H2020Индивидуална стипендия2020–2022

SIMIS · Strongly Interacting Mass Imbalanced Superfluid with ultracold fermions

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

Период: 2020-07-01 → 2022-06-30
Финансиране от ЕС: 174 167 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Смеси от ултрастудени атоми на диспрозий и калий се използват за създаване на суперфлуиди с различна маса на частиците. Това помага за experimentally проверка на теоретични предсказания за нови, нестандартни състояния на материята.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Strongly Interacting Mass Imbalanced Superfluid with ultracold fermions

The project aims at novel superfluid states in mixtures of ultracold fermionic atoms. Using different atomic species introduces mass imbalance into the problem, which according to theoretical predictions favors the emergence of unconventional superfluids. Such superfluids have been widely discussed in the theoretical literature, but have been elusive in the lab. With the mixture of dysprosium and potassium atoms, we have introduced a new and very promising platform for experimental research along these lines. A central objective is the realization of the first mass-imbalanced superfluid system of fermions.

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

Цел на проекта

Superfluids violate our classical intuition, provoking many intriguing questions in modern condensed matter physics. In particular, superfluid phases with non-standard pairing mechanisms, which play an essential role in diverse physical systems including high-Tc superconductivity, have attracted great interests, and the underlying principles challenge our understanding. Ultracold atomic systems have emerged as an ideal testbed for simulating such many-body states by directly comparing theories with experiments. Recently, the host group has achieved a novel mass-imbalanced Fermi-Fermi mixture, which offers unprecedented opportunities to realize unusual superfluid phases. Here, we propose experimental studies on unconventional superfluidity by exploiting the excellent controllability in our new quantum system.Mass imbalance changes how the two Fermi surfaces overlap, causing the pairs to have finite momentum and resulting in a rich phase diagram. We aim to explore many-body phases appearing in a mass-imbalanced Fermi-Fermi mixture near the strongly interacting limit. To demonstrate superfluidity, we will probe the atoms by magnetic and optic methods, which allow distinguishing between pairs and unpaired atoms. Moreover, we will investigate the superfluid shell structure in a trapped system to characterize the phase diagram and the thermodynamic properties in the strongly interacting regime, based on tomographic imaging. Finally, we plan to extend our methods to search for exotic forms of superfluidity such as supersolid or gapless phases.Our research will open a new chapter of condensed-matter simulation with ultracold atoms by providing a unique platform to study unconventional superfluidity. The successful demonstration will have strong impact on the scientific community even beyond the field of quantum gases. The techniques applied in this project can be further developed to address many other interesting topics such as impurity physics and transport dynamics.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITAET INNSBRUCK · InnsbruckКоординаторАвстрия