Publications related to Thermo-optic tuning of spectral broadening in a nonlinear Ultra-Silicon-Rich Nitride grating

Quench analysis of a high-current forced-flow HTS conductor model for fusion magnets

A fundamental understanding of the quench phenomenon is particularly important in the design and operation of magnets using High Temperature Superconductors because the quench propagation velocity is low due to high specific heat at high temperature. We ha ...

2011

Quench Analysis of a High-Current Forced-Flow HTS Conductor Model for Fusion Magnets

Rainer Wesche, Luca Bottura

A fundamental understanding of the quench phenomenon is particularly important in the design and operation of magnets using High Temperature Superconductors because the quench propagation velocity is low due to high specific heat at high temperature. We ha ...

2011

Relation between susceptibility and Knight shift in La2NiO4.17 and K2NiF4 by Ni-61 NMR

Jacques Van Der Klink

The NiO4 plaquettes in La2NiO4.17, a cousin of the hole-doped high-temperature superconductor La2-xSrxCuO4, have been studied by Ni-61 NMR in 14 T in a single crystal enriched in Ni-61. Doped and undoped plaquettes are discriminated by the shift of the NMR ...

2010

Phase diagram of a polariton laser from cryogenic to room temperature

Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Eric Feltin, Jacques Levrat, Gabriel Christmann

The signature of the strong-coupling regime is unambiguously evidenced in a GaN-based microcavity (MC) above the polariton lasing threshold P-thr at room temperature through the observation of the upper polariton branch. The MC system exhibits a renormaliz ...

2009

Anomalous frequency and intensity scaling of collective and local modes in a coupled-spin tetrahedral system Cu2Te2O5Cl2

Helmuth Berger

We report on the magnetic excitation spectrum of the coupled-spin tetrahedral system Cu2Te2O5Cl2 using Raman scattering on single crystals. The transition to an ordered state at T-N(Cl)=18.2 K evidenced from thermodynamic data leads to the evolution of dis ...

2009

Differential-thermal analysis around and below the critical temperature T-c of various low-T-c superconductors: A comparative study

Helmuth Berger

We present specific-heat data on the type-II superconductors V3Si, LuNi2B2C and NbSe2 which were acquired with a low-temperature thermal analysis (DTA) technique. We compare our data with available literature data on these superconductors. In the first par ...

2008

Charging dynamics of localized 2D layers of Si nanocrystals embedded into SiO2 by stencil masked ultra low energy ion implantation process

Jürgen Brugger, Andreea Veronica Savu, Marc Antonius Friedrich van den Boogaart

Flash memories based on nanoparticles (NPs) offer an attractive alternative for performance enhancement and size downscaling of non-volatile memory cells. In these devices, Coulomb blockade and quantized charging effects can be exploited at room temperatur ...

2008

Pseudoferroelectricity: A possible scenario for doped ZnO

Alexander Tagantsev

A phenomenological Landau-theory model, where a crystal on cooling from a state with polar symmetry exhibits a maximum of dielectric permittivity and polarization-field hysteresis loops, is offered. The model is equivalent to that of a true ferroelectric i ...

2008

From quantum glass to addressable spin clusters in the model magnet LiHoxY1−xF4

Tatjana Hählen

This report describes an AC-susceptibility study on

LiHo_xY_{1−x}F_4

.

LiHo_xY_{1−x}F_4 has different phases depending on the concentration x of holmium. Pure

LiHoF_4

is a ferromagnet, at concentrations of

x \approx 0.20$ it is a spin glass and at con ...

2007

Coupled atomistic/discrete dislocation simulations of nanoindentation at finite temperature

William Curtin, Ronald Earle Miller

Simulations of nanoindentation in single crystals are performed using a finite temperature coupled atomistic/continuum discrete dislocation (CADD) method. This computational method for multiscale modeling of plasticity has the ability of treating dislocati ...

2005

Thermo-optic tuning of spectral broadening in a nonlinear Ultra-Silicon-Rich Nitride grating

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Quench analysis of a high-current forced-flow HTS conductor model for fusion magnets

Quench Analysis of a High-Current Forced-Flow HTS Conductor Model for Fusion Magnets

Relation between susceptibility and Knight shift in La2NiO4.17 and K2NiF4 by Ni-61 NMR

Phase diagram of a polariton laser from cryogenic to room temperature

Anomalous frequency and intensity scaling of collective and local modes in a coupled-spin tetrahedral system Cu2Te2O5Cl2

Differential-thermal analysis around and below the critical temperature T-c of various low-T-c superconductors: A comparative study

Charging dynamics of localized 2D layers of Si nanocrystals embedded into SiO2 by stencil masked ultra low energy ion implantation process

Pseudoferroelectricity: A possible scenario for doped ZnO

From quantum glass to addressable spin clusters in the model magnet LiHoxY1−xF4

Coupled atomistic/discrete dislocation simulations of nanoindentation at finite temperature

Relation between susceptibility and Knight shift in La2NiO4.17 and K2NiF4 by Ni-61 NMR

Phase diagram of a polariton laser from cryogenic to room temperature

Coupled atomistic/discrete dislocation simulations of nanoindentation at finite temperature

Differential-thermal analysis around and below the critical temperature T-c of various low-T-c superconductors: A comparative study

Charging dynamics of localized 2D layers of Si nanocrystals embedded into SiO2 by stencil masked ultra low energy ion implantation process

From quantum glass to addressable spin clusters in the model magnet LiHoxY1−xF4

Quench Analysis of a High-Current Forced-Flow HTS Conductor Model for Fusion Magnets

Pseudoferroelectricity: A possible scenario for doped ZnO

Quench analysis of a high-current forced-flow HTS conductor model for fusion magnets

Anomalous frequency and intensity scaling of collective and local modes in a coupled-spin tetrahedral system Cu2Te2O5Cl2