Landau-Zener tunneling with many-body quantum effects in crystals of molecular magnets

Li Bin Fu; Shi Gang Chen; Bambi Hu

doi:10.1016/j.physleta.2004.02.015

Landau-Zener tunneling with many-body quantum effects in crystals of molecular magnets

Li Bin Fu^*
, Shi Gang Chen
, Bambi Hu

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › peer-review

8 Citations (Scopus)

Abstract

We present a quantum interpretation of the heights in hysteresis of Fe ₈ molecule at lower temperatures by treating the crystal as an Ising spin system with the dipolar interaction between spins. Then we apply it to two limit cases: rapid and adiabatic regions. Our theoretical analysis is in agreement with the experimental observation in these regions, which indicates that the steps in hysteresis loops of magnetization of Fe₈ at lower temperatures show a pure quantum process.

Original language	English
Pages (from-to)	460-464
Number of pages	5
Journal	Physics Letters A
Volume	323
Issue number	5-6
DOIs	https://doi.org/10.1016/j.physleta.2004.02.015
Publication status	Published - 29 Mar 2004

User-Defined Keywords

74.50.+r
75.45.+j
75.60.Ej
Dipolar interaction
Landau-Zener tunneling
Molecular magnets

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10.1016/j.physleta.2004.02.015

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title = "Landau-Zener tunneling with many-body quantum effects in crystals of molecular magnets",

abstract = "We present a quantum interpretation of the heights in hysteresis of Fe 8 molecule at lower temperatures by treating the crystal as an Ising spin system with the dipolar interaction between spins. Then we apply it to two limit cases: rapid and adiabatic regions. Our theoretical analysis is in agreement with the experimental observation in these regions, which indicates that the steps in hysteresis loops of magnetization of Fe8 at lower temperatures show a pure quantum process.",

keywords = "74.50.+r, 75.45.+j, 75.60.Ej, Dipolar interaction, Landau-Zener tunneling, Molecular magnets",

author = "Fu, \{Li Bin\} and Chen, \{Shi Gang\} and Bambi Hu",

note = "This work was supported in part by the grants from the 973 Project of China and the Hong Kong Research Grants Council (RGB). Dr. L.-B. Fu acknowledged the support of the Alexander von Humboldt Foundation. Publisher copyright: {\textcopyright} 2004 Elsevier B.V. All rights reserved.",

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doi = "10.1016/j.physleta.2004.02.015",

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T1 - Landau-Zener tunneling with many-body quantum effects in crystals of molecular magnets

AU - Fu, Li Bin

AU - Chen, Shi Gang

AU - Hu, Bambi

N1 - This work was supported in part by the grants from the 973 Project of China and the Hong Kong Research Grants Council (RGB). Dr. L.-B. Fu acknowledged the support of the Alexander von Humboldt Foundation. Publisher copyright: © 2004 Elsevier B.V. All rights reserved.

PY - 2004/3/29

Y1 - 2004/3/29

N2 - We present a quantum interpretation of the heights in hysteresis of Fe 8 molecule at lower temperatures by treating the crystal as an Ising spin system with the dipolar interaction between spins. Then we apply it to two limit cases: rapid and adiabatic regions. Our theoretical analysis is in agreement with the experimental observation in these regions, which indicates that the steps in hysteresis loops of magnetization of Fe8 at lower temperatures show a pure quantum process.

AB - We present a quantum interpretation of the heights in hysteresis of Fe 8 molecule at lower temperatures by treating the crystal as an Ising spin system with the dipolar interaction between spins. Then we apply it to two limit cases: rapid and adiabatic regions. Our theoretical analysis is in agreement with the experimental observation in these regions, which indicates that the steps in hysteresis loops of magnetization of Fe8 at lower temperatures show a pure quantum process.

KW - 74.50.+r

KW - 75.45.+j

KW - 75.60.Ej

KW - Dipolar interaction

KW - Landau-Zener tunneling

KW - Molecular magnets

UR - https://www.scopus.com/pages/publications/1542328895

U2 - 10.1016/j.physleta.2004.02.015

DO - 10.1016/j.physleta.2004.02.015

M3 - Journal article

AN - SCOPUS:1542328895

SN - 0375-9601

VL - 323

SP - 460

EP - 464

JO - Physics Letters A

JF - Physics Letters A

IS - 5-6

ER -

Landau-Zener tunneling with many-body quantum effects in crystals of molecular magnets

Abstract

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