We show that a Chern-Simons term for a gauge field describing a fluctuation of spins is induced by integrating out hole fields in the presence of spin-orbit coupling which originates from a buckling of the CuO2 plane. Through the Chern-Simons term, holes behave like skyrmion excitations in a spin system and become a superconducting state with dx2-y2 symmetry after the antiferromagnetic long-range order is destroyed.
Journal of the Physical Society of Japan
- Pub Date:
- June 2001
- Condensed Matter - Superconductivity;
- Condensed Matter - Strongly Correlated Electrons
- 4 pages, 1 figure, the condition of taking continuum limit included, references added, typos corrected, to be published in Journal of Physical Society of Japan