H2020Индивидуална стипендия2020–2023

SUMAC · Interplay between High-Temperature Superconductivity, Magnetism and Composition in Doped Cuprates

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2020-11-02 → 2023-04-23
Финансиране от ЕС: 219 312 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Купратите се изследват, за да се разбере дали магнитните им свойства причиняват свръхпроводността – способността за пренос на ток без загуба на енергия. Разбирането на този механизъм може да помогне за създаването на по-ефективен транспорт на енергия в ИТ сектора и транспорта.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Interplay between High-Temperature Superconductivity, Magnetism and Composition in Doped Cuprates

The Action "Interplay between High-Temperature Superconductivity, Magnetism and Composition in Doped Cuprates" (SUMAC for short) aims at unraveling the origin of high-temperature superconductivity - one of the greatest unsolved problems in physics. Superconductors are materials that can conduct electricity without any resistance and therefore without energy loss: superconductors could be seen as the most efficient means of energy transport. As a result, these materials exhibit great potential for many applications, for example in the energy, IT and transport sectors. While this could make a large impact for society, there is a major challenge to overcome: no superconductivity has been observed at room temperature, under normal atmospheric conditions, greatly limiting its potential. In fact, the origin of superconductivity is not yet fully understood. Cuprates are a particular class of superconductors, with their unique crystal structure, and these materials are the topic of this Action. It is well-known that the superconducting properties of cuprates are affected by their composition and doping. However, there is also ample evidence that the magnetic properties of cuprates are correlated to the superconducting properties, but a true understanding remains. Therefore, the main research question of SUMAC is: does the superconducting mechanism has its origin in the magnetic properties of the material? The objectives of SUMAC are to (1) synthesize cuprates (powders, pellets and crystals) with various chemical compositions and doping, and to (2) determine the superconducting and magnetic properties of the synthesized compounds. Neutron scattering plays an important role in this action, as it is the go-to technique to study both the static and dynamic magnetic properties of compounds, that are suspected to play a large role to the superconducting properties.

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

Цел на проекта

The origin of high-temperature (high-T) superconductivity (SC) is one of the greatest unsolved problems in physics. The solution could potentially lead to room temperature SC with immense technological benefits. There is ample evidence that microscopic magnetic correlations and dynamics are coupled to high-T SC, but a true understanding remains. The proposed research focusses on the effect of dopants on magnetic and SC properties of La2-xSrxCuO4 (LSCO) cuprates. The main research question is: does the SC mechanism has its origin in the magnetic properties of the material? This will be tackled in three ways: 1) The applicant will determine if the new theoretical prediction of the SC transition temperature increase with very small impurity content is justified for LSCO. This whole new effect will strengthen the case for magnetism-induced SC. 2) The applicant will study the low-temperature magnetic phase of LSCO when SC is fully suppressed by doping and field to provide new insights into the nature of intrinsic magnetic tendencies of LSCO. 3) The applicant will synthesize single crystals of completely new cuprates by replacing Sr by Sn, Zr and Ga to study how the ionic radii affect the magnetism-SC interplay. The project involves crystal synthesis, XRD, VSM and transport measurements and has a strong focus on elastic and inelastic neutron scattering experiments and data analysis. The applicant’s physics background and PhD in materials chemistry provide a strong basis for the experiments. The interdisciplinary nature of UCPH creates the ideal environment: the main supervisor Prof. Lefmann is an expert in neutron scattering with decades of experience, has all necessary physical characterization equipment and is a well-appreciated academic teacher. All relevant chemistry infrastructure and knowledge can be found within UCPH and close collaborators. In return, the applicant’s expertise in materials and crystallography will be a great addition to the Lefmann group.

Оригинален текст от CORDIS (на английски).

Участници

KOBENHAVNS UNIVERSITET · KOBENHAVNКоординаторДания