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DOI | 10.1126/science.aar6855 |
A family of finite-temperature electronic phase transitions in graphene multilayers | |
Nam, Youngwoo1,2,3; Ki, Dong-Keun1,2,4; Soler-Delgado, David1,2; Morpurgo, Alberto F.1,2 | |
2018-10-19 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 362期号:6412页码:324-328 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; South Korea; Peoples R China |
英文摘要 | Suspended Bernal-stacked graphene multilayers up to an unexpectedly large thickness exhibit a broken-symmetry ground state whose origin remains to be understood. We show that a finite-temperature second-order phase transition occurs in multilayers whose critical temperature (T-c) increases from 12 kelvins (K) in bilayers to 100 K in heptalayers. A comparison of the data with a phenomenological model inspired by a mean-field approach suggests that the transition is associated with the appearance of a self-consistent valley-and spin-dependent staggered potential that changes sign from one layer to the next, appearing at T-c and increasing upon cooling. The systematic evolution with thickness of several measured quantities imposes constraints on any microscopic theory aiming to analyze the nature of electronic correlations in this system. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447680100044 |
WOS关键词 | BILAYER ; TRANSPORT ; STATES |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/199878 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Geneva, DQMP, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland; 2.Univ Geneva, GAP, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland; 3.Gyeongsang Natl Univ, Dept Phys, Jinju Daero 501, Jinju Si, South Korea; 4.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 | Nam, Youngwoo,Ki, Dong-Keun,Soler-Delgado, David,et al. A family of finite-temperature electronic phase transitions in graphene multilayers[J]. SCIENCE,2018,362(6412):324-328. |
APA | Nam, Youngwoo,Ki, Dong-Keun,Soler-Delgado, David,&Morpurgo, Alberto F..(2018).A family of finite-temperature electronic phase transitions in graphene multilayers.SCIENCE,362(6412),324-328. |
MLA | Nam, Youngwoo,et al."A family of finite-temperature electronic phase transitions in graphene multilayers".SCIENCE 362.6412(2018):324-328. |
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