University of California

Michael F Crommie

Alexander K Zettl

Feng Wang

Jairo Velasco, Jr

Long Ju

Dillon Wong

Salman Kahn

Juwon Lee

Chad E Germany

This disclosure provides systems, methods, and apparatus related to locally doping two-dimensional (2D) materials. In one aspect, an assembly including a substrate, a first insulator disposed on the substrate, a second insulator disposed on the first insulator, and a 2D material disposed on the second insulator is formed. A first voltage is applied between the 2D material and the substrate. With the first voltage applied between the 2D material and the substrate, a second voltage is applied between the 2D material and a probe positioned proximate the 2D material. The second voltage between the 2D material and the probe is removed. The first voltage between the 2D material and the substrate is removed. A portion of the 2D material proximate the probe when the second voltage was applied has a different electron density compared to a remainder of the 2D material.

Local doping of two-dimensional materials

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Oakland, CA, United States of America

Michael F Crommie