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"Scientists have finally observed a long-theorized quasiparticle that behaves like it has mass in one direction… and becomes massless in the other
This strange phenomenon, called a Semi-Dirac fermion, exists only inside certain quantum materials — not in free space.
It was discovered in a crystal called ZrSiS, using extreme conditions: ultra-cold temperatures, powerful magnetic fields, and precision laser measurements.
Why it matters?
It bends the rules of how particles are “supposed” to behave
Opens doors to new electronic and optical technologies
Could inspire future quantum devices with direction-dependent speed and conductivity
Shows how bizarre and powerful quantum materials can be
A particle that changes its mass depending on which way it moves?"
That’s not sci-fi — that’s real physics in 2025.

"Scientists have finally observed a long-theorized quasiparticle that behaves like it has mass in one direction… and becomes massless in the other
This strange phenomenon, called a Semi-Dirac fermion, exists only inside certain quantum materials — not in free space.
It was discovered in a crystal called ZrSiS, using extreme conditions: ultra-cold temperatures, powerful magnetic fields, and precision laser measurements.
Why it matters?
A particle that changes its mass depending on which way it moves?"
That’s not sci-fi — that’s real physics in 2025.


























