Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator
Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator
复制标题
掺杂莫特绝缘体中反铁磁序的原子尺度碎裂和崩溃
DOI:
10.1038/s41567-019-0671-9
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发表时间:
2019
期刊:
影响因子:
19.6
通讯作者:
Zeljkovic, Ilija
中科院分区:
文献类型:
--
作者:
Zhao, He;Manna, Sujit;Porter, Zach;Chen, Xiang;Uzdejczyk, Andrew;Moodera, Jagadeesh;Wang, Ziqiang;Wilson, Stephen D.;Zeljkovic, Ilija
Disentangling the relationship between the insulating state with a charge gap and the magnetic order in an antiferromagnetic Mott insulator remains difficult due to inherent phase separation as the Mott state is perturbed, , , , , –. Measuring magnetic and electronic properties at atomic length scales would provide crucial insight, but this is yet to be experimentally achieved. Here, we use spin-polarized scanning tunnelling microscopy (SP-STM) to visualize the periodic spin-resolved modulations originating from the antiferromagnetic order in a relativistic Mott insulator Sr2IrO4(refs.,), and how they change as a function of doping. We find that near the insulator-to-metal transition (IMT), the long-range antiferromagnetic order melts into a fragmented state with short-range correlations. Crucially, we discover that the short-range antiferromagnetic order is locally uncorrelated with the observed spectral gap magnitude. This suggests that static short-range antiferromagnetic correlations are unlikely to be the cause of the inhomogeneous closing of the spectral gap and the emergence of pseudogap regions near the IMT. Our work establishes SP-STM as a powerful tool for revealing atomic-scale magnetic information in complex oxides.
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影响因子:
16.6
作者:
Manna S;Kamlapure A;Cornils L;Hänke T;Hedegaard EM;Bremholm M;Iversen BB;Hofmann P;Wiebe J;Wiesendanger R
通讯作者:
Wiesendanger R
影响因子:
19.6
作者:
Battisti, I.;Bastiaans, K. M.;Allan, M. P.
通讯作者:
Allan, M. P.
DOI:
10.1063/1.4976567
发表时间:
2013
期刊:
The Review of scientific instruments
影响因子:
--
作者:
Dennis Huang;Stephen Liu;I. Zeljkovic;J. Mitchell;J. Hoffman
通讯作者:
J. Hoffman
影响因子:
16.6
作者:
Chen X;Schmehr JL;Islam Z;Porter Z;Zoghlin E;Finkelstein K;Ruff JPC;Wilson SD
通讯作者:
Wilson SD
DOI:
10.1136/ebmh.11.4.102
发表时间:
2008-10
期刊:
Evidence Based Mental Health
影响因子:
--
作者:
P. Cochat;L. Vaucoret;J. Sarles
通讯作者:
P. Cochat;L. Vaucoret;J. Sarles