Strong correlations and orbital texture in single-layer 1T-TaSe2

Title
Strong correlations and orbital texture in single-layer 1T-TaSe2
Authors
류혜진Yi ChenWei RuanMeng WuShujie TangHsin-Zon TsaiRyan LeeSalman KahnFranklin LiouCaihong JiaOliver R AlbertiniHongyu XiongTao JiaZhi LiuJonathan A SobotaAmy Y LiuJoel E MooreZhi-Xun ShenSteven G LouieSung-Kwan MoMichael F Crommie
Issue Date
2020-02
Publisher
Nature physics
Citation
VOL 16, NO 2-224
Abstract
Strong electron correlation can induce Mott insulating behaviour and produce intriguing states of matter such as unconventional superconductivity and quantum spin liquids. Recent advances in van der Waals material synthesis enable the exploration of Mott systems in the two-dimensional limit. Here we report characterization of the local electronic properties of single- and few-layer 1T-TaSe2 via spatial- and momentum-resolved spectroscopy involving scanning tunnelling microscopy and angle-resolved photoemission. Our results indicate that electron correlation induces a robust Mott insulator state in single-layer 1T-TaSe2 that is accompanied by unusual orbital texture. Interlayer coupling weakens the insulating phase, as shown by reduction of the energy gap and quenching of the correlation-driven orbital texture in bilayer and trilayer 1T-TaSe2. This establishes single-layer 1T-TaSe2 as a useful platform for investigating strong correlation physics in two dimensions.
URI
http://pubs.kist.re.kr/handle/201004/71922
ISSN
1745-2473
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

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

BROWSE