Long-Range Spin-Selective Transport in Chiral Metal-Organic Crystals with Temperature-Activated Magnetization.
Long-Range Spin-Selective Transport in Chiral Metal-Organic Crystals with Temperature-Activated Magnetization.
复制标题
在手性金属有机晶体中具有温度激活磁化的远程自旋选择性转运。
DOI:
10.1021/acsnano.0c07569
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发表时间:
2020-12-22
期刊:
影响因子:
17.1
通讯作者:
Naaman R
中科院分区:
文献类型:
--
作者:
Mondal AK;Brown N;Mishra S;Makam P;Wing D;Gilead S;Wiesenfeld Y;Leitus G;Shimon LJW;Carmieli R;Ehre D;Kamieniarz G;Fransson J;Hod O;Kronik L;Gazit E;Naaman R
Room-temperature, long-range (300 nm), chirality-induced spin-selective electron conduction is found in chiral metal–organic Cu(II) phenylalanine crystals, using magnetic conductive-probe atomic force microscopy. These crystals are found to be also weakly ferromagnetic and ferroelectric. Notably, the observed ferromagnetism is thermally activated, so that the crystals are antiferromagnetic at low temperatures and become ferromagnetic above ∼50 K. Electron paramagnetic resonance measurements and density functional theory calculations suggest that these unusual magnetic properties result from indirect exchange interaction of the Cu(II) ions through the chiral lattice.
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