52 citations · 202 across the 16 of their papers we have counts for
16 papers
Ultrafast dynamics of excitons in black phosphorus
Geoffroy Kremer, Juan F. P. Mosquera, Joël Morf +9
Excitons are key quasiparticles determining the optical properties of solids. As such, they can be utilized to coherently control the electronic structure of materials using optica…
Ultrafast recovery dynamics of dimer stripes in IrTe2
M. Rumo, G. Kremer, M. Heber +10
The transition metal dichalcogenide IrTe2 displays a remarkable series of first-order phase transitions below room temperature, involving lattice displacements as large as 20 perce…
Bonding states underpinning structural transitions in IrTe observed with micro-ARPES
C. W. Nicholson, M. D. Watson, A. Pulkkinen +6
Competing interactions in low-dimensional materials can produce nearly degenerate electronic and structural phases. We investigate the staircase of structural phase transitions in…
Carrier-Density Control of the Quantum-Confined 1-TiSe Charge-Density-Wave
T. Jaouen, A. Pulkkinen, M. Rumo +9
Using angle-resolved photoemission spectroscopy, combined with first principle and coupled self-consistent Poisson-Schrödinger calculations, we demonstrate that potassium (K) atoms…
Electron-momentum dependence of electron-phonon coupling underlies dramatic phonon renormalization in YNiBC
Philipp Kurzhals, Geoffroy Kremer, Thomas Jaouen +12
Electron-phonon coupling, i.e., the scattering of lattice vibrations by electrons and vice versa, is ubiquitous in solids and can lead to emergent ground states such as superconduc…
Break of symmetry at the surface of IrTe upon phase transition measured by X-ray photoelectron diffraction
Maxime Rumo, Aki Pulkkinen, KeYuan Ma +3
IrTe undergoes a series of charge-ordered phase transitions below room temperature that are characterized by the formation of stripes of Ir dimers of different periodicities. F…
Insensitivity of the striped charge-orders in IrTe to alkali surface doping implies their structural origin
M. Rumo, A. Pulkkinen, B. Salzmann +7
We present a combined angle-resolved photoemission spectroscopy and low-energy electron diffraction (LEED) study of the prominent transition metal dichalcogenide IrTe upon pota…
Ultrafast Dynamics of the Surface Photovoltage in Potassium Doped Black Phosphorus
G. Kremer, M. Rumo, C. Yue +6
Black phosphorus is a quasi-two-dimensional layered semiconductor with a narrow direct band gap of 0.3 eV. A giant surface Stark effect can be produced by the potassium doping of b…
Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS
E. Paris, C. W. Nicholson, S. Johnston +13
Investigations of magnetically ordered phases on the femtosecond timescale have provided significant insights into the influence of charge and lattice degrees of freedom on the mag…
Observation of a uniaxial strain-induced phase transition in the 2D topological semimetal IrTe
C. W. Nicholson, M. Rumo, A. Pulkkinen +12
Strain is ubiquitous in solid-state materials, but despite its fundamental importance and technological relevance, leveraging externally applied strain to gain control over materia…
Novel Cu-based dz2 order at a YBa2Cu3O7/ manganite interface
Roxana Gaina, Christopher W. Nicholson, Maxime Rumo +12
The interplay of nearly degenerate orders in quantum materials can lead to a myriad of emergent phases. A prominent case is that of the high-Tc cuprates for which the relationship…
Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric -GeTe(111) by alkali doping
G. Kremer, T. Jaouen, B. Salzmann +9
-GeTe(111) is a non-centrosymmetric ferroelectric material, for which a strong spin-orbit interaction gives rise to giant Rashba split states in the bulk and at the surface. The…
Examining the surface phase diagram of IrTe with photoemission
M. Rumo, C. W. Nicholson, A. Pulkkinen +13
In the transition metal dichalcogenide IrTe, low-temperature charge-ordered phase transitions involving Ir dimers lead to the occurrence of stripe phases of different periodici…
Unveiling the Semimetallic Nature of 1-TiSe by Doping its Charge Density Wave
T. Jaouen, M. Rumo, B. Hildebrand +10
The semimetallic or semiconducting nature of the transition metal dichalcogenide 1-TiSe remains under debate after many decades mainly due to the fluctuating nature of its 2…
Semimetal-to-semiconductor transition and charge-density-wave melting in -TiSeS single crystals
M. -L. Mottas, T. Jaouen, B. Hildebrand +9
The transition metal dichalcogenide -TiSe is a quasi-two-dimensional layered material with a phase transition towards a commensurate charge density wave (CDW) at a critical…
Phase Separation in the Vicinity of Fermi Surface Hot Spots
T. Jaouen, B. Hildebrand, M. -L. Mottas +12
Spatially inhomogeneous electronic states are expected to be key ingredients for the emergence of superconducting phases in quantum materials hosting charge-density-waves (CDWs). P…