Quantum tunnelling in magnetic particles, layers and multilayers

B. Barbara; J. E. Wegrowe; L. C. Sampaio; J. P. Nozières; M. Uehara; M. Novak; C. Paulsen; J. L. Tholence

doi:10.1088/0031-8949/1993/T49A/047

Quantum tunnelling in magnetic particles, layers and multilayers

B. Barbara
, J. E. Wegrowe
, L. C. Sampaio
, J. P. Nozières
, M. Uehara
, M. Novak
, C. Paulsen
, J. L. Tholence

Institut NÉEL
National Institute for Materials Science

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

Abstract

The time delayed reversal of the magnetization of magnetic system with distributions of energy barriers, is in general strongly dependent on temperature at high temperature. At low temperature it becomes independent of the temperature. This result is interpreted in terms of a crossover between a thermal regime, in which the irreversible rotation of the magnetization is thermally activated, and a quantum regime in which it proceeds by quantum tunnelling. In this paper we show some results obtained in nanoparticles, layers and multilayers. In particular an analogy with Josephson junction will be made for the case of the sandwiches (domain wall junction). The role of dissipation will be discussed.

Original language	English
Pages (from-to)	99-103
Number of pages	5
Journal	Physica Scripta
Volume	1993
Issue number	T49A
DOIs	https://doi.org/10.1088/0031-8949/1993/T49A/047
Publication status	Published - 1 Jan 1993
Externally published	Yes

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10.1088/0031-8949/1993/T49A/047

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title = "Quantum tunnelling in magnetic particles, layers and multilayers",

abstract = "The time delayed reversal of the magnetization of magnetic system with distributions of energy barriers, is in general strongly dependent on temperature at high temperature. At low temperature it becomes independent of the temperature. This result is interpreted in terms of a crossover between a thermal regime, in which the irreversible rotation of the magnetization is thermally activated, and a quantum regime in which it proceeds by quantum tunnelling. In this paper we show some results obtained in nanoparticles, layers and multilayers. In particular an analogy with Josephson junction will be made for the case of the sandwiches (domain wall junction). The role of dissipation will be discussed.",

author = "B. Barbara and Wegrowe, \{J. E.\} and Sampaio, \{L. C.\} and Nozi{\`e}res, \{J. P.\} and M. Uehara and M. Novak and C. Paulsen and Tholence, \{J. L.\}",

year = "1993",

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doi = "10.1088/0031-8949/1993/T49A/047",

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TY - JOUR

T1 - Quantum tunnelling in magnetic particles, layers and multilayers

AU - Barbara, B.

AU - Wegrowe, J. E.

AU - Sampaio, L. C.

AU - Nozières, J. P.

AU - Uehara, M.

AU - Novak, M.

AU - Paulsen, C.

AU - Tholence, J. L.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The time delayed reversal of the magnetization of magnetic system with distributions of energy barriers, is in general strongly dependent on temperature at high temperature. At low temperature it becomes independent of the temperature. This result is interpreted in terms of a crossover between a thermal regime, in which the irreversible rotation of the magnetization is thermally activated, and a quantum regime in which it proceeds by quantum tunnelling. In this paper we show some results obtained in nanoparticles, layers and multilayers. In particular an analogy with Josephson junction will be made for the case of the sandwiches (domain wall junction). The role of dissipation will be discussed.

AB - The time delayed reversal of the magnetization of magnetic system with distributions of energy barriers, is in general strongly dependent on temperature at high temperature. At low temperature it becomes independent of the temperature. This result is interpreted in terms of a crossover between a thermal regime, in which the irreversible rotation of the magnetization is thermally activated, and a quantum regime in which it proceeds by quantum tunnelling. In this paper we show some results obtained in nanoparticles, layers and multilayers. In particular an analogy with Josephson junction will be made for the case of the sandwiches (domain wall junction). The role of dissipation will be discussed.

U2 - 10.1088/0031-8949/1993/T49A/047

DO - 10.1088/0031-8949/1993/T49A/047

M3 - Article

AN - SCOPUS:84956083927

SN - 0031-8949

VL - 1993

SP - 99

EP - 103

JO - Physica Scripta

JF - Physica Scripta

IS - T49A

ER -

Quantum tunnelling in magnetic particles, layers and multilayers

Abstract

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