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  • 2 days ago
Researchers at MIT have discovered distinct behaviors in how two electronic phases reorganize within erbium tritelluride, a notable quantum material. The team subjected atomically thin samples to temperatures around -230°C (-382°F) and employed ultrafast laser pulses to disturb the charge density waves of the material. By analyzing the energy and momentum of the returning electrons, they found that one phase returned uniformly, indicating a second-order transition, while the less robust phase exhibited isolated regions that grew, suggesting a first-order transition. These results, documented in Nature Physics, may provide insights into the interactions of competing quantum states in complex materials like superconductors.

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00:00MIT physicists have made a surprising discovery inside a quantum crystal.
00:04The team studied erbium tritelluride, a material with unusual electronic behavior.
00:10Inside it, electrons can form repeating patterns called charge density waves.
00:15Researchers cooled the material to about minus 230 degrees Celsius.
00:20Then, they hit it with an ultra-fast laser pulse.
00:24A second laser pulse helped them watch how the electrons reorganized.
00:28And that's where things got interesting.
00:30The two electronic phases did not return in the same way.
00:34The stronger phase rebuilt itself smoothly across the material.
00:38But the weaker phase appeared in small pockets first.
00:42Those pockets then expanded until the pattern returned.
00:45Scientists say this reveals two fundamentally different types of phase transitions.
00:50The findings, published in Nature Physics, could help explain how quantum states interact.
00:55And that may offer new clues about superconductivity and other advanced materials.
01:01Disclosure.
01:01This video contains stock footage and content created or enhanced using AI-assisted tools.
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