Surface fields and emergence of long-range couplings in classical uniaxial ferromagnetic arrays
Critical wetting is of crucial importance for the phase behaviour of a simple fluid or Ising magnet confined between walls that exert opposing surface fields so that one wall favours liquid (spin up), while the other favours gas (spin down). We show that arrays of boxes filled with fluid or Ising ma...
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Main Authors | , , |
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Format | Journal Article |
Language | English |
Published |
29.12.2023
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Subjects | |
Online Access | Get full text |
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Summary: | Critical wetting is of crucial importance for the phase behaviour of a simple
fluid or Ising magnet confined between walls that exert opposing surface fields
so that one wall favours liquid (spin up), while the other favours gas (spin
down). We show that arrays of boxes filled with fluid or Ising magnet and
linked by channels with such ``opposing'' walls can exhibit long-range
cooperative effects, on a length scale far exceeding the bulk correlation
length. We give the theoretical foundations of these long-range couplings by
using a lattice gas (Ising model) description of a system. |
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DOI: | 10.48550/arxiv.2312.17717 |