Dynamical screening effects in correlated electron materials—a progress report on combined many-body perturbation and dynamical mean field theory:'GW+ DMFT'

S Biermann - Journal of Physics: Condensed Matter, 2014 - iopscience.iop.org
We give a summary of recent progress in the field of electronic structure calculations for
materials with strong electronic Coulomb correlations. The discussion focuses on …

Long-Range Coulomb Interactions in Surface Systems: A First-Principles Description within Self-Consistently Combined and Dynamical Mean-Field Theory

P Hansmann, T Ayral, L Vaugier, P Werner… - Physical review …, 2013 - APS
Systems of adatoms on semiconductor surfaces display competing ground states and exotic
spectral properties typical of two-dimensional correlated electron materials which are …

Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator SrIrO

PDC King, T Takayama, A Tamai, E Rozbicki… - Physical Review B …, 2013 - APS
We investigate the bilayer Ruddlesden-Popper iridate Sr 3 Ir 2 O 7 by temperature-
dependent angle-resolved photoemission. At low temperatures, we find a fully gapped …

What about U on surfaces? Extended Hubbard models for adatom systems from first principles

P Hansmann, L Vaugier, H Jiang… - Journal of Physics …, 2013 - iopscience.iop.org
Electronic correlations together with dimensional constraints lead to some of the most
fascinating properties known in condensed matter physics. As possible candidates where …

Competing charge ordering and Mott phases in a correlated Sn/Ge (111) two-dimensional triangular lattice

R Cortés, A Tejeda, J Lobo-Checa, C Didiot… - Physical Review B …, 2013 - APS
We take advantage of complementary high-resolution experimental techniques and
theoretical tools to get insight into the α-Sn/Ge (111) triangular lattice surface consisting of …

Uncertainty principle for experimental measurements: Fast versus slow probes

P Hansmann, T Ayral, A Tejeda, S Biermann - Scientific reports, 2016 - nature.com
The result of a physical measurement depends on the time scale of the experimental probe.
In solid-state systems, this simple quantum mechanical principle has far-reaching …

Switching the charge state of individual surface atoms at Si (111)-√ 3×√ 3: B surfaces

D Eom, CY Moon, JY Koo - Nano letters, 2015 - ACS Publications
We show that each surface atom of heavily boron-doped,(111)-oriented silicon with a√ 3×√
3 reconstruction has electrically switchable two charge states due to the strong electron …

Reflection high-energy positron diffraction: the past 15 years and the future

Y Fukaya, M Maekawa, I Mochizuki… - Journal of Physics …, 2013 - iopscience.iop.org
Reflection high-energy positron diffraction (RHEPD) is the positron counterpart of reflection
high-energy electron diffraction (RHEED). Owing to the positive charge of the positron …

Electron‐lattice correlations and phase transitions in CMR manganites

V Moshnyaga, K Samwer - Annalen der Physik, 2011 - Wiley Online Library
Interrelations between global and local structure and magnetism and transport in three‐
dimensional perovskite manganites is reviewed and compared with recent studies on thin …

Giant Alkali-Metal-Induced Lattice Relaxation as the Driving Force<? format?> of the Insulating Phase of Alkali-Metal/Si (111): B

L Chaput, C Tournier-Colletta, L Cardenas, A Tejeda… - Physical Review Letters, 2011 - APS
Ab initio density-functional theory calculations, photoemission spectroscopy (PES), scanning
tunneling microscopy, and spectroscopy (STM, STS) have been used to solve the 2 3× 2 3 R …