  We examine spectral properties of doped holes dressed with surrounding spin
cloud in the t-J model. These composite-hole excitations well characterize
prominent band structures in the angle-resolved photoemission spectrum. In
one-dimensional (1D) case at half-filling, we identify the composite operators
that separately pick up the spinon and holon branches, respectively. After hole
doping, we find that the composite hole excitations with string-like spins tend
to be localized at k=\pi/2 in the momentum space. This means that such
composite excitations should be actual electronic excitations, since the spinon
and holon branches merge together at this momentum. In 2D case, we find that
the composite excitations with more non-local spin fluctuation have stronger
intensity near the Fermi level. The composite band structure along diagonal
(0,0)-(\pi,\pi) direction in 2D has some similarity to that in 1D, and such
non-local spin fluctuation plays an important role on the formation of the
pseudogap in high-Tc cuprates.
