Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS

Autor: E. Paris, C. W. Nicholson, S. Johnston, Y. Tseng, M. Rumo, G. Coslovich, S. Zohar, M. F. Lin, V. N. Strocov, R. Saint-Martin, A. Revcolevschi, A. Kemper, W. Schlotter, G. L. Dakovski, C. Monney, T. Schmitt

Publikováno v: npj Quantum Materials, Vol 6, Iss 1, Pp 1-8 (2021)

Abstract 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 magnetic sub-system. However, short-range magnetic correlations

Externí odkaz: https://doaj.org/article/cf551c72453542e28b17c31a9626fbd3

Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric α-GeTe(111) by alkali doping

Autor: G. Kremer, T. Jaouen, B. Salzmann, L. Nicolaï, M. Rumo, C. W. Nicholson, B. Hildebrand, J. H. Dil, J. Minár, G. Springholz, J. Krempaský, C. Monney

Publikováno v: Physical Review Research, Vol 2, Iss 3, p 033115 (2020)

α-GeTe(111) is a noncentrosymmetric ferroelectric material for which a strong spin-orbit interaction gives rise to giant Rashba split states in the bulk and at the surface. The detailed dispersions of the surface states inside the bulk band gap rema

Externí odkaz: https://doaj.org/article/f4a45fdfed1e4585bcef9b7c7581e008

Excited-state band structure mapping

Autor: M. Puppin, C. W. Nicholson, C. Monney, Y. Deng, R. P. Xian, J. Feldl, S. Dong, A. Dominguez, H. Hübener, A. Rubio, M. Wolf, L. Rettig, R. Ernstorfer

Publikováno v: Physical Review B
Addi. Archivo Digital para la Docencia y la Investigación
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Angle-resolved photoelectron spectroscopy is an extremely powerful probe of materials to access the occupied electronic structure with energy and momentum resolution. However, it remains blind to those dynamic states above the Fermi level that determ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57182c36d8efbd71cd0c9c8fadd90fe0
https://hdl.handle.net/21.11116/0000-0009-22C5-221.11116/0000-0009-22C7-021.11116/0000-000A-19C8-9

Insensitivity of the striped charge-orders in IrTe$_2$ to alkali surface doping implies their structural origin

Autor: C. W. Nicholson, M. Rumo, B. Salzmann, Aki Pulkkinen, F. von Rohr, T. Jaouen, Geoffroy Kremer, KeYuan Ma, B. Hildebrand, Claude Monney

Publikováno v: Physical Review Materials
Physical Review Materials, 2021, 5 (7), pp.074002. ⟨10.1103/PhysRevMaterials.5.074002⟩
Physical Review Materials, American Physical Society, 2021, 5 (7), pp.074002. ⟨10.1103/PhysRevMaterials.5.074002⟩

We present a combined angle-resolved photoemission spectroscopy and low-energy electron diffraction (LEED) study of the prominent transition metal dichalcogenide ${\mathrm{IrTe}}_{2}$ upon potassium (K) deposition on its surface. Pristine ${\mathrm{I

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::387c5cc608a22b261fa331a8e1c3dbfe
http://arxiv.org/abs/2106.08642

Unveiling the complete dispersion of the giant Rashba split surface states of ferroelectric α−GeTe(111) by alkali doping

Autor: C. W. Nicholson, Laurent Nicolaï, Jan Minár, G. Springholz, B. Salzmann, Jan Hugo Dil, M. Rumo, J. Krempaský, Thomas Jaouen, B. Hildebrand, Geoffroy Kremer, Claude Monney

Publikováno v: Physical Review Research. 2

This paper shows how the detailed dispersion of the giant Rashba split surface states in the ferroelectric \ensuremath{\alpha}--GeTe(111) can be resolved by static ARPES and surface potassium doping. The authors further confirm the Rashba mechanism f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee710393bf2da7462e51fbe47df264ab
https://doi.org/10.1103/physrevresearch.2.033115