Spin pumping and shot noise in ferrimagnets : bridging ferro- and antiferromagnets

Kamra, Akashdeep; Belzig, Wolfgang

Spin pumping and shot noise in ferrimagnets : bridging ferro- and antiferromagnets

Dateien

Kamra_2-1jeh75o2u903n2.pdfGröße: 668.93 KBDownloads: 346

Datum

2017

Open Access-Veröffentlichung

Open Access Green

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Physik

Publikationstyp

Zeitschriftenartikel

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Published

Erschienen in

Physical Review Letters. 2017, 119(19), 197201. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.119.197201

Zusammenfassung

A combination of novel technological and fundamental physics prospects has sparked a huge interest in pure spin transport in magnets, starting with ferromagnets and spreading to antiferro- and ferrimagnets. We present a theoretical study of spin transport across a ferrimagnet$|$non-magnetic conductor interface, when a magnetic eigenmode is driven into a coherent state. The obtained spin current expression includes intra- as well as cross-sublattice terms, both of which are essential for a quantitative understanding of spin-pumping. The dc current is found to be sensitive to the asymmetry in interfacial coupling between the two sublattice magnetizations and the mobile electrons, especially for antiferromagnets. We further find that the concomitant shot noise provides a useful tool for probing the quasiparticle spin and interfacial coupling.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

KAMRA, Akashdeep, Wolfgang BELZIG, 2017. Spin pumping and shot noise in ferrimagnets : bridging ferro- and antiferromagnets. In: Physical Review Letters. 2017, 119(19), 197201. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.119.197201

BibTex

@article{Kamra2017-06-21T20:51:06Zpumpi-40576,
  year={2017},
  doi={10.1103/PhysRevLett.119.197201},
  title={Spin pumping and shot noise in ferrimagnets : bridging ferro- and antiferromagnets},
  number={19},
  volume={119},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Kamra, Akashdeep and Belzig, Wolfgang},
  note={Article Number: 197201}
}

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