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[求助]
漢譯英!求翻譯!專業(yè)詞匯可省略!金幣不夠多 求見諒
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1.在這樣的情況下，電導(dǎo)是量子化的，其基本單位對非磁性材料來說為2e2/h，而磁性材料因交換作用提高了自旋簡并度為e2/h。在此以前的Ni的彈道輸運研究中，就發(fā)現(xiàn)了磁電阻的信號隨電流與磁場平行或垂直而不同，但這種行為被當做傳統(tǒng)的AMR來解釋了 2.彈道電導(dǎo)由G=Ne2/h給出，這個數(shù)量N在納米束縛的幾何結(jié)構(gòu)中受自旋軌道相互作用的影響比在塊材料強的多。自旋與軌道角動量的耦合作用，使其在前者的投影隨磁化方向而不同，因而產(chǎn)生了各向異性的效應(yīng)。這樣，通過改變磁化強度方向來改變費米面處能帶數(shù)量，從而影響彈道電導(dǎo)。 專業(yè)詞匯可以用漢字代替 謝謝 [ Last edited by 檸檬樹 on 2013-3-14 at 16:24 ] |
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2樓2013-03-14 16:25:29
3樓2013-03-14 23:24:55
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沒人翻譯 給我如色潤色 也行啊 謝謝了 急用 And the conductance is quantized in units 2e2/h for non-magnetic materials and in units e2/h for magnetic materials in which the exchange interaction lifts the spin degeneracy. Recent experiments performed on Ni ballistic nanocontacts found a change of sign in the magnetoresistance obtained for the field parallel and perpendicular to the current. This behavior was interpreted and signature of AMR The ballistic conductance is given by G=Ne2/h, where N is the number of open conducting channels. This quantity is affected by the spin-orbit interaction which is known to be much stronger in open and constrained geometries than in bulk materials. The effect is anisotropic because the orbital momentum is coupled to the spin causing its projection to be different depending on the magnetization direction. By changing the magnetization direction one can, therefore, change the number of bands crossing the Fermi energy and thereby affect the ballistic conductance. |
4樓2013-03-15 08:12:37
hookhans
鐵桿木蟲 (著名寫手)
Farmer
- 翻譯EPI: 263
- 應(yīng)助: 186 (高中生)
- 貴賓: 0.142
- 金幣: 8012.5
- 散金: 576
- 紅花: 51
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- 蟲號: 2260260
- 注冊: 2013-01-25
- 專業(yè): 催化化學(xué)
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檸檬樹: 金幣+30, 翻譯EPI+1, ★★★★★最佳答案, 給你多的吧 如果版主處理了 我再給你那個帖子的 謝謝哈 2013-03-15 09:16:30
檸檬樹: 金幣+30, 翻譯EPI+1, ★★★★★最佳答案, 給你多的吧 如果版主處理了 我再給你那個帖子的 謝謝哈 2013-03-15 09:16:30
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1) In such circumstances, the conductance is quantized with the unit 2e2/h for the non-magnetic materials. However, the unit for the magnetic materials should be e2/h due to lifting of the spin degeneracy by the exchange interaction. In recent study on the Ni ballistic nanocontacts, it was found that the magnetoresistance signal depends on whether the current and the magnetic field are parallel or perpendicular. Bu this kind of behavior was interpreted as the traditional signature of AMR. 2) The ballistic conductance is given by the equation G=Ne2/h, where the number N is much strongly influenced by the spin-orbit interaction in nano-constrained geometries than that in a bulk material. The coupling between self-spins and the orbital angular momentums results in anisotropic effects because it causes changes of the projection of the former (self-spin) with the magnetization direction. Therefore, the ballistic conductance can be tuned by fashioning (changing) the number of bands on the Fermi surface via. adjudgement of the magnetization direction. |
5樓2013-03-15 09:01:58
6樓2013-03-15 09:11:10
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