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Probing quasi-long-range ordering by magnetostriction in monolayer CoPS3
Qiye Liu, Le Wang, Ying Fu +9
Mermin-Wagner-Coleman theorem predicts no long-range magnetic order at finite temperature in the two-dimensional (2D) isotropic systems, but a quasi-long-range order with a diverge…
Pressure-dependent Intermediate Magnetic Phase in Thin FeGeTe Flakes
Heshen Wang, Runzhang Xu, Cai Liu +10
We investigated the evolution of ferromagnetism in layered FeGeTe flakes under different pressures and temperatures using in situ magnetic circular dichroism (MCD) spectros…
-valley assisted intervalley scattering on monolayer and bilayer WS2 revealed by time-resolved Kerr rotation spectroscopy
Huimin Su, Aiying Deng, Zhiheng Zhen +1
We investigated the valley depolarization and carrier relaxation process of monolayer and bilayer WS2 at 10 K by using time-resolved Kerr rotation (TRKR) and differential reflectan…
Bound exciton and free exciton states in GaSe thin slab
Chengrong Wei, Xi Chen, Dian Li +2
The photoluminescence (PL) and absorption experiments have been performed in GaSe slab with incident light polarized perpendicular to c-axis of sample at 10K. An obvious energy dif…
Anomalously Robust Valley Polarization and Valley Coherence in Bilayer WS2
Bairen Zhu, Hualing Zeng, Junfeng Dai +2
Coherence is a crucial requirement to realize quantum manipulation through light-matter interactions. Here we report the observation of anomalously robust valley polarization and v…
Optical signature of symmetry variations and spin-valley coupling in atomically thin tungsten dichalcogenides
Hualing Zeng, Gui-Bin Liu, Junfeng Dai +8
Motivated by the triumph and limitation of graphene for electronic applications, atomically thin layers of group VI transition metal dichalcogenides are attracting extensive intere…