| Issue |
EPL
Volume 88, Number 6, December 2009
|
|
|---|---|---|
| Article Number | 67009 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/88/67009 | |
| Published online | 04 January 2010 | |
Fermi-surface pockets in magnetic underdoped cuprates from first principles
CNR-INFM SLACS, and Dipartimento di Fisica of Università di Cagliari - I-09042 Monserrato (CA), Italy, EU
Corresponding author: alessio.filippetti@dsf.unica.it
Received:
13
July
2009
Accepted:
24
November
2009
Using an innovative first-principles band theory enabling the exploration of Mott-insulating magnetic cuprates, we study the Fermi surface of underdoped Y
CaxBa2Cu3O6 in a selection of magnetically ordered and polaronic states. Inclusion of doping on the antiferromagnetically ordered CuO2 planes causes the appearance of small, hole-like Fermi-surface pockets centered around the nodal points. The pocket properties (area, mass) depend on the underlying magnetic ordering (e.g. change with polaron formation), although the hole-like character is rather persistent for all the examined magnetic states.
PACS: 71.18.+y – Fermi surface: calculations and measurements; effective mass, g factor / 74.25.Jb – Electronic structure / 74.25.Ha – Magnetic properties
© EPLA, 2009
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