Demonstrating the model nature of the high-temperature superconductor HgBa$_2$CuO$_{4+Δ}$

Details Demonstrating the model nature of the high-temperature superconductor HgBa$_2$CuO$_{4+Δ}$ Demonstrating the model nature of the high-temperature superconductor HgBa$_2$CuO$_{4+Δ}$

2008-05-10

arxiv.org/abs/0805.1497v1

Phys. Rev. B 78, 054518 (2008)

Physics

Condensed Matter

Materials Science

15 pages, 6 Figures

Scientific paper

10.1103/PhysRevB.78.054518

The compound HgBa$_2$CuO$_{4+\Delta}$ (Hg1201) exhibits a simple tetragonal crystal structure and the highest superconducting transition temperature (T$_c$) among all single Cu-O layer cuprates, with T$_c$ = 97 K (onset) at optimal doping. Due to a lack of sizable single crystals, experimental work on this very attractive system has been significantly limited. Thanks to a recent breakthrough in crystal growth, such crystals have now become available. Here, we demonstrate that it is possible to identify suitable heat treatment conditions to systematically and uniformly tune the hole concentration of Hg1201 crystals over a wide range, from very underdoped (T$_c$ = 47 K, hole concentration p ~ 0.08) to overdoped (T$_c$ = 64 K, p ~ 0.22). We then present quantitative magnetic susceptibility and DC charge transport results that reveal the very high-quality nature of the studied crystals. Using XPS on cleaved samples, we furthermore demonstrate that it is possible to obtain large surfaces of good quality. These characterization measurements demonstrate that Hg1201 should be viewed as a model high-temperature superconductor, and they provide the foundation for extensive future experimental work.

Affiliated with

Also associated with

No associations

Rating

Demonstrating the model nature of the high-temperature superconductor HgBa$_2$CuO$_{4+Δ}$ 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 Demonstrating the model nature of the high-temperature superconductor HgBa$_2$CuO$_{4+Δ}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Demonstrating the model nature of the high-temperature superconductor HgBa$_2$CuO$_{4+Δ}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-327749