Raman scattering, X-ray photoemission spectra and superconductivity of a tiny Ag diffusion to MgCNi3
Fa-Min Liu, J. Q. Li, C. Dong, T. M. Wang, Y. Q. Zhou, H. Chen
Abstract
The tiny Ag diffusion to MgCNi3 has been prepared by solid states reaction. Its structure was characterized by X-ray diffractometer (XRD). The results show that a small mount of Ag substitute for Ni sites, and much of Ag are in vacancy sites of the MgCNi3. We have further studied the surface properties of Ag-MgCNi3 using Raman scattering spectra, and X-ray photoemission spectra (XPS). Raman spectroscopy shows that the Ag-MgCNi3 has a special Raman peak around 842.1 cm-1 compared to that of C. The superconductor transition temperature (about 6.6 K) of Ag-MgCNi3 was lower than that of pure MgCNi3. It was interpreted properly by the conventional BCS phonon mechanism.
Create a lesson
Related papers
Ta-based S-I-S junctions for integrated superconducting Electronics
Trent Borman, Cameron Bullock, Cole Chason et al.
Nonreciprocal charge transport in quantum materials: From superconductors to magnetic systems
Boning Yu, Yalei Huang, Alltrin Dhanarajagopal et al.
Intra-unit-cell Josephson scanning tunneling spectroscopy of the cuprate Bi1.2Pb0.8Sr2CaCu2O8+δ
Fengyu Yao, Jiong Mei, Wenjin Mao et al.
Constraining the Superconducting Gap of Monolayer FeSe/SrTiO3 via Statistical Analysis and Tip-Height-Dependent Tunneling Spectroscopy
Dongwon Shin, Xiyou Peng, Kaleb McClure et al.
Acoustic damping limits superfluid helium as a thermal bath for mechanical resonators
Yunhu Huang, Mehri Ebrahimi, Alireza Rashedi et al.
Superinsulation, electric confinement in condensed matter
M. Cristina Diamantini, Carlo A. Trugenberger