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I've been watching a lot of videos claiming to make monopoles either by dropping the temperature to 5k (-268° C) and splitting the magnet or by pouring molten metal through an induction system and was just wondering, how true these systems are?

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They are certainly not true monopoles, because they have not been discovered. (Although there are many theoretical reasons to think that they might exist.) –  Hunter Mar 8 at 12:04
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The videos you watched are mistaken. What condensed matter physicists have discovered aren't really magnetic monopoles, but are instead just quasiparticles that superficially resemble monopoles. The people who made the videos you watched probably just don't understand the difference. –  David H Mar 8 at 12:11

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