Vibha Negi

9 Questions 7 Answers 0 Followers

Questions related from Vibha Negi

Does weak localization reduces the effective dimension of the system?

Disorder in some films develops Weak localization in the system and reduces the conductivity. 'Kaveh and Mott' has provided the quantum correction to the conductivity. In physical sense is it like...

09 September 2019 810 1 View

How to Measure differential conductance dI/dV experimentally?

Numerical derivation of IV curve is always a possibility to deduce dI/dV graph. How to measure in directly in voltage bias mode? What concept is required for it? What instrument are required to...

16 July 2019 9,591 2 View

Expression for Temperature dependence of Switiching current and Retrapping current for superconducting nanowires?

Dynamics of superconducting nanowires shunted with an extern... https://www.nature.com/articles/srep44569 In these article the temperature dependence is fitted using Kulik- Omel’yanchuk formula...

10 May 2019 6,752 1 View

What is the significance of the Second order ODE of a RLC crcuit in series with DC Source?

In the figure a second order differential is obtained for a RLC circuit with DC source in series. What is the significance of it when we have a capacitor in series? Why this circuit is not treated...

21 June 2018 7,144 3 View

In voltage bias mode does IV characteristic shows effect of phase slip process in Josephson junction (JJ)?

IVC of JJ in V bias show a plateau untill I=Ic and V=2Detla/E. How phase slip processes reflects in I(V) i.e. in voltage bias mode?

31 May 2018 1,592 1 View

How functioning of Josephson Junction change in Current Biasing and Voltage Biasing?

In weakly linked superconductors current Biasing results in Josephson Effect and voltage bias give Coulomb Blockade and Bloch Oscillation; but with condition of Impedance > R(Quantum). But how...

28 May 2018 9,678 8 View

Why we don't see any oscillation in IV of Josephson Junction?

AC Josephson effect states that dc voltage results in an alternating current across the junction. In IV characteristics when I exceeds I0 of JJ there should be an affect of AC of JJ which reflect...

22 May 2018 8,004 2 View

What is the physical significance of phase slips in 1D superconductors?

At the narrowest part of a superconducting nano wire order parameter fluctuates (Quantum or Thermal) to zero and phase can slip by 2pi. What is the physical significance of this? Mathematically...

14 May 2018 7,654 1 View

What are superconducting fluctuation?

https://journals.aps.org/pr/abstract/10.1103/PhysRev.156.396 States that "Fluctuation occurs which drives the amplitude of the order.parameter to zero at all points on a surface which seversthe...

19 June 2017 7,863 17 View