DOI: 10.1063/1.352508. Quantum tunneling in magnetic systems of various sizes (invited)

Quantum tunneling in magnetic systems of various sizes (invited)

10.1063/1.352508

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Magnetic relaxation experiments constitute a unique method of determining the nature of fluctuations in dissipative magnetic systems. At high temperatures these fluctuations are thermal and strongly temperature dependent. At low temperatures, where quantum fluctuations dominate, magnetic relaxation becomes independent of temperature. Such behavior has been observed in many systems. In this review we emphasize the study of low temperature relaxation in ferromagnetic nanoparticles, layers, and multilayers (including ‘‘domain wall junctions’’), and large single crystals. The results of magnetic relaxation experiments are shown to agree with theoretical predictions of quantum tunneling of the magnetization. When dissipation becomes important, in large and complex systems, a time dependent WKB exponent needs to be introduced.

Bibliography

Barbara, B., Sampaio, L. C., Wegrowe, J. E., Ratnam, B. A., Marchand, A., Paulsen, C., Novak, M. A., Tholence, J. L., Uehara, M., & Fruchart, D. (1993). Quantum tunneling in magnetic systems of various sizes (invited). Journal of Applied Physics, 73(10), 6703â6708.

Authors 10

B. Barbara (first)
L. C. Sampaio (additional)
J. E. Wegrowe (additional)
B. A. Ratnam (additional)
A. Marchand (additional)
C. Paulsen (additional)
M. A. Novak (additional)
J. L. Tholence (additional)
M. Uehara (additional)
D. Fruchart (additional)

References 53 Referenced 90

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 9:45 a.m.)
Deposited	1 year, 6 months ago (Feb. 4, 2024, 12:15 p.m.)
Indexed	1 month, 4 weeks ago (July 1, 2025, 9:30 a.m.)
Issued	32 years, 3 months ago (May 15, 1993)
Published	32 years, 3 months ago (May 15, 1993)
Published Print	32 years, 3 months ago (May 15, 1993)

Funders 0

None

BibTeX

@article{Barbara_1993, title={Quantum tunneling in magnetic systems of various sizes (invited)}, volume={73}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.352508}, DOI={10.1063/1.352508}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Barbara, B. and Sampaio, L. C. and Wegrowe, J. E. and Ratnam, B. A. and Marchand, A. and Paulsen, C. and Novak, M. A. and Tholence, J. L. and Uehara, M. and Fruchart, D.}, year={1993}, month=may, pages={6703–6708} }

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    }
  },
  "subtitle": [],
  "short-title": [],
  "issued": {
    "date-parts": [
      [
        1993,
        5,
        15
      ]
    ]
  },
  "references-count": 53,
  "journal-issue": {
    "issue": "10",
    "published-print": {
      "date-parts": [
        [
          1993,
          5,
          15
        ]
      ]
    }
  },
  "URL": "http://dx.doi.org/10.1063/1.352508",
  "relation": {},
  "ISSN": [
    "0021-8979",
    "1089-7550"
  ],
  "subject": [],
  "published-other": {
    "date-parts": [
      [
        1993,
        5,
        15
      ]
    ]
  },
  "published": {
    "date-parts": [
      [
        1993,
        5,
        15
      ]
    ]
  }
}