Birefringence and Dichroism in Quasi‐1D Transition Metal Trichalcogenides: Direct Experimental Investigation

Abstract

Birefringence and dichroism are very important properties in optical anisotropy. Understanding the intrinsic birefringence and dichroism of a material can provide great help to utilize its optical anisotropy. But the direct experimental investigation of birefringence in nanoscale materials is rarely reported. As typical anisotropic transition metals trichalcogenides (TMTCs) materials with quasi‐1D structure, TiS3 and ZrS3 have attracted extensive attention due to their special crystal structure and optical anisotropy characteristics. Here, the optical anisotropy properties such as birefringence and dichroism of two kinds of quasi‐1D TMTCs, TiS3 and ZrS3, are theoretically and experimentally studied. In experimental results, the anisotropic refraction and anisotropic reflection of TiS3 and ZrS3 are studied by polarization‐resolved optical microscopy and azimuth‐dependent reflectance difference microscopy, respectively. In addition, the birefringence and dichroism of ZrS3 nanoribbon in experiment are directly measured by spectrometric ellipsometry measurements, and a reasonable result is obtained. This work provides the basic optical anisotropy information of TiS3 and ZrS3. It lays a foundation for the further study of the optical anisotropy of these two materials and provides a feasible method for the study of birefringence and dichroism of other nanomaterials in the future.

Effect of Au/HfS3 interfacial interactions on properties of HfS3-based devices

“…; and X = S, Se, Te), [1][2][3][4][5][6] which are two-dimensional (2D) van der Waals materials having quasi-one-dimensional (quasi-1D) chains. Their peculiar quasi-1D chains make them attractive candidates for a myriad of nanodevice applications, [7][8][9][10][11][12][13][14] as they are free from undesirable edge disorders that have afflicted other 2D materials like graphene, 15,16 its derivatives, 17 and transition metal dichalcogenides. [18][19][20][21][22][23] What makes HfS 3 stand out among its titanium and zirconium counterparts is the high Z of hafnium, which would result in appreciable intrinsic spin-orbit coupling (SOC) in HfS 3 .…”

“…; and X = S, Se, Te), 1–6 which are two-dimensional (2D) van der Waals materials having quasi-one-dimensional (quasi-1D) chains. Their peculiar quasi-1D chains make them attractive candidates for a myriad of nanodevice applications, 7–14 as they are free from undesirable edge disorders that have afflicted other 2D materials like graphene, 15,16 its derivatives, 17 and transition metal dichalcogenides. 18–23…”

Anisotropic Low‐Dimensional Materials for Polarization‐Sensitive Photodetectors: From Materials to Devices

“…[164] In addition, Wei's group has investigated the birefringence and dichroism in quasi-1D transition metal trichalcogenides by direct experiments. [165]…”

Unprecedented Multifunctionality in 1D Nb1‐xTaxS3 Transition Metal Trichalcogenide Alloy

“…[1][2][3][4][5][6] These characteristics include exotic electronic behaviors such as formation and propagation of charge density waves (CDW), [7,3,[8][9][10][11][12][13][14] supercon ductivity (SC), [15][16][17] topological phases, [18] anisotropic electronic mobility [19] and mechanical properties, [20][21][22] anisotropic lattice vibration, [23] and polarized photo detection. [14,[24][25][26][27][28] Among different 1D materials, transitionmetal trichalcoge nides (TMTC) possess a unique lamellar structure made out of MX 3 layers that are weakly coupled through van der Waals (vdW) interactions and can be downscaled by mechanical or liquidphase exfolia tion. [14,26,28] These processes induce strong anisotropy in the structural symmetry of the TMTCs that could result in distinctive properties along various crystalline orientations.…”

“…[14,[24][25][26][27][28] Among different 1D materials, transitionmetal trichalcoge nides (TMTC) possess a unique lamellar structure made out of MX 3 layers that are weakly coupled through van der Waals (vdW) interactions and can be downscaled by mechanical or liquidphase exfolia tion. [14,26,28] These processes induce strong anisotropy in the structural symmetry of the TMTCs that could result in distinctive properties along various crystalline orientations. These proper ties can be further tuned-or even new properties engineeredby alloying different elements at either the transition metal or the chalcogen site, since the intrinsic properties of TMTCs are anticipated to depend delicately on interactions of the transition metal or chalcogen sites within the layers.…”