The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Macroscopic quantum tunneling in magnetic proteins
Abstract
We report low-temperature measurements of the frequency-dependent magnetic noise and magnetic susceptibility of nanometer-scale antiferromagnetic horse-spleen ferritin particles, using an integrated dc SQUID microsusceptometer. A sharply defined resonance near 1 MHz develops below T\ensuremath{\sim}0.2 K. The behavior of this resonance as a function of temperature, applied magnetic field, and particle concentration indicates that it results from macroscopic quantum tunneling of the N\'eel vector of the antiferromagnets.
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Citations
Cites
Dynamics of the dissipative two-state system
Leggett, A. J., Chakravarty, S., Dorsey, A. T., Fisher, M. P. A., Garg, A., & Zwerger, W. (1987) · Reviews of Modern Physics · doi:10.1103/revmodphys.59.1 · Cited by 5,109
Quantum Tunneling of Magnetization in Small Ferromagnetic Particles
Chudnovsky, E. M., & Gunther, L. (1988) · Physical Review Letters · doi:10.1103/physrevlett.60.661 · Cited by 575
Mineralogical constitution of colloidal “hydrous ferric oxides”
Towe, K. M., & Bradley, W. F. (1967) · Journal of Colloid and Interface Science · doi:10.1016/0021-9797(67)90266-4 · Cited by 443
Macroscopic quantum tunneling in antiferromagnets
Barbara, B., & Chudnovsky, E. M. (1990) · Physics Letters A · doi:10.1016/0375-9601(90)90682-e · Cited by 224
Ferric Oxyhydroxide Core of Ferritin
HARRISON, P. M., FISCHBACH, F. A., HOY, T. G., & HAGGIS, G. H. (1967) · Nature · doi:10.1038/2161188a0 · Cited by 205
Observation of macroscopic spin phenomena in nanometer-scale magnets
Awschalom, D. D., McCord, M. A., & Grinstein, G. (1990) · Physical Review Letters · doi:10.1103/physrevlett.65.783 · Cited by 123
Self-citationThe iron oxide core of the ferritin molecule
Haggis, G. H. (1965) · Journal of Molecular Biology · doi:10.1016/s0022-2836(65)80210-8 · Cited by 91
Relaxometry of ferritin solutions and the influence of the Fe3+ core ions
Koenig, S. H., Brown, R. D., Gibson, J. F., Ward, R. J., & Peters, T. J. (1986) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1910030511 · Cited by 75
Macroscopic quantum tunnelling in antiferromagnets
Krive, I. V., & Заславский, О. Б. (1990) · Journal of Physics Condensed Matter · doi:10.1088/0953-8984/2/47/020 · Cited by 54
Pierre, T. G. S., Jones, D. H., & Dickson, D. P. E. (1987) · Journal of Magnetism and Magnetic Materials · doi:10.1016/0304-8853(87)90254-x · Cited by 33
Cited by
Surface Spin Disorder inNiFe2O4Nanoparticles
Kodama, R. H., Berkowitz, A. E., McNiff, Jr., & Foner, S. (1996) · Physical Review Letters · doi:10.1103/physrevlett.77.394 · Cited by 1,628
Magnetic Relaxation in Fine‐Particle Systems
Dormann, J. L., Fiorani, D., & Tronc, E. (1997) · Advances in Chemical Physics · doi:10.1002/9780470141571.ch4 · Cited by 983
Moriarty, P. (2001) · Reports on Progress in Physics · doi:10.1088/0034-4885/64/3/201 · Cited by 785
Testing the limits of quantum mechanics: motivation, state of play, prospects
Leggett, A. J. (2002) · Journal of Physics: Condensed Matter · doi:10.1088/0953-8984/14/15/201 · Cited by 705
Molecular Magnetism: A basis for new materials
Gatteschi, D. (1994) · Advanced Materials · doi:10.1002/adma.19940060903 · Cited by 476
Metadata
- Authors
- Awschalom, D. D., Smyth, J. F., Grinstein, G., DiVincenzo, D. P., & Loss, D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1992-05-18
- Volume
- 68
- Issue
- 20
- Pages
- 3092-3095
- ISSN
- 0031-9007 (ISSN-L)
- OpenAlex
- W2003626497
- Cited by
- 290
- References
- 11
- FWCI
- 27.81
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Macroscopic quantum tunneling in magnetic proteins. https://app.cochat.ai/papers/10.1103/physrevlett.68.3092
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- Awschalom, D. D., Smyth, J. F., Grinstein, G., DiVincenzo, D. P., & Loss, D. (1992). Macroscopic quantum tunneling in magnetic proteins. Physical Review Letters. https://doi.org/10.1103/physrevlett.68.3092
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
