Spin Dynamics Slowdown near the Antiferromagnetic Critical Point in Atomically Thin FePS3.

Nano Letters
Xiao-Xiao ZhangJie Shan

Abstract

Two-dimensional (2D) magnetic materials have attracted much recent interest with unique properties emerging at the few-layer limit. Beyond the reported impacts on the static magnetic properties, the effects of reducing the dimensionality on the magnetization dynamics are also of fundamental interest and importance for 2D device development. In this report, we investigate the spin dynamics in atomically thin antiferromagnetic FePS3 of varying layer numbers using ultrafast pump-probe spectroscopy. Following the absorption of an optical pump pulse, the time evolution of the antiferromagnetic order parameter is probed by magnetic linear birefringence. We observe a strong divergence in the demagnetization time near the Néel temperature. The divergence can be characterized by a power-law dependence on the reduced temperature, with an exponent decreasing with sample thickness. We compare our results to expectations from critical slowing down and a two-temperature model involving spins and phonons and discuss the possible relevance of spin-substrate phonon interactions.

References

Sep 1, 1992·Physical Review. B, Condensed Matter·P A Joy, S Vasudevan
Jan 27, 1986·Physical Review Letters·B ToudicW Petry
Sep 6, 2000·Physical Review Letters·T KiseM Kuwata-Gonokami
Feb 21, 2006·Physical Review Letters·B KoopmansW J M de Jonge
Jul 26, 2008·Nature Nanotechnology·Jian-Hao ChenMichael S Fuhrer
Dec 17, 2009·Nature Materials·B KoopmansM Aeschlimann
Dec 15, 2016·Nano Letters·Jae-Ung LeeHyeonsik Cheong
Mar 14, 2018·Nature Materials·Shengwei JiangKin Fai Mak
Apr 25, 2018·Nature Nanotechnology·Bevin HuangXiaodong Xu
May 8, 2018·Nature Nanotechnology·Shengwei JiangJie Shan
Jun 30, 2018·Nature Communications·Zhe WangAlberto F Morpurgo
Nov 2, 2018·Nature·Kenneth S BurchJe-Geun Park
Jan 9, 2019·Nano Letters·Tiancheng SongXiaodong Xu
May 9, 2019·Nature Nanotechnology·M GibertiniK S Novoselov
Jun 27, 2019·Nano Letters·Soudabeh MashhadiKlaus Kern
Sep 17, 2019·Physical Review Letters·Alfred ZongNuh Gedik
Oct 30, 2019·Nature Materials·Tingxin LiJie Shan
Oct 30, 2019·Nature Materials·Tiancheng SongXiaodong Xu
Jun 10, 2020·Nature Materials·Chenhao JinJie Shan
Jun 24, 2020·Nature Materials·Xiao-Xiao ZhangJie Shan
Sep 25, 2020·Proceedings of the National Academy of Sciences of the United States of America·Wencan JinLiuyan Zhao
Nov 10, 2020·Nano Letters·Daniel J RizzoD N Basov
Nov 10, 2020·Nano Letters·Yiping WangKenneth S Burch
Mar 27, 2021·Nature Materials·Chenhao JinKin Fai Mak

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.