Magnetic long-range order induced by quantum relaxation in single-molecule magnets
Can magnetic interactions between single-molecule magnets (SMMs) in a crystal establish long-range magnetic order at low temperatures deep in the quantum regime, where the only electron spin fluctuations are due to incoherent magnetic quantum tunneling (MQT)? Put inversely: can MQT provide the tempe...
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| Veröffentlicht in: | Physical review letters 2004-09, Vol.93 (11), p.117202.1-117202.4 |
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| container_end_page | 117202.4 |
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| container_issue | 11 |
| container_start_page | 117202.1 |
| container_title | Physical review letters |
| container_volume | 93 |
| creator | EVANGELISTI, M LUIS, F METTES, F. L ALIAGA, N AROMI, G ALONSO, J. J CHRISTOU, G DE JONGH, L. J |
| description | Can magnetic interactions between single-molecule magnets (SMMs) in a crystal establish long-range magnetic order at low temperatures deep in the quantum regime, where the only electron spin fluctuations are due to incoherent magnetic quantum tunneling (MQT)? Put inversely: can MQT provide the temperature dependent fluctuations needed to destroy the ordered state above some finite T(c), although it should basically itself be a T-independent process? Our experiments on two novel Mn4 SMMs provide a positive answer to the above, showing at the same time that MQT in the SMMs has to involve spin-lattice coupling at a relaxation rate equaling that predicted and observed recently for nuclear-spin-mediated quantum relaxation. |
| doi_str_mv | 10.1103/PhysRevLett.93.117202 |
| format | Article |
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J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetic long-range order induced by quantum relaxation in single-molecule magnets</atitle><jtitle>Physical review letters</jtitle><addtitle>Phys Rev Lett</addtitle><date>2004-09-10</date><risdate>2004</risdate><volume>93</volume><issue>11</issue><spage>117202.1</spage><epage>117202.4</epage><pages>117202.1-117202.4</pages><issn>0031-9007</issn><eissn>1079-7114</eissn><coden>PRLTAO</coden><abstract>Can magnetic interactions between single-molecule magnets (SMMs) in a crystal establish long-range magnetic order at low temperatures deep in the quantum regime, where the only electron spin fluctuations are due to incoherent magnetic quantum tunneling (MQT)? Put inversely: can MQT provide the temperature dependent fluctuations needed to destroy the ordered state above some finite T(c), although it should basically itself be a T-independent process? 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| source | American Physical Society Journals |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Molecular magnets Physics Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.) Studies of specific magnetic materials |
| title | Magnetic long-range order induced by quantum relaxation in single-molecule magnets |
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