Topological insulator is useless.

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Useless topological computer

Topological insulator must be cooled to very low temperature, so useless, energy-inefficient, contrary to fake news.

(Fig.1)  Nobel prize was given to useless topological insulator.

Topological insulator is deadend. useless.

Topological insulator needing very low temperature is extremely energy-inefficient and impractical forever.

The 2-5th, last paragraphs of this hyped news (10//2025) say

"A topological insulator can be imagined as a material that is a perfect insulator on the inside... At its edges, however, it behaves like an almost lossless electron highway (= false )."

"The phenomenon behind this is known as the quantum spin Hall effect (QSHE) (= irrelevant to spin )"

"its practical application has faced considerable challenges to date, mainly because topological insulators usually only exhibit their coveted properties at extremely low temperatures—just above absolute zero, which is around -273°C"  ← useless topological insulator needs very low temperature

"has now developed a topological insulator that exhibits the desired effect even at significantly higher temperatures: around -213°C"  ← still impractically-low temperature of only 60K.

"opening the door to a new generation of energy-efficient and powerful devices."  ← fake news.

Useless device needing very low temperature

Topological insulator is useless, just showing some electric resistance only at extremely-low temperature of 60K.

↑ This research paper ↓

p.1-abstract and p.5-Discussion say nothing about "energy-efficient powerful device", contrary to the above overhyped fake news.

p.2-Fig.1E shows, this topological insulator device is very bulky (= 10μm ), impractical compared to today's practical transistor of only ~50nm.

p.4-Fig.4 just measured some electric resistance R close to h/2e² at very low temperature of 60K.

Useless topological insulator got Nobel.

Topological insulator just showing some electric resistance at extremely low temperature is useless, far from an energy-efficient powerful device.

↑ This experiment just measured some electric resistance close to h/2e² (= which resistance or conductance is baselessly treated as a proof of "topological insulator" or quantum spin hall effect without measuring spin,  this-p.23,  this-p.13 ) of a bulky topological insulator

↑ Nobel prize was often give to these impractical topological insulator, unreal quasiparticles and parallel-world quantum computers, which just hampers real science.

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