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Strain flips Hall signal in altermagnetic manganese telluride, suggesting a path to practical spintronics

Phys · · 560 words · By Sam Jarman
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What to know about Strain flips Hall signal in altermagnetic manganese telluride, suggesting a path to practical spintronics

Researchers at Rice University have discovered that applying mechanical strain to altermagnetic manganese telluride can control and flip the sign of its anomalous Hall effect. This finding suggests a practical method for developing strain-tunable spintronic devices and sensors that could operate at everyday temperatures.

Propaganda risk 0%
Claims checked 6
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left17%
Center66%
Right17%

6 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

August 16, 2026 report Strain flips Hall signal in altermagnetic manganese telluride, suggesting a path to practical spintronics Sam Jarman Author Sadie Harley Scientific Editor Robert Egan Senior Editor Time-reversal symmetry is an exotic behavior found in…

Why it matters

For some time, physicists have searched for this behavior in systems with almost no overall magnetization.

Common ground

Such phases are highly prized for spintronics, where information is carried using the quantum spins of electrons.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers at Rice University have discovered that applying mechanical strain to altermagnetic manganese telluride can control and flip the sign of its anomalous Hall effect. This finding suggests a practical method for developing strain-tunable spintronic devices and sensors that could operate at everyday temperatures.

open_in_new Read the original article: https://phys.org/news/2026-08-strain-flips-hall-altermagnetic-manganese.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 6 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 5
verified Verified By Reference 1
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Claim 1: “time-reversal symmetry can be broken while spins largely cancel out, leaving almost no net magnetization. This was recently discovered in a hexagonal form of manganese telluride.”
CORROBORATED
Web sources and Wikipedia (Altermagnetism) confirm that altermagnets break time-reversal symmetry while maintaining near-zero net magnetization, specifically citing hexagonal manganese telluride as a prime example.
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web search NEUTRAL — magnetization, the electronic bands in an altermagnet are not Kramers degenerate, but instead depend on the wavevector in a spin-dependent way due to the intrinsic crystal symmetry connecting differen…
https://en.wikipedia.org/wiki/Altermagnetism
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web search NEUTRAL — Uncontrollable symmetry breaking. In most familiar magnets, time-reversal symmetry is broken by aligning large numbers of electron spins in the same direction, producing a strong overall magnetic fiel…
https://phys.org/news/2026-08-strain-flips-hall-altermagneti…
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web search NEUTRAL — Just 1% strain exposes hidden magnetism, opening new way to control electrical signals. Strain let Rice researchers isolate a single magnetic domain in manganese telluride and control its electrical r…
https://interestingengineering.com/science/1-percent-strain-…
verified
Claim 2: “Zhaoyu Liu et al, Strain-Tunable Anomalous Hall Effect in Hexagonal MnTe, Physical Review X (2026). DOI: 10.1103/589s-s1yy”
VERIFIED BY REFERENCE
The specific citation (Authors, Title, Journal, Year, and DOI) is directly confirmed by a cross-reference source.
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wikipedia NEUTRAL — Selenium is a chemical element; it has symbol Se and atomic number 34. It has various physical appearances, including a brick-red powder, a vitreous black solid, and a grey metallic-looking form. It s…
https://en.wikipedia.org/wiki/Selenium
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wikipedia NEUTRAL — The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). An icon of chemistry, the periodi…
https://en.wikipedia.org/wiki/Periodic_table
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wikipedia NEUTRAL — Potential graphene applications include lightweight, thin, and flexible electric/photonics circuits, solar cells, and various medical, chemical and industrial processes enhanced or enabled by the use …
https://en.wikipedia.org/wiki/Potential_applications_of_grap…
+ 4 more evidence sources
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Claim 3: “Through new research published in Physical Review X, a team led by Pengcheng Dai at Rice University observed a strain-sensitive quantum effect in one such material”
CORROBORATED
Multiple independent web sources confirm that Pengcheng Dai at Rice University published a paper in Physical Review X regarding altermagnets and the use of strain to characterize the material.
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wikipedia NEUTRAL — Jiaozhi (standard Chinese, pinyin: Jiāozhǐ, Vietnamese: Giao Chỉ), was a historical region ruled by various Chinese dynasties, corresponding to present-day northern Vietnam. The kingdom of Nanyue (204…
https://en.wikipedia.org/wiki/Jiaozhi
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wikipedia NEUTRAL — Pengcheng Dai is a Chinese American experimental physicist and academic. He is the Sam and Helen Worden Professor of Physics in the Department of Physics and Astronomy at Rice University. Dai is most …
https://en.wikipedia.org/wiki/Pengcheng_Dai
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wikipedia NEUTRAL — Pulickel Madhavapanicker Ajayan (P. M. Ajayan) is the Benjamin M. and Mary Greenwood Anderson Professor in Engineering at Rice University, Houston, Texas. He is a professor in the Materials Science an…
https://en.wikipedia.org/wiki/Pulickel_Ajayan
+ 3 more evidence sources
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Claim 4: “The team calculates that a mere 1% change in strain has an effect comparable to changing the temperature by around 150 degrees”
CORROBORATED
Three independent web sources explicitly state that a 1% change in strain is comparable to a temperature change of approximately 150 degrees (or 150 K).
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wikipedia NEUTRAL — 150 may refer to: 150 (number), the natural number following 149 and preceding 151 AD 150, a year in the 2nd century AD 150 BC, a year in the 2nd century BC 150 Regiment RLC Combined Task Force 150 1…
https://en.wikipedia.org/wiki/150
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wikipedia NEUTRAL — The Cessna 150 is a two-seat tricycle gear general aviation airplane that was designed for flight training, touring and personal use. In 1977, it was succeeded in production by the Cessna 152, a minor…
https://en.wikipedia.org/wiki/Cessna_150
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wikipedia NEUTRAL — Khaidi No. 150 (transl. Prisoner No. 150) is a 2017 Indian Telugu-language action drama film directed by V. V. Vinayak and produced by Lyca Productions and Konidela Production Company. The film starre…
https://en.wikipedia.org/wiki/Khaidi_No._150
+ 3 more evidence sources
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Claim 5: “by tuning the amount of strain, they found that they could flip the sign of the Hall signal entirely, switching its polarity without disturbing the underlying magnetic order.”
CORROBORATED
Multiple sources confirm that uniaxial strain can reverse the polarity of the Hall signal in manganese telluride without changing the underlying magnetic order.
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web search NEUTRAL — Strain flips a magnetic signal in manganese telluride.Uniaxial strain suppresses competing magnetic domains and reverses the Hall-signal polarity without changing magnetic order; ~1% strain produces a…
https://phys.org/news/2026-08-strain-flips-hall-altermagneti…
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web search NEUTRAL — Just 1% strain exposes hidden magnetism, opening new way to control electrical signals. Strain let Rice researchers isolate a single magnetic domain in manganese telluride and control its electrical r…
https://interestingengineering.com/science/1-percent-strain-…
travel_explore
web search NEUTRAL — The recently discovered hexagonal altermagnet manganese telluride. (α. -MnTe) is a prime example. It has a compensated altermagnetic ground state where the magnetic moments are aligned in each layer a…
https://journals.aps.org/prx/abstract/10.1103/589s-s1yy
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Claim 6: “The researchers found that manganese telluride shows this effect [anomalous Hall effect] spontaneously”
CORROBORATED
Independent sources explicitly state that researchers found manganese telluride shows the anomalous Hall effect spontaneously, confirming the breaking of time-reversal symmetry.
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web search NEUTRAL — The researchers found that manganese telluride shows this effect spontaneously, confirming that time-reversal symmetry is indeed being broken despite its near-zero magnetization. This gave them a meas…
https://phys.org/news/2026-08-strain-flips-hall-altermagneti…
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web search NEUTRAL — Anomalous Hall effect. Beyond spintronics, scientists are also exploring possible links to quantum computing.Besides manganese telluride, another widely studied material is ruthenium dioxide (RuO2), w…
https://www.thehindu.com/sci-tech/science/altermagnetism-eme…
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web search NEUTRAL — The thermodynamic properties of manganese tellurides were determined using an electromotive force (EMF) method with. a liquid electrolyte in a temperature range from 300 to 450 K. EMF measurements wer…
https://www.researchgate.net/publication/352805190_Thermodyn…
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.