Probing weak localization in chemical vapor deposition graphene wide constriction using scanning gate microscopy
Probing weak localization in chemical vapor deposition graphene wide constriction using scanning gate microscopy
复制标题
使用扫描门显微镜探测化学气相沉积石墨烯宽收缩中的弱定位
DOI:
10.1088/0957-4484/27/7/075601
复制
发表时间:
2016
期刊:
影响因子:
3.5
通讯作者:
Y. Ochiai and C-T. Liang
中科院分区:
文献类型:
--
作者:
C. Chuang;M. Matsunaga;F-H. Liu;T-P. Woo;N. Aoki;L-H. Lin;B-Y. Wu;Y. Ochiai and C-T. Liang
Low-temperature scanning gate microscopy (LT-SGM) studies of graphene allow one to obtain important spatial information regarding coherent transport such as weak localization (WL) and universal conductance fluctuations. Although fascinating LT-SGM results on pristine graphene prepared by mechanical exfoliation have been reported in the literature, there appears to be a dearth of LT-SGM results on chemical vapor deposition (CVD)-grown graphene whose large scale and flexible substrate transferability make it an ideal candidate for coherent electronic applications. To this end, we have performed LT-SGM studies on CVD-grown graphene wide constriction (0.8 μm), which can be readily prepared by cost-effective optical lithography fully compatible with those in wafer foundry, in the WL regime. We find that the movable local gate can sensitively modulate the total conductance of the CVD graphene constriction possibly due to the intrinsic grain boundaries and merged domains, a great advantage for applications in coherent electronics. Moreover, such a conductance modulation by LT-SGM provides an additional, approximately magnetic-field-independent probe for studying coherent transport such as WL in graphene and spatial conductance variation.
登录
查看更多内容
DOI:
--
发表时间:
2007
期刊:
Kotai Butsuri 42
影响因子:
--
作者:
Nobuyuki Aoki;Yuichi Ochiai
通讯作者:
Yuichi Ochiai
影响因子:
19.6
作者:
Hackens, B.;Martins, F.;Huant, S.
通讯作者:
Huant, S.
影响因子:
8.6
作者:
McCann, E.;Kechedzhi, K.;Altshuler, B. L.
通讯作者:
Altshuler, B. L.
影响因子:
--
作者:
Hilke M;Massicotte M;Whiteway E;Yu V
通讯作者:
Yu V
影响因子:
3.7
作者:
N. Aoki;Carlo Requião da Cunha;R. Akis;D. Ferry;Y. Ochiai
通讯作者:
N. Aoki;Carlo Requião da Cunha;R. Akis;D. Ferry;Y. Ochiai