J.H.P. Colpa

Diagonalization of the quadratic boson hamiltonian

J.H.P. Colpa · Physica A Statistical Mechanics and its Applications · 1978 · 425 citations

Natural Sciences, Mathematics, Physics +12

On the heat capacity of the (nearly) quadratic heisenberg, , ferromagnet

J.H.P. Colpa · Physica · 1972 · 64 citations

Natural Sciences, Materials Science, Physics +14

Dipole fields and electric-field gradients in their dependence on the macroscopic and microscopic crystal parameters for orthorhombic and hexagonal lattices. I

J.H.P. Colpa · Physica · 1971 · 63 citations

Natural Sciences, Materials Science, Physics +17

Transition temperatures of weakly anisotropic layer-type magnets. Dependence on anisotropy

L.J. de Jongh, P. Bloembergen, J.H.P. Colpa · Physica · 1972 · 61 citations

Natural Sciences, Materials Science, Physics +12

Diagonalisation of the quadratic fermion Hamiltonian with a linear part

J.H.P. Colpa · Journal of Physics A Mathematical and General · 1979 · 32 citations

Natural Sciences, Physics, Mathematical Physics +12