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Controlling orbital magnetism of band electron systems via bath engineering

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2024

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Takei, So

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https://doi.org/10.1103/physrevb.110.l140405
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U.S. National Science Foundation (NSF): DMR-2238135

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Physical Review B. American Physical Society (APS). 2024, 110(14), L140405. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/physrevb.110.l140405

Zusammenfassung

Orbital magnetism arises due to the coherent cyclotron motion of band electrons. System-bath entanglement is expected to disrupt this coherent electronic motion and quench orbital magnetism. Here, we show that a suitably tailored bath can lead to an enhancement of the orbital diamagnetic susceptibility of a multiband electron system and can even convert an orbital paramagnetic response into a diamagnetic one as the system-bath coupling is increased. We also demonstrate how a van Hove singularity in the bath density of states can be exploited to generate a giant enhancement of the orbital magnetic susceptibility. Our work opens doors to the possibility of controlling the orbital magnetic response of band electron systems through bath engineering.

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530 Physik

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ISO 690CHAKRABORTY, Subrata, So TAKEI, 2024. Controlling orbital magnetism of band electron systems via bath engineering. In: Physical Review B. American Physical Society (APS). 2024, 110(14), L140405. ISSN 2469-9950. eISSN 2469-9969. Verfügbar unter: doi: 10.1103/physrevb.110.l140405
BibTex
@article{Chakraborty2024-10-10Contr-71176,
  year={2024},
  doi={10.1103/physrevb.110.l140405},
  title={Controlling orbital magnetism of band electron systems via bath engineering},
  number={14},
  volume={110},
  issn={2469-9950},
  journal={Physical Review B},
  author={Chakraborty, Subrata and Takei, So},
  note={Article Number: L140405}
}
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