We have extended the coupled-cluster approximation to the spin-lattice problem. The
efficiency of this method is demonstrated on simple antiferromagnetic Heisenberg models in …

Precise specific-heat measurements were made on low-density samples of bcc He 3 in the
vicinity of the various magnetic ordering transitions. The data obtained for magnetic fields of …

The multiple-exchange Hamiltonian used to describe spin-spin interactions in solid He 3 is
developed in terms of Pauli spin operators for an arbitrary number of particles in the …

We have performed new measurements of the P− T relation along the He 3 melting curve for
temperatures between 0.4 and 15 mK in zero magnetic field. The temperature was …

Over the past 20 years our understanding of cooperative magnetic phenomena in solid 3 He
has expanded greatly. Starting from the concept of atomic exchange, the author explains …

The nuclear magnetic specific heat of bcc solid He 3 of molar volume 24.15 cm 3/mole has
been measured as a function of temperature T and magnetic field B for 0.6 mK< T< 40 mK …

The high-temperature series expansions with a multiple-exchange Hamiltonian including
the most important two, three, and four-particle exchange processes for the bcc and hcp …

The zero-temperature lower critical field B c 1 (0) between the two nuclear antiferromagntic
phases of bcc He 3 has been determined as a function of molar volume from pressure …

Entropy and magnetization curves for solid 3 He as obtained from multiple exchange mean
field calculations are presented as a function of temperature and magnetic field, and …

The model of Hiller and Harris [J. Chem. Phys. 98, 2077 (1993)] is modified by a Jastrow
correlation function to incorporate short‐range correlations. The resulting model describes …