Diapositiva 1

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NEMATIC
SMECTIC
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director
3 x 3 tensor with two independent eigenvalues
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z
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3He/4He mixture
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Physical system Variable 1 Variable 2
3He-4He mixtures density or concentration Temperature
Vortex-lattice melting Magnetic field Temperature
Liquid crystals Concentration Temperature
Cold Fermi gas Spin polarisation Temperature
Ferroelectrics Pressure or electric field Temperature
Metamagnets Pressure or magnetic field Temperature
Structural transition Pressure Temperature
Melting on graphite Coverage Temperature
Solidification Pressure Temperature
Taylor-Couette vortex pair Aspect ratio Rotation rate