Zobrazeno 1 - 10
of 197
pro vyhledávání: '"Keren, Amit"'
Autor:
Panda, Kartik, Potashnikov, Daniel, Pesach, Asaf, Barbier, Maxime, Eyal, Anna, Ouisse, Thierry, Keren, Amit, Bachar, Nimrod
We report the investigation of electronic collective modes in rare-earth-based magnets (Mo$_{2/3}$RE$_{1/3}$)$_2$AlC (also known as RE-$i$-MAX phases), where RE=Gd, Yb, and Dy, using single crystal samples. A detailed investigation of the Raman spect
Externí odkaz:
http://arxiv.org/abs/2408.02436
Publikováno v:
SciPost Phys. 16, 148 (2024)
The in-plane and out-of-plane superconducting stiffness of LSCO rings appear to vanish at different transition temperatures, which contradicts thermodynamical expectation. In addition, we observe a surprisingly strong dependence of the out-of-plane s
Externí odkaz:
http://arxiv.org/abs/2308.15540
Autor:
Mangel, Itay, Keren, Amit
A long excitation coil piercing a superconducting (SC) ring is used to generate ever increasing persistent current in the ring, until the current destroys the order parameter. Given that the penetration depth $\lambda$ is known, this experiment measu
Externí odkaz:
http://arxiv.org/abs/2308.06757
Publikováno v:
Peri, A.; Mangel, I.; Keren, A. Superconducting Stiffness and Coherence Length of FeSe0.5Te0.5 Measured in a Zero-Applied Field. Condens. Matter 2023, 8, 39. https://doi.org/10.3390/condmat8020039
Superconducting stiffness $\rho_s$ and coherence length $\xi$ are usually determined by measuring the penetration depth $\lambda$ of a magnetic field and the upper critical field $H_{c2}$ of a superconductor (SC), respectively. However, in magnetic S
Externí odkaz:
http://arxiv.org/abs/2305.01926
A superconducting (SC) mixed state occurs in type-II superconductors where the upper critical field Hc2 is higher than the thermodynamic critical field Hc. When an applied field is in between these fields, the free energy depends weakly on the order
Externí odkaz:
http://arxiv.org/abs/2204.02888
Based on the London equation, we use a rotor-free vector potential ${\bf A}$, and current measurements by a SQUID, to determine the superconducting Pearl length $\Lambda$, and coherence length $\xi$, of ultra-thin, ring shaped, MoSi films, as a funct
Externí odkaz:
http://arxiv.org/abs/2110.09093
We follow the evolution of Copper and Oxygen two-hole excitations, in optimally doped (Ca$_{x}$La$_{1-x}$)(Ba$_{1.75-x}$La$_{0.25+x} $)Cu$_{3}$O$_{y}$ for $x=0.1$ and $x=0.4$. The spectra have contributions from band states as well as a localized mul
Externí odkaz:
http://arxiv.org/abs/2107.09181
Autor:
Potashnikov, Daniel, Caspi, Elad Nisan, Pesach, Asaf, Tao, Quanzheng, Rosen, Johanna, Sheptyakov, Denis, Evans, Hayden A., Ritter, Clemens, Salman, Zaher, Bonfa, Pietro, Ouisse, Thierry, Barbier, Maxime, Rivin, Oleg, Keren, Amit
We report muon spin rotation ($\mu$SR) and neutron diffraction on the rare-earth based magnets (Mo$_{2/3}$RE$_{1/3}$)$_2$AlC, also predicted as parent materials for 2D derivatives, where RE = Nd, Gd (only ($\mu$SR), Tb, Dy, Ho and Er. By crossing inf
Externí odkaz:
http://arxiv.org/abs/2105.14555
We study the Ginzburg-Landau equations of super-conductivity describing the experimental setup of a Stiffnessometer device. In particular, we consider the nonlinear regime which reveals the impact of the superconductive critical current on the Stiffn
Externí odkaz:
http://arxiv.org/abs/2005.11686
Autor:
Keren, Amit, Crump, Wayne, Mallett, Ben P. P., Chong, Shen V., Keren, Itai, Luetkens, Hubertus, Tallon, Jeffery L.
Publikováno v:
Physical Review B 100, 144512 (2019)
We address what seemed to be a contradiction between the lanthanide series REBa$_2$Cu$_3$O$_y$ (RE123) and the charge-compensated series (Ca$_{x}$La$_{1-x}$)(Ba$_{1.75-x}$La$_{0.25+x} $)Cu$_{3}$O$_{y}$ (CLBLCO) regarding the superexchange ($J$) depen
Externí odkaz:
http://arxiv.org/abs/1910.12251