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.
|ジャーナル||Physical Review B - Condensed Matter and Materials Physics|
|出版ステータス||Published - 2011 2 11|
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials