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The growth by laser ablation and electronic properties of thin cuprate films

Publications associées (74)

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We use high-resolution angle-resolved photoemission spectroscopy to map the three-dimensional momentum dependence of the superconducting gap in FeSe. We find that on both the hole and electron Fermi surfaces, the magnitude of the gap follows the distributi ...

2018

Observation of a two-dimensional electron gas at CaTiO3 film surfaces

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli, Andrew Patton Weber, Zoran Ristic, Zheng Wang

The two-dimensional electron gas at the surface of titanates gathered attention due to its potential to replace conventional silicon based semiconductors in the future. In this study, we investigated films of the parent perovskite CaTiO3, grown by pulsed l ...

Elsevier Science Bv2018

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Despite the enormous success and popularity of density-functional theory, systematic verification and validation studies are still limited in number and scope. Here, we propose a protocol to test publicly available pseudopotential libraries, based on sever ...

2018

Hybrid surface wave device

Hans Peter Herzig, Myun Sik Kim

We present a hybrid surface wave device, which combines Bloch surface wave (BSW) and plasmonic nanoantennas. BSWs offer in-plane dark-field illumination. Nanoantennas squeeze the incidence into nano-size and enable far-field readout without near-field tech ...

IEEE2018

Manipulation of the Two-Dimensional States at Titanates Surfaces studied by ARPES

Stefan Peter Muff

The transition metal oxides are known for their versatile physical properties and are therefore an active field of research towards possible new functionalities and applications. This thesis focuses on the subgroup of titanates with perovskite structure th ...

EPFL2017

Bulk diffusive relaxation mechanisms in optically excited topological insulators

Arnaud Magrez, Helmuth Berger, Philippe Bugnon, Alberto Crepaldi

The possibility to inject spin currents in topological insulators (TIs) by ultrashort optical pulses has stimulated intense studies of their out-of-equilibrium electronic properties. However, a comprehensive description of the electronic relaxation dynamic ...

Amer Physical Soc2017

High-energy electronic interaction in the 3d band of high-temperature iron-based superconductors

Maryna Viazovska, Helmuth Berger

One of the most unique and robust experimental facts about iron-based superconductors is the renormalization of the electronic band dispersion by factor of 3 and more near the Fermi level. Obviously related to the electron pairing, this prominent deviation ...

Amer Physical Soc2017

Spin-resolved band structure of a densely packed Pb monolayer on Si(111)

Jan Hugo Dil, Stefan Peter Muff, Mauro Fanciulli

Monolayer structures of Pb on Si(111) attracted recently considerable interest as superconductivity was found in these truly two-dimensional (2D) structures. In this study, we analyzed the electronic surface band structure of the so-called striped incommen ...

Amer Physical Soc2017

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The manipulation of the electronic properties of solids by light is an exciting goal, which requires knowledge of the electronic structure with energy, momentum and temporal resolution. Time- and angle-resolved photoemission spectroscopy (tr-ARPES) is the ...

2017

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The quest for investigating the non-equilibrium dynamics of the band structure of strongly-correlated materials over their entire Brillouin zone is a primary objective. However, the actual ultrafast UV light sources are not suitable for addressing several ...

Elsevier Science Bv2016