This chapter reviews the current theoretical and experimental
picture of the vortex-lattice structure in conventional and high-*T*_{c}
superconductors. The volume of published work on this topic is
large. The purpose of this chapter is not to provide an exhaustive
compilation of these studies, but rather to highlight
the most significant developments through a discussion of
selected references.
The initial part of this chapter discusses the general structure
of the vortex lattice and the corresponding field distribution,
and how this structure is affected by pinning, thermal fluctuations
and anisotropy. Next, the problems associated with modelling the
field distribution with a simple Gaussian function are discussed.
The second half of the chapter concerns itself with a more accurate
way of modelling the field distribution associated with the vortex
lattice. In particular, the vortex-lattice structure in both an
*s*-wave and a *d*_{x2-y2}-wave superconductor
are discussed in some detail. In addition, vortex-lattice
imaging experiments in both conventional and high-*T*_{c} superconductors
are reviewed.

- 4.1 The Field Distribution of the Vortex Lattice
- 4.2 Pinning, Thermal Fluctuations, Dimensional Crossover and Melting
- 4.3 Gaussian Field Distribution Analysis
- 4.4 Field Distribution of the Vortex Lattice