High harmonic spectroscopy reveals anisotropy of the Mott to Charge-Density-Wave phase transition in TiSe$_2$

Fuente: arXiv
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Autori principali: Tyulnev, Igor, Zhang, Lin, Vamos, Lenard, Poborska, Julita, Bhattacharya, Utso, Chhajlany, Ravindra W., Grass, Tobias, Mañas-Valero, Samuel, Coronado, Eugenio, Lewenstein, Maciej, Biegert, Jens
Natura: Preprint
Pubblicazione: 2024
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author Tyulnev, Igor
Zhang, Lin
Vamos, Lenard
Poborska, Julita
Bhattacharya, Utso
Chhajlany, Ravindra W.
Grass, Tobias
Mañas-Valero, Samuel
Coronado, Eugenio
Lewenstein, Maciej
Biegert, Jens
author_facet Tyulnev, Igor
Zhang, Lin
Vamos, Lenard
Poborska, Julita
Bhattacharya, Utso
Chhajlany, Ravindra W.
Grass, Tobias
Mañas-Valero, Samuel
Coronado, Eugenio
Lewenstein, Maciej
Biegert, Jens
contents This work explores the use of polarization-resolved high harmonic generation (HHG) spectroscopy to investigate the quantum phases and transitions in the correlated charge density wave (CDW) phase of TiSe$_2$. Unlike previous studies focusing on crystallographic changes, the research examines the reordering that occurs within the CDW phase as the material is cooled from room temperature to 14 K. By linking ultrafast field-driven dynamics to the material's potential landscape, the study demonstrates how HHG is sensitive to quantum phase transitions. The findings reveal an anisotropic component below the CDW transition temperature, providing new insights into the nature of this phase. The investigation highlights the interplay between linear and nonlinear optical responses and their departure from simple perturbative dynamics, offering a fresh perspective on correlated quantum phases in condensed matter systems.
format Preprint
id arxiv_https___arxiv_org_abs_2409_04216
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle High harmonic spectroscopy reveals anisotropy of the Mott to Charge-Density-Wave phase transition in TiSe$_2$
Tyulnev, Igor
Zhang, Lin
Vamos, Lenard
Poborska, Julita
Bhattacharya, Utso
Chhajlany, Ravindra W.
Grass, Tobias
Mañas-Valero, Samuel
Coronado, Eugenio
Lewenstein, Maciej
Biegert, Jens
Strongly Correlated Electrons
Materials Science
Optics
This work explores the use of polarization-resolved high harmonic generation (HHG) spectroscopy to investigate the quantum phases and transitions in the correlated charge density wave (CDW) phase of TiSe$_2$. Unlike previous studies focusing on crystallographic changes, the research examines the reordering that occurs within the CDW phase as the material is cooled from room temperature to 14 K. By linking ultrafast field-driven dynamics to the material's potential landscape, the study demonstrates how HHG is sensitive to quantum phase transitions. The findings reveal an anisotropic component below the CDW transition temperature, providing new insights into the nature of this phase. The investigation highlights the interplay between linear and nonlinear optical responses and their departure from simple perturbative dynamics, offering a fresh perspective on correlated quantum phases in condensed matter systems.
title High harmonic spectroscopy reveals anisotropy of the Mott to Charge-Density-Wave phase transition in TiSe$_2$
topic Strongly Correlated Electrons
Materials Science
Optics
url https://arxiv.org/abs/2409.04216