Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Jaccard, Didier"'
Autor:
Scheerer, Gernot W., Ren, Zhi, Watanabe, Shinji, Lapertot, Gérard, Aoki, Dai, Jaccard, Didier, Miyake, Kazumasa
Publikováno v:
npj Quantum Materials Volume 3, Article number: 41 (2018)
Despite almost 40 years of research, the origin of heavy-fermion superconductivity is still strongly debated. Especially, the pressure-induced enhancement of superconductivity in CeCu$_2$Si$_2$ away from the magnetic breakdown is not sufficiently tak
Externí odkaz:
http://arxiv.org/abs/1711.05145
Publikováno v:
G. W. Scheerer, Z. Ren, G. Lapertot, G. Garbarino, D. Jaccard, Physica B (2017), 10.1016/j.physb.2017.09.120
We present the pressure-temperature phase diagram of the antiferromagnet CeAg$_2$Si$_2$ established via resistivity and calorimetry measurements under quasi-hydrostatic conditions up to 22.5~GPa. With increasing pressure, the N\'eel temperature [$T_{
Externí odkaz:
http://arxiv.org/abs/1711.02965
Publikováno v:
J. Phys. Soc. Jpn., Vol.86, No.6, Article ID: 064710 (2017)
The pressure-temperature-phase diagram of the new heavy-fermion superconductor CeAu$_2$Si$_2$ is markedly different from those studied previously. Indeed, superconductivity emerges, not on the verge, but deep inside the magnetic phase. In this contex
Externí odkaz:
http://arxiv.org/abs/1611.03234
Many cerium-based heavy fermion (HF) compounds have pressure-temperature phase diagrams in which a superconducting region extends far from a magnetic quantum critical point. In at least two compounds, CeCu2Si2 and CeCu2Ge2, an enhancement of the supe
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611429
Autor:
Hastings-Simon, Sara R., Staudt, Matthias U., Afzelius, Mikael, Baldi, Pascal, Jaccard, Didier, Tittel, Wolfgang, Gisin, Nicolas
We present measurements of the linear Stark effect on the $^{4}$I$_{15/2} \to$ $^{4}$I$_{13/2}$ transition in an Er$^{3+}$-doped proton-exchanged LiNbO$_{3}$ crystalline waveguide and an Er$^{3+}$-doped silicate fiber. The measurements were made usin
Externí odkaz:
http://arxiv.org/abs/quant-ph/0603194
Autor:
Staudt, Matthias U., Hastings-Simon, Sara R., Afzelius, Mikael, Jaccard, Didier, Tittel, Wolfgang, Gisin, Nicolas
Publikováno v:
Optics Communications 266 (2006) 720-726
We studied optical coherence properties of the 1.53 $\mu$m telecommunication transition in an Er$^{3+}$-doped silicate optical fiber through spectral holeburning and photon echoes. We find decoherence times of up to 3.8 $\mu$s at a magnetic field of
Externí odkaz:
http://arxiv.org/abs/quant-ph/0603192
Autor:
Holmes, Alexander T., Jaccard, Didier
It has been proposed that there are two types of superconductivity in CeCu2Si2, mediated by spin fluctuations at ambient pressure, and by critical valence fluctuations around a charge instability at a pressure P_v \simeq 4.5 GPa. We present in detail
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509787
Autor:
Lortz, Rolf, Junod, Alain, Jaccard, Didier, Wang, Yuxing, Meingast, Christoph, Masui, Takahiko, Tajima, Setsuko
Publikováno v:
J. Phys.: Condens. Matter 17 (2005) 4135-4145
The evolution of the specific-heat anomaly in the overdoped range of a single crystal of the high-temperature superconductor YBa2Cu3O7 has been studied under influence of pressure up to 10 GPa, using AC calorimetry in a Bridgman-type pressure cell. W
Externí odkaz:
http://arxiv.org/abs/cond-mat/0503547
Publikováno v:
In Physica B: Physics of Condensed Matter 1 May 2018 536:150-154
Publikováno v:
J. Phys.:Condens. Matter 16, 5187(2004)
The Seebeck coefficient of a metal is expected to display a linear temperature-dependence in the zero-temperature limit. To attain this regime, it is often necessary to cool the system well below 1K. We put under scrutiny the magnitude of this term i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405030