Lattice Dynamics of Bi1.9Dy0.1Te3 Topological Insulator

Ghosh, Labanya; Gangwar, Vinod K.; Singh, Mukta; Kumar, Satya Vijay; Dixit, Srishti; Verma, Abhineet; Sharma, Durgesh Kumar; Kumar, Sudhir; Saha, Satyen; Ghosh, Anup K.; Chatterjee, Sandip

doi:10.1016/j.physb.2022.414050

Cited by 2 publications

(2 citation statements)

References 41 publications

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“…5(c) along with κ tot . It is observed that κ l tends to decrease as the temperature increases, which is consistent with the other findings [50]. However, κ e , which refers to the transfer of heat through the movement of free electrons within the materials, increases with increasing temperature.…”

Section: Transport Properties -supporting

confidence: 90%

Raman effect and unusual transport properties of Co-doped Mn₂FeAl Heusler alloy

Dixit,

Ghosh,

Patel

et al. 2023

EPL

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Semiconducting materials with a unique blend of high electrical conductivity and low thermal conductivity are required for efficient thermoelectric devices. In this aspect, Heusler alloys are potential candidates for thermoelectric materials. It has been observed that Co doping in Mn2F eAl enhances the electrical conductivity as well as reduces the thermal conductivity of the system leading to an improvement in Figure of merit. The Seebeck coefficient suggested the p-type behavior over the whole temperature range, followed by a maximum at 150 K. Additionally, the electronic properties of the Mn1.5Co0.5F eAl, suggests that the observed Raman mode is due to the electronic excitations in the system. Interestingly, this system shows a decoupling between the Seebeck coefficient and electrical conductivity, suggesting the promising potential of Mn1.5Co0.5F eAl as a thermoelectric material and offering valuable insights into its electronic properties.

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Section: Transport Properties -supporting

confidence: 90%

Raman effect and unusual transport properties of Co-doped Mn₂FeAl Heusler alloy

Dixit,

Ghosh,

Patel

et al. 2023

EPL

Self Cite

View full text Add to dashboard Cite

show abstract

“…A similar relationship between the phononic properties and magnetic ordering in the confined system has been described in the present report. 34,35 Pure Sb 2 Te 3 contains five atoms in a respective primitive unit cell as covalently bonded piles of Te (1)-Sb-Te(2)-Sb-Te(1), which are secured by weak van der Waals force creating each quintuple layer. This inter-planer force can also modify the corresponding Raman or infrared active phonon frequencies.…”

Section: Raman Spectroscopymentioning

confidence: 99%