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Erratum to: Maximal oxygen consumption in healthy humans: theories and facts

Ferretti, Guido

In: European Journal of Applied Physiology, 2015, vol. 115, no. 3, p. 649-649

Université de Fribourg

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

Kremer, Geoffroy ; Jaouen, Thomas ; Salzmann, Björn ; Nicolaï, L. ; Rumo, Maxime ; Nicholson, Christopher W. ; Hildebrand, Baptiste ; Dil, J. Hugo ; Springholz, G. ; Krempasky, Juraj ; Monney, Claude

In: Physical Review Research, 2020, vol. 2, no. 3, p. 033115

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 remains an open question because they are located in the unoccupied part of the electronic structure, making them inaccessible to static...

Université de Fribourg

Unveiling the Semimetallic Nature of 1$T$-TiSe$_2$ by Doping its Charge Density Wave

Jaouen, Thomas ; Rumo, Maxime ; Hildebrand, Baptiste ; Mottas, Marie-Laure ; Nicholson, Christopher W. ; Kremer, Geoffroy ; Salzmann, Björn ; Vanini, Fabiano ; Barreteau, C. ; Giannini, E. ; Beck, Hans-Peter ; Aebi, Philipp ; Monney, Claude

The semimetallic or semiconducting nature of the transition metal dichalcogenide 1$T$-TiSe$_2$ remains under debate after many decades mainly due to the fluctuating nature of its 2 x 2 x 2 charge-density-wave (CDW) phase at room- temperature. In this letter, using angle-resolved photoemission spectroscopy, we unambiguously demonstrate that the 1$T$-TiSe$_2$ normal state is semimetallic with ...

Université de Fribourg

Ultrafast dynamics of the surface photovoltage in potassium-doped black phosphorus

Kremer, Geoffroy ; Rumo, Maxime ; Yue, Changming ; Pulkkinen, Aki ; Nicholson, Christopher W. ; Jaouen, Thomas ; Von Rohr, Fabian ; Werner, Philipp ; Monney, Claude

In: Physical Review B, 2021, vol. 104, no. 3, p. 035125

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 black phosphorus, leading to a semiconductor to semimetal phase transition originating from the creation of a strong surface dipole and associated band bending. By using time- and angle-resolved photoemission ...

Université de Fribourg

Insensitivity of the striped charge orders in ${\mathrm{IrTe}}_{2}$ to alkali surface doping implies their structural origin

Rumo, Maxime ; Pulkkinen, Aki ; Salzmann, Björn ; Kremer, Geoffroy ; Hildebrand, Baptiste ; Ma, Keyan ; von Rohr, Fabian ; Nicholson, Christopher W. ; Jaouen, Thomas ; Monney, Claude

In: Physical Review Materials, 2021, vol. 5, no. 7, p. 074002

We present a combined angle-resolved photoemission spectroscopy and low-energy electron diffraction (LEED) study of the prominent transition metal dichalcogenide IrTe2 upon potassium (K) deposition on its surface. Pristine IrTe2 undergoes a series of charge-ordered phase transitions below room temperature that are characterized by the formation of stripes of Ir dimers of different...