Zobrazeno 1 - 10
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pro vyhledávání: '"Knafo, W"'
A structural orthorhombic-to-tetragonal phase transition was recently discovered in the heavy-fermion compound UTe$_2$ at a pressure $p^*\simeq3-8$~GPa [Honda \textit{et al.}, J. Phys. Soc. Jpn. \textbf{92}, 044702 (2023); Huston \textit{et al.}, Phy
Externí odkaz:
http://arxiv.org/abs/2403.20277
Autor:
Knafo, W., Thebault, T., Manuel, P., Khalyavin, D. D., Orlandi, F., Ressouche, E., Beauvois, K., Lapertot, G., Kaneko, K., Aoki, D., Braithwaite, D., Knebel, G., Raymond, S.
The discovery of multiple superconducting phases in UTe2 boosted research on correlated-electron physics. This heavy-fermion paramagnet was rapidly identified as a reference compound to study the interplay between magnetism and unconventional superco
Externí odkaz:
http://arxiv.org/abs/2311.05455
Autor:
Knebel, G., Pourret, A., Rousseau, S., Marquardt, N., Braithwaite, D., Honda, F., Aoki, D., Lapertot, G., Knafo, W., Seyfarth, G., Brison, J-P., Flouquet, J.
The electrical resistivity of the unconventional superconductor UTe$_2$ shows very anisotropic behavior in the normal state depending on the current direction. In the present paper we show that the maximum in the resistivity $\rho_c$ for current appl
Externí odkaz:
http://arxiv.org/abs/2306.16273
Autor:
Qureshi, N., Bourdarot, F., Ressouche, E., Knafo, W., Iga, F., Michimura, S., Regnault, L. -P., Duc, F.
We present a single-crystal neutron diffraction study on the Shastry-Sutherland lattice system TbB$_4$ at zero magnetic field and under pulsed high magnetic fields up to 35 T applied along the crystallographic $c$ axis. While our results confirm the
Externí odkaz:
http://arxiv.org/abs/2209.02061
Autor:
Thebault, T., Knafo, W., Vališka, M., Lapertot, G., Pourret, A., Aoki, D., Knebel, G., Braithwaite, D.
Publikováno v:
Phys. Rev. B 106, 144406 (2022)
Multiple unconventional superconducting phases are suspected to be driven by magnetic fluctuations in the heavy-fermion paramagnet UTe$_2$, and a challenge is to identify the signatures of the electronic correlations, including the magnetic fluctuati
Externí odkaz:
http://arxiv.org/abs/2205.15789
The discovery of superconductivity in the heavy-fermion paramagnet UTe$_2$ has attracted a lot of attention, particularly due to the reinforcement of superconductivity near pressure- and magnetic-field-induced magnetic quantum phase transitions. A ch
Externí odkaz:
http://arxiv.org/abs/2108.13247
Autor:
Raymond, S., Knafo, W., Knebel, G., Kaneko, K., Brison, J. -P., Flouquet, J., Aoki, D., Lapertot, G.
We investigate the spin dynamics in the superconducting phase of UTe$_{2}$ by triple-axis inelastic neutron scattering on a single crystal sample. At the wave-vector $\bf{k_1}$=(0, 0.57, 0), where the normal state antiferromagnetic correlations are p
Externí odkaz:
http://arxiv.org/abs/2107.13914
Autor:
Knafo, W., Knebel, G., Steffens, P., Kaneko, K., Rosuel, A., Brison, J. -P., Flouquet, J., Aoki, D., Lapertot, G., Raymond, S.
Publikováno v:
Phys. Rev. B 104, 100409 (2021)
Inelastic-neutron-scattering measurements were performed on a single crystal of the heavy-fermion paramagnet UTe$_2$ above its superconducting temperature. We confirm the presence of antiferromagnetic fluctuations with the incommensurate wavevector $
Externí odkaz:
http://arxiv.org/abs/2106.13087
Autor:
Knafo, W., Nardone, M., Valiska, M., Zitouni, A., Lapertot, G., Aoki, D., Knebel, G., Braithwaite, D.
Publikováno v:
Communications Physics 4, 40 (2021)
Superconductivity induced by a magnetic field near metamagnetism is a striking manifestation of magnetically-mediated superconducting pairing. After being observed in itinerant ferromagnets, this phenomenon was recently reported in the orthorhombic p
Externí odkaz:
http://arxiv.org/abs/2007.06009
Publikováno v:
Phys. Rev. B 100, 094421 (2019)
We report a high-magnetic-field study of the itinerant ferromagnet URhSi. Magnetization and electrical resistivity were measured under magnetic fields $\mu_0H$ up to 58~T applied along the directions $\mathbf{a}$, $\mathbf{b}$, and $\mathbf{c}$ of th
Externí odkaz:
http://arxiv.org/abs/1909.01810