Publications associées à Théorie des quanta

Suppression of the quantum-confined Stark effect in polar nitride heterostructuresis

Gordon Jens Callsen, Antoine Cyril David Hoffmann

Recently, we suggested an unconventional approach (the so-called Internal-Field-Guarded-Active-Region Design "IFGARD") for the elimination of the quantum-confined Stark effect in polar semiconductor heterostructures. The IFGARD-based suppression of the Sta ...

NATURE PUBLISHING GROUP2018

Stark broadening of Balmer lines with low and moderate quantum number in dense divertor plasmas

Basil Duval, Kevin Henricus Annemarie Verhaegh

A computer simulation technique is applied to the modelling of Balmer line shapes in dense divertor conditions. The spectral profile of lines with a high principal quantum number n is sensitive to Stark broadening and can be used as a density diagnostic. I ...

2018

Anomalous Hall and Nernst Effects in Co2TiSn and Co2Ti0.6V0.4Sn Heusler Thin Films

Jean-Philippe Ansermet, Haiming Yu, Sa Tu, Junfeng Hu, Yao Zhang

Magnetotransport (magnetoresistance and anomalous Hall effect) and thermoelectric (Seebeck and anomalous Nernst effect) effects are investigated on epitaxially grown Co2TiSn and Co2Ti0.6V0.4Sn Heusler thin films. An anomalous Nernst coefficient up to 1.8 m ...

AMER PHYSICAL SOC2018

Semiclassics, Goldstone bosons and CFT data

Riccardo Rattazzi, Alexander Monin, David Pirtskhalava, Fiona Katharina Seibold

Hellerman et al. (arXiv:1505.01537) have shown that in a generic CFT the spectrum of operators carrying a large U(1) charge can be analyzed semiclassically in an expansion in inverse powers of the charge. The key is the operator state correspondence by whi ...

Springer2017

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Jean-Philippe Ansermet, Haiming Yu, Sa Tu, Junfeng Hu, Jianyu Zhang, Yao Zhang, Xiangrong Wang

The anomalous Nernst effect in a perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO thin film is measured using well-defined in-plane temperature gradients. The anomalous Nernst coefficient reaches 1.8 mu V/K at room temperature, which is almost 50 times ...

American Institute of Physics2017

The Sommerfeld half-space problem revisited: from radio frequencies and Zenneck waves to visible light and Fano modes

Juan Ramon Mosig, Krzysztof Michalski

The classical Sommerfeld half-space problem is revisited, with generalizations to multilayer and plasmonic media and focus on the surface field computation. A new ab initio solution is presented for an arbitrarily oriented Hertzian dipole radiating in the ...

Taylor & Francis Ltd2016

Nanometer-scale monitoring of quantum-confined Stark effect and emission efficiency droop in multiple GaN/AlN quantum disks in nanowires

Gwénolé Jean Jacopin

We report on a detailed study of the intensity dependent optical properties of individual GaN/AlN quantum disks (QDisks) embedded into GaN nanowires (NW). The structural and optical properties of the QDisks were probed by high spatial resolution cathodolum ...

Amer Physical Soc2016

Semiclassical theory of the magnetization process of the triangular lattice Heisenberg model

Frédéric Mila, Karlo Penc, Tommaso Coletta, Tamás András Tóth

Motivated by the numerous examples of 1/3 magnetization plateaux in the triangular-lattice Heisenberg antiferromagnet with spins ranging from 1/2 to 5/2, we revisit the semiclassical calculation of the magnetization curve of that model, with the aim of com ...

2016

Symmetries and optical transitions of hexagonal quantum dots in GaAs/AlGaAs nanowires

Marc-André Dupertuis

We investigate the properties of electronic states and optical transitions in hexagonal GaAs quantum dots within Al0.3Ga0.7As nanowires, grown in axial direction [111]. Such dots are particularly interesting due to their high degree of symmetry. A streamli ...

Amer Physical Soc2015

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Théorie des quanta

Suppression of the quantum-confined Stark effect in polar nitride heterostructuresis

Stark broadening of Balmer lines with low and moderate quantum number in dense divertor plasmas

Anomalous Hall and Nernst Effects in Co2TiSn and Co2Ti0.6V0.4Sn Heusler Thin Films

Semiclassics, Goldstone bosons and CFT data

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Interaction between site-controlled quantum dot systems and photonic cavity structures

The Sommerfeld half-space problem revisited: from radio frequencies and Zenneck waves to visible light and Fano modes

Nanometer-scale monitoring of quantum-confined Stark effect and emission efficiency droop in multiple GaN/AlN quantum disks in nanowires

Semiclassical theory of the magnetization process of the triangular lattice Heisenberg model

Symmetries and optical transitions of hexagonal quantum dots in GaAs/AlGaAs nanowires

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Chattez avec Graph Search

The Sommerfeld half-space problem revisited: from radio frequencies and Zenneck waves to visible light and Fano modes

Semiclassics, Goldstone bosons and CFT data

Symmetries and optical transitions of hexagonal quantum dots in GaAs/AlGaAs nanowires

Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy

Interaction between site-controlled quantum dot systems and photonic cavity structures

Nanometer-scale monitoring of quantum-confined Stark effect and emission efficiency droop in multiple GaN/AlN quantum disks in nanowires

Semiclassical theory of the magnetization process of the triangular lattice Heisenberg model

Stark broadening of Balmer lines with low and moderate quantum number in dense divertor plasmas

Anomalous Hall and Nernst Effects in Co2TiSn and Co2Ti0.6V0.4Sn Heusler Thin Films

Suppression of the quantum-confined Stark effect in polar nitride heterostructuresis