Kubo spins in nanoscale aluminum grains: A muon spin relaxation study

Nimrod Bachar; Aviad Levy; Thomas Prokscha; Andreas Suter; Elvezio Morenzoni; Zaher Salman; Guy Deutscher

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Kubo spins in nanoscale aluminum grains: A muon spin relaxation study

机译：Kubo在纳米级铝晶粒中旋转：μ子旋转弛豫研究

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We report muon spin relaxation rate measurements on films composed of aluminum grains having a size of a few nm, with a large energy level splitting of the order of 100 K. The films range from weakly metallic to insulating. In the insulating case, the low-temperature relaxation rate is consistent with the presence of single electron spins in grains having an odd number of electrons, known as Kubo spins. The relaxation rate temperature dependence follows an activation law having an energy scale in agreement with the average level splitting. In weakly metallic films, inter-grain junction spins may contribute substantially to the smaller relaxation rate.

机译：我们报道了在由几纳米大小的铝晶粒组成的薄膜上进行的介子自旋弛豫率测量，该薄膜具有100 K的大能级分裂。薄膜的范围从弱金属到绝缘。在绝缘情况下，低温弛豫速率与具有奇数个电子的晶粒中存在单个电子自旋一致，这称为久保自旋。弛豫速率对温度的依赖性遵循具有与平均能级分裂一致的能级的激活定律。在弱金属膜中，晶间结自旋可实质上有助于较小的弛豫速率。

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《Physical review》 |2020年第2期|024424.1-024424.9|共9页
作者
Nimrod Bachar; Aviad Levy; Thomas Prokscha; Andreas Suter; Elvezio Morenzoni; Zaher Salman; Guy Deutscher;
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Department of Quantum Matter Physics University of Geneva CH-1211 Geneva4 Switzerland;

Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv 69978 Israel;

Laboratory for Muon Spin Spectroscopy Paul Scherrer Institute 5232 Villigen PSI Switzerland;

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1. Kubo spins in nanoscale aluminum grains: A muon spin relaxation study [J] . Physical review, B . 2020,第2期

机译：Kubo旋转在纳米级铝颗粒：μ子旋转松弛研究
2. Muon spin relaxation studies of the frustrated quasi-two-dimensional square-lattice spin system Cu(Cl,Br)La(Nb,Ta)_2O_7: Evolution from spin-gap to antiferromagnetic state [J] . Y. J. Uemura, A. A. Aczel, Y. Ajiro, Physical review . 2009,第17期

机译：沮丧的准二维方格自旋系统Cu（Cl，Br）La（Nb，Ta）_2O_7的Muon自旋弛豫研究：从自旋间隙到反铁磁态的演化
3. Probing Spin-Spin and Spin-Lattice Relaxation Through Electron Paramagnetic Resonance Study of Nanoscale WO_(3-x) System [J] . Vijay Bhooshan Kumar, Dambarudhar Mohanta Materials express: an international journal on multidisciplinary materials research . 2012,第1期

机译：通过纳米WO_（3-x）系电子顺磁共振研究自旋和自旋晶格弛豫
4. Muon spin relaxation study of the layered magnetoelectric FeTe_2O_5Br with spin amplitude modulated magnetic structure [C] . A. Zorko, M. Pregelj, H. Berger Joint MMM-Intermag Conference . 2010

机译：旋转振幅调制磁性结构的分层磁电Fete_2O_5BR的μ子自旋舒适研究
5. THEORY OF SOLID STATE MUON SPIN ROTATION OR RELAXATION EXPERIMENTS - POSITIVE MUON HYPERFINE FIELDS AND TRAP-LIMITED SPIN DEPOLARIZATION. [D] . MUNJAL, RAM LAL. 1978

机译：固态单子旋转或松弛实验的理论-正子超高精细场和陷阱限制的自旋去极化。
6. Studies of a Large Odd‐Numbered Odd‐Electron Metal Ring: Inelastic Neutron Scattering and Muon Spin Relaxation Spectroscopy of Cr8Mn [O] . Dr. Michael L. Baker, Dr. Tom Lancaster, Alessandro Chiesa, -1

机译：大奇数奇数电子金属环的研究：Cr8Mn的非弹性中子散射和μ自旋弛豫光谱
7. Kubo spins in nanoscale aluminum grains: A muon spin relaxation study [O] . Nimrod Bachar, Aviad Levy, Thomas Prokscha, 2020

机译：Kubo旋转在纳米级铝颗粒：μ子旋转松弛研究
8. Spin-Glass Dynamics Determined from Muon Spin-Relaxation and Neutron Spin-Echo Measurements [R] . Heffner, R. H., Leon, M., MacLaughlin, D. E. 1983

机译：旋转玻璃动力学由muon自旋弛豫和中子自旋回波测量确定

Kubo spins in nanoscale aluminum grains: A muon spin relaxation study

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