Phonon Dynamics of Topological Quantum Materials

Fuente: arXiv
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Autore principale: Kumar, Vivek
Natura: Preprint
Pubblicazione: 2025
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author Kumar, Vivek
author_facet Kumar, Vivek
contents The thesis presents a comprehensive Raman spectroscopic and first-principle density functional theory based investigation of V_(1-x)PS_(3) ; PbTaSe_(2) and 1T-TaS_(2). In V_(1-x)PS_(3),the detection of fractionalized excitations (Majorana fermions) suggests a potential Kitaev spin liquid phase, which becomes more pronounced as dimensionality decreases. Evidence of temperature-driven structural phase transition and topological surface phonons has been detected in PbTaSe_(2). TaS_(2) in 1T-phase reveals the presence of a hidden quantum state, a Mott-insulating phase, and a quantum spin liquid state. The observed phenomenon in these quantum systems makes them a promising candidate for advanced technologies such as quantum computing and communication.
format Preprint
id arxiv_https___arxiv_org_abs_2507_17203
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Phonon Dynamics of Topological Quantum Materials
Kumar, Vivek
Strongly Correlated Electrons
The thesis presents a comprehensive Raman spectroscopic and first-principle density functional theory based investigation of V_(1-x)PS_(3) ; PbTaSe_(2) and 1T-TaS_(2). In V_(1-x)PS_(3),the detection of fractionalized excitations (Majorana fermions) suggests a potential Kitaev spin liquid phase, which becomes more pronounced as dimensionality decreases. Evidence of temperature-driven structural phase transition and topological surface phonons has been detected in PbTaSe_(2). TaS_(2) in 1T-phase reveals the presence of a hidden quantum state, a Mott-insulating phase, and a quantum spin liquid state. The observed phenomenon in these quantum systems makes them a promising candidate for advanced technologies such as quantum computing and communication.
title Phonon Dynamics of Topological Quantum Materials
topic Strongly Correlated Electrons
url https://arxiv.org/abs/2507.17203