ce substitution
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2021 ◽  
pp. 103547
Author(s):  
Seetharamulu Podila ◽  
Hafedh Driss ◽  
Arshid M. Ali ◽  
Abdulrahim A. Al-Zahrani ◽  
Muhammad A. Daous

2021 ◽  
Vol 359 ◽  
pp. 115534
Author(s):  
Amir Masoud Dayaghi ◽  
Reidar Haugsrud ◽  
Marit Stange ◽  
Yngve Larring ◽  
Ragnar Strandbakke ◽  
...  

2020 ◽  
Vol 147 ◽  
pp. 109648 ◽  
Author(s):  
G.M. Pugliese ◽  
F. Stramaglia ◽  
F.G. Capone ◽  
M.Y. Hacisalihoglu ◽  
R. Kiyama ◽  
...  

2020 ◽  
Vol 200 ◽  
pp. 502-509
Author(s):  
Zhongchong Lin ◽  
Liang Zha ◽  
Fanggui Wang ◽  
Zhou Liu ◽  
Rui Wu ◽  
...  

2020 ◽  
Vol 32 (21) ◽  
pp. 9268-9276
Author(s):  
Kasey P. Devlin ◽  
Jason H. Grebenkemper ◽  
Kathleen Lee ◽  
Giacomo Cerretti ◽  
Sabah K. Bux ◽  
...  

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1810
Author(s):  
Paola Romano ◽  
Francesco Avitabile ◽  
Angela Nigro ◽  
Gaia Grimaldi ◽  
Antonio Leo ◽  
...  

We performed a detailed investigation of the superconducting properties of polycrystalline Pr1−xCexPt4Ge12 pellets. We report the effect of Ce substitution, for x = 0.07, on magnetic field phase diagram H-T. We demonstrate that the upper critical field is well described by the Ginzburg–Landau model and that the irreversibility field line has a scaling behaviour similar to cuprates. We also show that for magnetic fields lower than 0.4 T, the activation energy follows a power law of the type ?−1/2, suggesting a collective pinning regime with a quasi-2D character for the Ce-doped compound with x = 0.07. Furthermore, by means of a point contact Andreev reflection spectroscopy setup, we formed metal/superconductor nano-junctions as small as tens of nanometers on the PrPt4Ge12 parent compound (x = 0). Experimental results showed a wide variety of conductance features appearing in the dI/dV vs. V spectra, all explained in terms of a modified Blonder–Tinkham–Klapwijk model considering a superconducting order parameter with nodal directions as well as sign change in the momentum space for the sample with x = 0. The numerical simulations of the conductance spectra also demonstrate that s-wave pairing and anisotropic s-waves are unsuitable for reproducing experimental data obtained at low temperature on the un-doped compound. Interestingly, we show that the polycrystalline nature of the superconducting PrPt4Ge12 sample can favour the formation of an inter-grain Josephson junction in series with the point contact junction in this kind of experiments.


2019 ◽  
Vol 475 ◽  
pp. 1-4 ◽  
Author(s):  
Le-Zhong Li ◽  
Xiao-Xi Zhong ◽  
Rui Wang ◽  
Xiao-Qiang Tu ◽  
Lei He ◽  
...  

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