Science

Electrical control of an unconventional quantum transport state demonstrated in a magnet for the first time

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 05/11/2026, 21:55:25 UTC.

Briefings

Researchers at Tohoku University and JAEA demonstrated the first successful electrical control of the quantum-geometric nonlinear Hall (QgNLH) state in an electrically switchable chiral antiferromagnet. This achievement allows for precise manipulation of a unique quantum transport state by coupling its spin structure to the state itself, marking a significant step toward controlling exotic quantum phenomena through current. The study provides a foundational method for future applications in quantum computing and advanced materials science by enabling dynamic switching of this non-equilibrium state.

Key points

• Researchers at Tohoku University and JAEA successfully controlled the quantum-geometric nonlinear Hall (QgNLH) state using electric current in an electrically switchable chiral antiferromagnet.
• The breakthrough relies on revealing and exploiting the coupling between the spin structure and the QgNLH state, enabling precise manipulation of the quantum transport phenomenon.

Context

This research represents a major advancement in quantum materials science, as it provides a new method to control exotic quantum states via electric current. Such control is essential for developing next-generation quantum technologies that require precise manipulation of non-equilibrium quantum phenomena.

Limitations

The study is limited to the specific chiral antiferromagnet material tested. The evidence does not specify the exact temperature range or magnetic field conditions under which the control was achieved, nor does it provide details on the long-term stability or scalability of the method for different materials.

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