Abstract
The surprise discovery of superconductivity below 5 K in sodium cobalt oxides when hydrated with water has caught the attention of experimentalists and theorists alike. Most explanations for its occurence have focused heavily on the properties of some small elliptically shaped pockets predicted to be the electronically dominant Fermi surface sheet, but direct attempts to look for them have instead cast serious doubts over their existence. Here we present evidence that these pockets do indeed exist, based on bulk measurements of the electron momentum distribution in unhydrated and hydrated sodium cobalt oxides using the technique of x-ray Compton scattering.
| Original language | English |
|---|---|
| Article number | 052509 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 76 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Aug 22 2007 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides. / Laverock, J.; Dugdale, S. B.; Duffy, J. A.; Wooldridge, J.; Balakrishnan, G.; Lees, M. R.; Zheng, Guo-Qing; Chen, D.; Lin, C. T.; Andrejczuk, A.; Itou, M.; Sakurai, Y.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 76, No. 5, 052509, 22.08.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Elliptical hole pockets in the Fermi surfaces of unhydrated and hydrated sodium cobalt oxides
AU - Laverock, J.
AU - Dugdale, S. B.
AU - Duffy, J. A.
AU - Wooldridge, J.
AU - Balakrishnan, G.
AU - Lees, M. R.
AU - Zheng, Guo-Qing
AU - Chen, D.
AU - Lin, C. T.
AU - Andrejczuk, A.
AU - Itou, M.
AU - Sakurai, Y.
PY - 2007/8/22
Y1 - 2007/8/22
N2 - The surprise discovery of superconductivity below 5 K in sodium cobalt oxides when hydrated with water has caught the attention of experimentalists and theorists alike. Most explanations for its occurence have focused heavily on the properties of some small elliptically shaped pockets predicted to be the electronically dominant Fermi surface sheet, but direct attempts to look for them have instead cast serious doubts over their existence. Here we present evidence that these pockets do indeed exist, based on bulk measurements of the electron momentum distribution in unhydrated and hydrated sodium cobalt oxides using the technique of x-ray Compton scattering.
AB - The surprise discovery of superconductivity below 5 K in sodium cobalt oxides when hydrated with water has caught the attention of experimentalists and theorists alike. Most explanations for its occurence have focused heavily on the properties of some small elliptically shaped pockets predicted to be the electronically dominant Fermi surface sheet, but direct attempts to look for them have instead cast serious doubts over their existence. Here we present evidence that these pockets do indeed exist, based on bulk measurements of the electron momentum distribution in unhydrated and hydrated sodium cobalt oxides using the technique of x-ray Compton scattering.
UR - http://www.scopus.com/inward/record.url?scp=34548210845&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548210845&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.76.052509
DO - 10.1103/PhysRevB.76.052509
M3 - Article
AN - SCOPUS:34548210845
VL - 76
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 5
M1 - 052509
ER -