Probing interlayer interaction via chiral phonons in layered honeycomb materials

Chen, Chen1; Chen, Xiaolong1,5; Deng, Bingchen1; Watanabe, Kenji2; Taniguchi, Takashi3; Huang, Shengxi4; Xia, Fengnian1

2021-01-08

10.1103/PhysRevB.103.035405

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

van der Waals (vdW) interaction plays a significant role in controlling the physical properties of layered materials. Typically, the vdW interlayer interaction can be calculated by density functional theory or experimentally characterized by quantum capacitance measurement. Here, we report the probing of the interlayer interaction in layered honeycomb materials via chiral phonons. Through helicity resolved Raman measurements, we observed a reduced chirality of the Raman G mode with increasing layer numbers. We introduced interlayer coupling terms into the traditional Raman G mode tensor to simulate the reduced phonon chirality in Raman spectra. Our Raman tensor calculation results agree with the experiments well, suggesting that the interlayer interaction can significantly influence the lattice vibration. Our demonstration provides a perspective for characterizing the interlayer interactions in vdW layered materials with honeycomb lattice structure.

SCI ; EI

英语

其他

National Science Foundation (NSF) EFRI-NewLAWprogram[1741693] ; Elemental Strategy Initiative by the MEXT, Japan[JPMXP0112101001] ; JSPS KAKENHI[JP20H00354] ; CREST, JST[JPMJCR15F3] ; National Science Foundation[ECCS-1943895]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000606324200005

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Yale Univ, Dept Elect Engn, New Haven, CT 06511 USA
2.Natl Inst Mat Sci, Res Ctr Funct Mat, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
3.Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
4.Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
5.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Chen, Chen,Chen, Xiaolong,Deng, Bingchen,et al. Probing interlayer interaction via chiral phonons in layered honeycomb materials[J]. PHYSICAL REVIEW B,2021,103(3).

Chen, Chen.,Chen, Xiaolong.,Deng, Bingchen.,Watanabe, Kenji.,Taniguchi, Takashi.,...&Xia, Fengnian.(2021).Probing interlayer interaction via chiral phonons in layered honeycomb materials.PHYSICAL REVIEW B,103(3).

Chen, Chen,et al."Probing interlayer interaction via chiral phonons in layered honeycomb materials".PHYSICAL REVIEW B 103.3(2021).