4 papers
Spin resonance peak in NaCoOHO superconductors: A probe of the pairing symmetry
Jian-Xin Li, Z. D. Wang
Motivated by the recent discovery of superconductivity in layered NaCoOHO compound, we investigate theoretically the spin dynamics in the superconducting s…
Symmetry Does Not Allow Canting of Spins in La_{1.4}Sr_{1.6}Mn_2O_7
Fan Zhong, Z. D. Wang
We analyze the symmetry of all possible magnetic structures of bilayered manganites La_{2-2x}Sr_{1+2x}Mn_2O_7 with doping 0.3 <= x < 0.5 and formulate a corresponding Landau theory…
Zeeman Coupling and Abnormal Thermal Conductivities in BSCCO Superconductors
Qiang-Hua Wang, Z. D. Wang
Using the path-integral formulation we derive microscopically a Ginzburg-Landau free energy with a Zeeman coupling between the magnetic field and the orbital angular momentum of th…
Linear spin and orbital wave theory for undoped manganites
R. Y. Gu, Shun-Qing Shen, Z. D. Wang +1
We present a linear spin and orbital wave theory to account for the spin and orbital orderings observed experimentally in undoped manganite. It is found that the anisotropy of the…