Spin and charge order around vortices and impurities in high-T(c) superconductors.
A comparative study is made for the spin and charge structure around superconducting vortices and unitary impurities, by solving self-consistently an effective Hamiltonian including interactions for both antiferromagnetic spin-density wave (SDW) and d-wave superconducting orderings. Around vortices, we show the induction of an SDW two-dimensionally modulated with a period of eight lattice constants (8a(0)) and an associated charge-density wave (CDW) with a period of 4a(0), which explains very well recent experimental observations. In the case of unitary impurities, an SDW modulation with identical periodicity, but without an associated CDW, is also predicted.
Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA.
Jian-Xin
JX
Zhu
Ivar
I
Martin
A R
AR
Bishop