Nonlinear high-frequency magnetic response of magnetoferritin metacrystals governed by spin thermodynamics

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Nonlinear high-frequency magnetic response of magnetoferritin metacrystals governed by spin thermodynamics. / Kavokin, K. V.

In: Physical Review B, Vol. 102, No. 19, 195417, 11.11.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{3e1d859fdd594441bf6033c4fd9b03d9,

title = "Nonlinear high-frequency magnetic response of magnetoferritin metacrystals governed by spin thermodynamics",

abstract = "A theory is developed of the time-dependent magnetization of the metacrystal composed of magnetoferritin macromolecules. Such superstructures, comprising up to several million superparamagnetic nanoparticles encapsulated in protein shells, can be created artificially using biochemical assembling technologies. They have been also shown to occur naturally in sensitive cells of the inner ear of birds, which suggests their possible involvement in the detection of the geomagnetic field for orientation and navigation of migratory animals. The dynamics of the magnetic system of the magnetoferritin metacrystal, comprising a very large number of magnetic moments coupled by long-range dipole forces, is exceedingly complex. In order to find the response of the metacrystal to high-frequency magnetic fields, we used a thermodynamic approach borrowed from the theory of nuclear spin systems of solids. The resulting theory yields the time-dependent superspin temperature and magnetization induced by oscillating magnetic fields of arbitrary strength. The predicted dependence of the high-frequency response on the static magnetic field can be used for experimental detection and characterization of magnetoferritin metacrystals in biological tissues.",

author = "Kavokin, {K. V.}",

note = "Funding Information: The author is grateful to V. A. Ryzhov, M. M. Glazov, and D. S. Smirnov for very helpful discussions. This work was supported by Grant No. 16-14-10159 from the Russian Science Foundation. Publisher Copyright: {\textcopyright} 2020 American Physical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = nov,

day = "11",

doi = "10.1103/PhysRevB.102.195417",

language = "English",

volume = "102",

journal = "Physical Review B-Condensed Matter",

issn = "1098-0121",

publisher = "American Physical Society",

number = "19",

}

RIS

TY - JOUR

T1 - Nonlinear high-frequency magnetic response of magnetoferritin metacrystals governed by spin thermodynamics

AU - Kavokin, K. V.

N1 - Funding Information: The author is grateful to V. A. Ryzhov, M. M. Glazov, and D. S. Smirnov for very helpful discussions. This work was supported by Grant No. 16-14-10159 from the Russian Science Foundation. Publisher Copyright: © 2020 American Physical Society. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/11/11

Y1 - 2020/11/11

N2 - A theory is developed of the time-dependent magnetization of the metacrystal composed of magnetoferritin macromolecules. Such superstructures, comprising up to several million superparamagnetic nanoparticles encapsulated in protein shells, can be created artificially using biochemical assembling technologies. They have been also shown to occur naturally in sensitive cells of the inner ear of birds, which suggests their possible involvement in the detection of the geomagnetic field for orientation and navigation of migratory animals. The dynamics of the magnetic system of the magnetoferritin metacrystal, comprising a very large number of magnetic moments coupled by long-range dipole forces, is exceedingly complex. In order to find the response of the metacrystal to high-frequency magnetic fields, we used a thermodynamic approach borrowed from the theory of nuclear spin systems of solids. The resulting theory yields the time-dependent superspin temperature and magnetization induced by oscillating magnetic fields of arbitrary strength. The predicted dependence of the high-frequency response on the static magnetic field can be used for experimental detection and characterization of magnetoferritin metacrystals in biological tissues.

AB - A theory is developed of the time-dependent magnetization of the metacrystal composed of magnetoferritin macromolecules. Such superstructures, comprising up to several million superparamagnetic nanoparticles encapsulated in protein shells, can be created artificially using biochemical assembling technologies. They have been also shown to occur naturally in sensitive cells of the inner ear of birds, which suggests their possible involvement in the detection of the geomagnetic field for orientation and navigation of migratory animals. The dynamics of the magnetic system of the magnetoferritin metacrystal, comprising a very large number of magnetic moments coupled by long-range dipole forces, is exceedingly complex. In order to find the response of the metacrystal to high-frequency magnetic fields, we used a thermodynamic approach borrowed from the theory of nuclear spin systems of solids. The resulting theory yields the time-dependent superspin temperature and magnetization induced by oscillating magnetic fields of arbitrary strength. The predicted dependence of the high-frequency response on the static magnetic field can be used for experimental detection and characterization of magnetoferritin metacrystals in biological tissues.

UR - http://www.scopus.com/inward/record.url?scp=85096114355&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.102.195417

DO - 10.1103/PhysRevB.102.195417

M3 - Article

AN - SCOPUS:85096114355

VL - 102

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 19

M1 - 195417

ER -

ID: 73452586