Qingyong Ren

4 Questions 7 Answers 0 Followers

Questions related from Qingyong Ren

Correlation between spin wave, spin density wave, spin excitation, spin fluctuation, spin gap, charge density wave and charge order?

I am currently reading some papers in the field of high Tc superconductivity. Some concepts confuse me. Can you tell me the definitions of spin wave, spin density wave, spin excitation, spin...

15 April 2017 343 8 View

Spiral magnetic structure in transition metal alloys & RKKY, D-M, Itinerant and direct interactions?

A transition from ferromagnetic structure to flat spiral structure was observed in a groups of transition metal alloys. The space group is Pnma and the magnetic Mn atoms occupy 4c position. How to...

21 July 2016 7,362 1 View

How to insert peak in propagation vector search using k-search?

One example is about ferromagnetic spiral structure (Fig-b). Besides the satellite peaks (hkl)+(Kx,Ky,Kz), the magnetic scattering also contributes on some (hkl) peaks. The propagation vector for...

12 July 2016 8,100 2 View

How can I determine the nearest neighbor in a crystal?

How to use Wigner-Seitz cell to calculate the nearest neighbor in a given crystal? What is the physical principal? And which (free) software can be used to do this calculation?

17 August 2015 4,214 4 View