Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C

Details Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C

2001-08-21

arxiv.org/abs/cond-mat/0108333v1

Physics

Condensed Matter

Superconductivity

10 pages with 10 embedded figures, submitted to PRB

Scientific paper

10.1103/PhysRevB.65.064506

We present optical conductivity data for Lu(Ni$_{1-x}$Co$_x$)$_2$B$_2$C over a wide range of frequencies and temperatures for x=0 and x=0.09. Both materials show evidence of being good Drude metals with the infrared data in reasonable agreement with dc resistivity measurements at low frequencies. An absorption threshold is seen at approximately 700 cm-1. In the cobalt-doped material we see a superconducting gap in the conductivity spectrum with an absorption onset at 24 +/- 2 cm-1 = 3.9$ +/- 0.4 k_BT_c suggestive of weak to moderately strong coupling. The pure material is in the clean limit and no gap can be seen. We discuss the data in terms of the electron-phonon interaction and find that it can be fit below 600 cm-1 with a plasma frequency of 3.3 eV and an electron-phonon coupling constant lambda_{tr}=0.33 using an alpha^{2}F(omega) spectrum fit to the resistivity.

Affiliated with

Also associated with

No associations

Rating

Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared and optical properties of pure and cobalt-doped LuNi_2B_2C will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-622849