| 5 | 1/1 | 返回列表 |
| 查看: 761 | 回復(fù): 4 | ||
| 【獎勵】 本帖被評價(jià)4次,作者donghuig增加金幣 3.2 個(gè) | ||
[資源]
石墨烯中晶格扭曲(strain)引起的超300T贗磁場
|
||
|
由緊束縛計(jì)算可知,當(dāng)石墨烯中存在各向異性的拉伸時(shí),會產(chǎn)生矢量場.這個(gè)矢量場可以對石墨烯中的pi電子產(chǎn)生與外磁場相識的效果.加州大學(xué)伯克利分校的M.F. Crommie在Pt表面高溫生長石墨烯冷卻后由于晶格失配在二維石墨烯中產(chǎn)生了很多的三維的氣泡狀結(jié)構(gòu)(高0.3-2個(gè)納米左右).由于扭曲(strain),在氣泡結(jié)構(gòu)上用掃描隧道譜觀測到了相當(dāng)于300特斯拉的朗道能級. Recent theoretical proposals suggest that strain can be used to engineer graphene electronic states through the creation of a pseudo–magnetic field. This effect is unique to graphene because of its massless Dirac fermion-like band structure and particular lattice symmetry (C3v). Here, we present experimental spectroscopic measurements by scanning tunneling microscopy of highly strained nanobubbles that form when graphene is grown on a platinum (111) surface. The nanobubbles exhibit Landau levels that form in the presence of strain-induced pseudo–magnetic fields greater than 300 tesla. This demonstration of enormous pseudo–magnetic fields opens the door to both the study of charge carriers in previously inaccessible high magnetic field regimes and deliberate mechanical control over electronic structure in graphene or so-called “strain engineering.” |
| 5 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 生物學(xué)調(diào)劑招人。。 +3 | 山海天嵐 2026-03-17 | 4/200 |
|
|---|---|---|---|---|
|
[考研]
|
.6lL 2026-03-18 | 6/300 |
|
|
[考研] 324分 085600材料化工求調(diào)劑 +3 | llllkkkhh 2026-03-18 | 3/150 |
|
|
[考研] 317求調(diào)劑 +3 | 申子申申 2026-03-19 | 6/300 |
|
|
[考研] 化學(xué)求調(diào)劑 +3 | 臨澤境llllll 2026-03-17 | 4/200 |
|
|
[考研] 一志愿985,本科211,0817化學(xué)工程與技術(shù)319求調(diào)劑 +10 | Liwangman 2026-03-15 | 10/500 |
|
|
[考研] 0817調(diào)劑 +3 | 沒有答案_ 2026-03-14 | 3/150 |
|
|
[考研] 312求調(diào)劑 +8 | 陌宸希 2026-03-16 | 9/450 |
|
|
[考研] 材料,紡織,生物(0856、0710),化學(xué)招生啦 +3 | Eember. 2026-03-17 | 9/450 |
|
|
[考研] 278求調(diào)劑 +5 | 煙火先于春 2026-03-17 | 5/250 |
|
|
[考研] 334求調(diào)劑 +3 | 志存高遠(yuǎn)意在機(jī)?/a> 2026-03-16 | 3/150 |
|
|
[考研] 考研化學(xué)學(xué)碩調(diào)劑,一志愿985 +4 | 張vvvv 2026-03-15 | 6/300 |
|
|
[論文投稿] 有沒有大佬發(fā)小論文能帶我個(gè)二作 +3 | 增銳漏人 2026-03-17 | 4/200 |
|
|
[考研] [導(dǎo)師推薦]西南科技大學(xué)國防/材料導(dǎo)師推薦 +3 | 尖角小荷 2026-03-16 | 6/300 |
|
|
[考研] 藥學(xué)383 求調(diào)劑 +3 | 藥學(xué)chy 2026-03-15 | 4/200 |
|
|
[考研] 318求調(diào)劑 +3 | Yanyali 2026-03-15 | 3/150 |
|
|
[考研] 中科大材料與化工319求調(diào)劑 +3 | 孟鑫材料 2026-03-14 | 3/150 |
|
|
[考研] 材料與化工 323 英一+數(shù)二+物化,一志愿:哈工大 本人本科雙一流 +4 | 自由的_飛翔 2026-03-13 | 5/250 |
|
|
[考研] 289求調(diào)劑 +4 | 這么名字咋樣 2026-03-14 | 6/300 |
|
|
[考研] 311求調(diào)劑 +3 | 冬十三 2026-03-13 | 3/150 |
|