence bands using…
Defect tolerant device geometries
Basita Das, Zhifa Liu, Irene Aguilera +2
The term defect tolerance is widely used in literature to describe materials such as lead-halides which exhibit long non-radiative lifetimes of carriers despite possessing a large…
Improved Hölder continuity near the boundary of one-dimensional super-Brownian motion
Jieliang Hong
We show that the local time of one-dimensional super-Brownian motion is locally -Hölder continuous near the boundary if and fails to be locally -Hölder continuous if…
Anomalous behavior of the electronic structure of (BiIn)Se across the quantum-phase transition from topological to trivial insulator
J. Sánchez-Barriga, I. Aguilera, L. V. Yashina +9
Using spin- and angle-resolved spectroscopy and relativistic many-body calculations, we investigate the evolution of the electronic structure of (BiIn)Se bulk s…
Infrared/Terahertz Spectra of the Photogalvanic Effect in (Bi,Sb)Te based Three Dimensional Topological Insulators
H. Plank, J. Pernul, S. Gebert +9
We report on the systematic study of infrared/terahertz spectra of photocurrents in (Bi,Sb)Te based three dimensional topological insulators. We demonstrate that in a wide range of…
Direct observation of the band gap transition in atomically thin ReS
Mathias Gehlmann, Irene Aguilera, Gustav Bihlmayer +13
ReS is considered as a promising candidate for novel electronic and sensor applications. The low crystal symmetry of the van der Waals compound ReS leads to a highly anisot…
Surface Fermi arc connectivity in the type-II Weyl semimetal candidate WTe
J. Sánchez-Barriga, M. G. Vergniory, D. Evtushinsky +4
We perform ultrahigh resolution angle-resolved photoemission experiments at a temperature T=0.8 K on the type-II Weyl semimetal candidate WTe. We find a surface Fermi arc con…
Fermi surface manipulation by external magnetic field demonstrated for a prototypical ferromagnet
E. Młyńczak, M. Eschbach, S. Borek +12
We consider the details of the near-surface electronic band structure of a prototypical ferromagnet, Fe(001). Using high resolution angle-resolved photoemission spectroscopy we dem…
Quasi 2D electronic states with high spin-polarization in centrosymmetric MoS bulk crystals
Mathias Gehlmann, Gustav Bihlmayer, Irene Aguilera +9
Time reversal dictates that nonmagnetic, centrosymmetric crystals cannot be spin-polarized as a whole. However, it has been recently shown that the electronic structure in these cr…
Electronic phase transitions of bismuth under strain from relativistic self-consistent GW calculations
Irene Aguilera, Christoph Friedrich, Stefan Blügel
We present quasiparticle self-consistent GW (QSGW) calculations of semimetallic bulk Bi. We go beyond the conventional QSGW method by including the spin-orbit coupling throughout t…
Bulk Band Structure of BiTe
Matteo Michiardi, Irene Aguilera, Marco Bianchi +7
The bulk band structure of BiTe has been determined by angle-resolved photoemission spectroscopy and compared to first-principles calculations. We have performed calculatio…
Evidence for a direct band gap in the topological insulator Bi2Se3 from theory and experiment
I. A. Nechaev, R. C. Hatch, M. Bianchi +8
Using angle-resolved photoelectron spectroscopy and ab-initio GW calculations, we unambiguously show that the widely investigated three-dimensional topological insulator Bi2Se3 has…