Temperature dependence of the Hall coefficient, RH, has been investigated in charge-spin stripe-ordered La-214 high-Tc superconductors. Using the simplest stripe-ordered system of La 2-xBaxCuO4, it has been clarified that both the behavior of RH and its sign exhibit significant dependences on the hole concentration. That is, RH is zero in the ground state of the charge-spin stripe order at x=1/8, while it is negative in the less-stabilized state of the charge stripe for x<1/8. These are interpreted as owing to the delicate balance of the contributions of the holelike Fermi surface and the possible electron pocket arising from the formation of the charge-spin stripe order.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2011 Feb 11|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics