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One-electron spectral functions of the attractive Hubbard model at intermediate coupling

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Converse effect of pressure on the quadrupolar and magnetic transition in Ce3Pd20Si6

Henrik Moodysson Rønnow, Julio Antonio Larrea Jiménez

The heavy fermion compound Ce3Pd20Si6 displays unconventional quantum criticality as the lower of two consecutive phase transitions is fully suppressed by magnetic field. Here we report on the effects of pressure as an additional tuning parameter. Specific ...

Amer Physical Soc2016

Adaptive elastic networks as models of supercooled liquids

Matthieu Wyart

The thermodynamics and dynamics of supercooled liquids correlate with their elasticity. In particular for covalent networks, the jump of specific heat is small and the liquid is strong near the threshold valence where the network acquires rigidity. By cont ...

Amer Physical Soc2015

Heat capacity properties of quasi-one-dimensional magnet beta-TeVO4

Helmuth Berger

We studied the temperature dependence of heat capacity C-P(T) of a quasi-one-dimensional magnetic system beta-TeVO4, in a zero magnetic field and a temperature region of 0.1 K

Amer Inst Physics2015

Combined and Distinct Contributions of Different Carbon Nano-Forms in Polypropylene

Nikolaos Nianias

In the present work a thorough investigation of how small amounts of multiwall carbon nanotubes (CNTs), nanodiamonds (NDs), and combinations between them affect the properties and performance of polypropylene (PP) is presented. An improvement on the mechan ...

Wiley-V C H Verlag Gmbh2015

Sub-millikelvin stabilization of a closed cycle cryocooler

Guy Joseph Günter Dubuis, Ivan Bozovic, Xi He

Intrinsic temperature oscillations (with the amplitude up to 1 K) of a closed cycle cryocooler are stabilized by a simple thermal damping system. It employs three different materials with different thermal conductivity and specific heat at various temperat ...

American Institute of Physics2014

Bose-Einstein condensation of light in a cavity

The paper considers Bose-Einstein condensation (BEC) of light in a cavity with a medium. In the framework of a two-level model we show the effect of gaseous medium on the critical temperature of light condensation in the system. Transition of the system to ...

American Physical Society2014

Single crystal study of the heavy-fermion antiferromagnet CePt2In7

Philip Johannes Walter Moll

We report the synthesis, structure, and physical properties of single crystals of CePt2In7. Single crystal x-ray diffraction analysis confirms the tetragonal I4/mmm structure of CePt2In7 with unit cell parameters a = 4.5886(6) Å, c = 21.530(6) Å and V = 45 ...

2012

Heat-driven spin currents on large scales

Jean-Philippe Ansermet, Sylvain Bréchet

Using a three-current model (i.e. heat, spin-up and spin-down electrons) the thermodynamics of irreversible processes predicts that a temperature gradient gives rise to a spin current on large scales, in particular under the conditions used to measure the ...

Wiley-Blackwell2011

Effective hydrogen diffusion coefficient for solidifying aluminium alloys

Michel Rappaz, Ludger Weber, Milan Felberbaum

An effective hydrogen diffusion coefficient has been calculated for two solidifying Al - 4.5 wt.% Cu and Al - 10 wt.% Cu alloys as a function of the volume fraction of solid. For this purpose, in situ X-ray tomography was performed on these alloys. For eac ...

Elsevier2011

Magnetization and specific heat of the dimer system CuTe2O5

Helmuth Berger, Zheng Wang

We report on magnetization and specific heat measurements on single-crystalline CuTe2O5. The experimental data are directly compared to theoretical results for two different spin structures, namely an alternating spin-chain and a two-dimensional (2D) coupl ...

2011