An Electronic Model for $CoO_2$ layer based systems: Chiral RVB metal and Superconductivity

Details An Electronic Model for $CoO_2$ layer based systems: Chiral RVB metal and Superconductivity An Electronic Model for $CoO_2$ layer based systems: Chiral RVB metal and Superconductivity

2003-03-31

arxiv.org/abs/cond-mat/0303649v2

Physical Review Letters, 91, 097003 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages of LaTex file, 6 figures in eps files. Typos and minor corrections made

Scientific paper

10.1103/PhysRevLett.91.097003

Takada et al. have reported superconductivity in layered $Na__x CoO_2.yH_2O$ ($T_c \approx5 K$) and more recently Wen et al. in $A_xCoO_{2+\delta}$ ($A = Na,K$)(\tc$\approx~31 K$). We model a reference neutral \cob layer as an orbitally non-degenerate spin-\half antiferromagnetic Mott insulator on a triangular lattice and $Na__x CoO_2.yH_2O$ and $A_xCoO_{2+\delta}$ as electron doped Mott insulators described by a t-J model. It is suggested that at optimal doping chiral spin fluctuations enhanced by the dopant dynamics leads to a d-wave superconducting state. A chiral RVB metal, a PT violating state with condensed RVB gauge fields, with a possible weak ferromagnetism and low temperature p-wave superconductivity are also suggested at higher dopings.

Affiliated with

Also associated with

No associations

Rating

An Electronic Model for $CoO_2$ layer based systems: Chiral RVB metal and Superconductivity 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 An Electronic Model for $CoO_2$ layer based systems: Chiral RVB metal and Superconductivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Electronic Model for $CoO_2$ layer based systems: Chiral RVB metal and Superconductivity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-101799