HEИндивидуална стипендия2023–2025

Twist-TOC · Probing emergent phenomena in twisted WSe2 using THz-on-Chip spectroscopy

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2023-09-01 → 2025-08-31
Финансиране от ЕС: 189 687 €
Участници: 1
Схема: HORIZON-TMA-MSCA-PF-EF

Линиите свързват координатора с партньорите.

Накратко на български

Слоеве от селенид на волфрам (WSe2), завъртани един спрямо друг, се анализират чрез терахерцова спектроскопия. Това помага за разбирането на физичните процеси и нискоенергийните фази в сложни материали от типа на моаре.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Probing emergent phenomena in twisted WSe2 using THz-on-Chip spectroscopy

The aim of this project was to investigate low-energy phases in gate-tunable van der Waals heterostructures using on-chip terahertz (THz) spectroscopy, with particular relevance to twisted WSe2. Achieving this objective required establishing, validating and quantitatively understanding the experimental platform necessary to apply this technique reliably to complex Moiré materials.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Understanding how strong electron-electron correlations shape the behavior of quantum materials is important both for fundamental scientific discovery and future technological applications. For example, determining the role of electron correlations in unconventional superconductivity could allow scientists to design a room temperature superconductor. However, complicated materials and lack of in situ tuning parameters limit progress. Twisted WSe2 (tWSe2), like other van der Waals heterostructures , possesses in situ tunability of both doping and displacement field, providing a tractable model system with unprecedented control which may be described by a simple, single orbital triangular Hubbard model. In TwistTOC, I will investigate the strongly correlated dynamics and possible superconducting phase in moiré superlattices of tWSe2 using on-chip terahertz (THz) spectroscopy. The group of Dr James McIver at the Max Planck Institute for the Structure and Dynamics of Matter is the ideal host organization as they are pioneering the use of on-chip THz spectroscopy for investigating graphene-based vdW heterostructures. This technique uniquely probes the material response on the energy scale resonant with the emergent phenomena, containing a wealth of information, such as direct signatures of superconductivity. Using this platform, I will study the origin of the correlated insulating state observed at half-filling and characterize the frequency dependence of the metal to insulator transition. Next, I will investigate the nature of the possible superconducting phase in tWSe2. These studies will further our understanding of tWSe2, provide insight for theoretical models, and potentially shed light on unconventional superconductors with similar phenomenology. This project will provide me with the technical and leadership skills necessary to forge future research directions investigating the equilibrium and non-equilibrium THz response of a wide variety of quantum materials.

Оригинален текст от CORDIS (на английски).

Участници

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV · MUNCHENКоординаторГермания