2024/05/24 by Sonika Sonika, Sonika, Sunil Gangwar +7
Earth and Planetary Sciences · Materials Science · #FOS: Physical sciences #High-pressure geophysics and materials #Materials Science (cond-mat.mtrl-sci) #Organic and Molecular Conductors Research #Solid-state spectroscopy and crystallography #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.2405.15483
openalex publication_date 2024/05/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
1T-VSe2 is a narrow band transition metal chalcogenide that shows charge density wave (CDW) state below TCDW = 110 K. Here, we have explored the relevance of Kohler's rule and the thermal transport properties of VSe2 across the CDW state. The magnetoresistance (MR) follows Kohler's rule above TCDW, while an extended Kohler's rule is employed below TCDW. Interestingly, we observed an anomaly in MR at T = 20 K, below which MR value decreases on lowering temperature. This anomaly is also reflected in the slope (κ) of Kohler's plots and the relative change in the thermal excitation induced carrier density (nT) also. The TCDW remains largely unaffected in both electrical resistivity (ρ(T)) and longitudinal Seebeck coefficient (\itSxx) even under a strong magnetic field of 14 Tesla. However, the application of magnetic field enhances the peak intensity of \itSxx at T ∼ 60 K. Additionally, \itSxx(T) curves measured at different fields exhibit a crossover at T = 20 K, which suggest the existence of unique feature in the CDW state of VSe2 i.e. a locally exact isosbestic point.