Download file (1.12MB)
Download as zip (907KB)

コレクション

引用

説明:

To probe the sources of scattering, we use a cooled scanning probe microscope (SPM) to image the flow of electrons in a MoS2 Hall bar sample at 4.2 K. Capacitive coupling to the SPM tip changes the electron density below and scatters electrons flowing nearby; an image of flow can be obtained by measuring the change in resistance between two contacts as the tip is raster scanned across the sample. We present images of current flow through a large contact that decay exponentially away from the sample edge. In addition, the images show the characteristic “bullseye” pattern of Coulomb blockade conductance rings around a quantum dot as the density is depleted with a back gate. We estimate the size and position of these quantum dots using a capacitive model.

権利情報:

• cc-by-3.0
  

キーワード: MoS2, scanning probe microscope, quantum dots

刊行年月日: 2018-10-19

出版者: IOP Publishing

掲載誌:

• Nanotechnology (ISSN: 13616528) vol. 29 issue. 42

研究助成金:

• National Institute for Materials Science
• Army Research Office W911NF-14-1-0247
• Air Force Office of Scientific Research FA9550-14-1-0268
• Basic Energy Sciences DE-FG02-07ER46422

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1088/1361-6528/aad79f

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-02-23 22:49:46 +0900

MDRでの公開時刻: 2025-02-23 22:49:46 +0900