Dinesh Kumar

10 Questions 16 Answers 0 Followers

Questions related from Dinesh Kumar

What is your opinion on the recent unpublished work by an Indian group titled 'Evidence for superconductivity at ambient temperature and pressure'?

I have looked at the paper thoroughly seems excellent results but still can't believe it can be possible. Need you opinion.

29 July 2018 4,550 5 View

What is the meaning of dirty and clean superconductors?

Do they have separate GL equations?

05 February 2016 8,911 6 View

How do we measure Miessner fraction and Shielding fraction for superconductors?

I have attached a schematic can anyone please tell me if I am right?

09 December 2015 302 4 View

Why is the susceptibility for real superconductors always less than -1?

For an ideal superconductors susceptibility is -1, however, for real superconductors it is always less then -1, why? When one say Susceptibility=-1, does it mean (emu/cm3)/Oe? or do it need to be...

27 November 2015 8,043 12 View

What is a reversible and irreversible fields in superconductors?

27 November 2015 1,891 2 View

For the estimation of Hc2(0) in superconductors, we use WHH equation, what does the factor 0.692 in the WHH equation stand for?

In the equation Hc2(0)=-0.692*Tc*dHc2/dT at T=Tc, why does 0.692 comes into picture?

27 November 2015 9,311 2 View

What is an irreversible field in superconductors?

How do we find out the irreversible field from M-H loop, how is it different from Hc2(0) obtained from rho vs T plot?

10 October 2015 4,825 5 View

What is the effect of core hole relaxation on the XPS peak position (BE) of a material?

Can anyone explain how does such a relaxation process effect the XAS or XPS peak position, I have tried to obtain materials online however those available seems to be filled with mathematical...

15 July 2015 4,257 5 View

How do I fit Fano asymmetric peak?

In the attached paper, fig.3 shows the asymmetric fit using eqn(1), what I can make out is that I is the dependent variable whereas w is the independent variable while wo -dwo is a constant, while...

31 January 2015 3,540 23 View

What is Ginzburg Landau (GL) theory? Why do we also need Werthamer-Helfand-Hohenberg (WHH) theory?

I have plotted Hc2 vs T, how do I fit (extrapolate it) to get Hc2(0). Is GL theory valid for type-II superconductors?

07 July 2014 6,522 2 View