BROWSE

Related Scientist

caldes's photo.

caldes
원자제어저차원전자계연구단
more info

ITEM VIEW & DOWNLOAD

Control over a Wide Phase Diagram of 2D Correlated Electrons by Surface Doping; K/1T-TaS2

Cited 0 time in webofscience Cited 0 time in scopus
208 Viewed 0 Downloaded
Title
Control over a Wide Phase Diagram of 2D Correlated Electrons by Surface Doping; K/1T-TaS2
Author(s)
Jiwon Jung; Kyung-Hwan Jin; Jaeyoung Kim; Han Woong Yeom
Publication Date
2023-08
Journal
NANO LETTERS, v.23, no.17, pp.8029 - 8034
Publisher
AMER CHEMICAL SOC
Abstract
We demonstrate the systematic tuning of a trivial insulator into a Mott insulator and a Mott insulator into a correlated metallic and a pseudogap state, which emerge in a quasi-two-dimensional electronic system of 1T-TaS2 through strong electron correlation. The band structure evolution is investigated upon surface doping by alkali adsorbates for two distinct phases occurring at around 220 and 10 K by angle-resolved photoelectron spectroscopy. We find contrasting behaviors upon doping that corroborate the fundamental difference of two electronic states: while the antibonding state of the spin-singlet insulator at 10 K is partially occupied to produce an emerging Mott insulating state, the presumed Mott insulating state at 220 K evolves into a correlated metallic state and then a pseudogap state. The work indicates that surface doping onto correlated 2D materials can be a powerful tool to systematically engineer a wide range of correlated electronic phases.
URI
https://pr.ibs.re.kr/handle/8788114/14065
DOI
10.1021/acs.nanolett.3c02003
ISSN
1530-6984
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse