PMID- 14525204
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20031028
LR  - 20031003
IS  - 0031-9007 (Print)
IS  - 0031-9007 (Linking)
VI  - 91
IP  - 9
DP  - 2003 Aug 29
TI  - Electronic model for CoO2 layer based systems: chiral resonating valence bond 
      metal and superconductivity.
PG  - 097003
AB  - Takada et al. have reported superconductivity in layered Na(x)CoO(2)yH(2)O (T(c) 
      approximately equal to 5 K). We model a reference neutral CoO2 layer as an 
      orbitally nondegenerate spin-1/2 antiferromagnetic Mott insulator on a triangular 
      lattice and Na(x)CoO(2)yH(2)O 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 lead to a gapful d-wave superconducting state. A 
      chiral resonating valence bond (RVB) metal, a parity and time (PT) reversal 
      violating state with condensed RVB gauge fields, with a possible weak 
      ferromagnetism, and low temperature p-wave superconductivity are also suggested 
      at higher dopings.
FAU - Baskaran, G
AU  - Baskaran G
AD  - The Institute of Mathematical Sciences, C.I.T. Campus, Chennai 600 113, India.
LA  - eng
PT  - Journal Article
DEP - 20030827
PL  - United States
TA  - Phys Rev Lett
JT  - Physical review letters
JID - 0401141
EDAT- 2003/10/04 05:00
MHDA- 2003/10/04 05:01
CRDT- 2003/10/04 05:00
PHST- 2003/04/02 00:00 [received]
PHST- 2003/10/04 05:00 [pubmed]
PHST- 2003/10/04 05:01 [medline]
PHST- 2003/10/04 05:00 [entrez]
AID - 10.1103/PhysRevLett.91.097003 [doi]
PST - ppublish
SO  - Phys Rev Lett. 2003 Aug 29;91(9):097003. doi: 10.1103/PhysRevLett.91.097003. Epub 
      2003 Aug 27.