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Spin-Orbit Echo.

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Title: Spin-Orbit Echo.
Authors: Sugimoto, N., Nagaosa, N.
Source: Science (pre-March 2025). 6/15/2012, Vol. 336 Issue 6087, p1413-1416. 4p.
Subjects: Physics research, Spin-orbit interactions, Spintronics, Physics -- Methodology, Computer simulation, Relativistic quantum theory, Quantum wells, Physics experiments
Abstract: Preserving and controlling the quantum information content of spins is a central challenge of spintronics. In solids, the relativistic spin-orbit interaction (SOI) leads to a finite spin lifetime. Here, we show that spin information is preserved by the hidden conserved "twisted spin" and survives elastic disorder scatterings. This twisted spin is an adiabatic invariant with respect to slow change in the SOI. We predict an echo phenomenon, spin-orbit echo, which indicates the recovery of the spin moment when the SOI is tuned off adiabatically, even after spin relaxation has occurred; this is confirmed by numerical simulations. A concrete experiment in two-dimensional semiconductor quantum wells with Rashba-Dresselhaus SOI is proposed to verify our prediction. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Spin-Orbit Echo.
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  Data: <searchLink fieldCode="AR" term="%22Sugimoto%2C+N%2E%22">Sugimoto, N.</searchLink><br /><searchLink fieldCode="AR" term="%22Nagaosa%2C+N%2E%22">Nagaosa, N.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 6/15/2012, Vol. 336 Issue 6087, p1413-1416. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Physics+research%22">Physics research</searchLink><br /><searchLink fieldCode="DE" term="%22Spin-orbit+interactions%22">Spin-orbit interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Spintronics%22">Spintronics</searchLink><br /><searchLink fieldCode="DE" term="%22Physics+--+Methodology%22">Physics -- Methodology</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Relativistic+quantum+theory%22">Relativistic quantum theory</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+wells%22">Quantum wells</searchLink><br /><searchLink fieldCode="DE" term="%22Physics+experiments%22">Physics experiments</searchLink>
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  Data: Preserving and controlling the quantum information content of spins is a central challenge of spintronics. In solids, the relativistic spin-orbit interaction (SOI) leads to a finite spin lifetime. Here, we show that spin information is preserved by the hidden conserved "twisted spin" and survives elastic disorder scatterings. This twisted spin is an adiabatic invariant with respect to slow change in the SOI. We predict an echo phenomenon, spin-orbit echo, which indicates the recovery of the spin moment when the SOI is tuned off adiabatically, even after spin relaxation has occurred; this is confirmed by numerical simulations. A concrete experiment in two-dimensional semiconductor quantum wells with Rashba-Dresselhaus SOI is proposed to verify our prediction. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1126/science.1217346
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        Text: English
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      – SubjectFull: Spin-orbit interactions
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      – SubjectFull: Spintronics
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      – SubjectFull: Physics -- Methodology
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      – SubjectFull: Computer simulation
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      – SubjectFull: Relativistic quantum theory
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      – SubjectFull: Quantum wells
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              Text: 6/15/2012
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              Y: 2012
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