Strongly Interacting Gas of Two-Electron Fermions at an Orbital Feshbach Resonance
نویسندگان
چکیده
منابع مشابه
Superfluidity in a gas of strongly interacting fermions.
After an introduction into 100 years of research on superfluidity and the concept of the BCS-BEC crossover, we describe recent experimental studies of a spin-polarized Fermi gas with strong interactions. Tomographically resolving the spatial structure of an inhomogeneous trapped sample, we have mapped out the superfluid phases in the parameter space of temperature, spin polarization, and intera...
متن کاملOrbital Feshbach Resonance in Alkali-Earth Atoms.
For a mixture of alkali-earth atomic gas in the long-lived excited state ^{3}P_{0} and the ground state ^{1}S_{0}, in addition to nuclear spin, another "orbital" index is introduced to distinguish these two internal states. In this Letter we propose a mechanism to induce Feshbach resonance between two atoms with different orbital and nuclear spin quantum numbers. Two essential ingredients are t...
متن کاملTwo-electron excitation of an interacting cold Rydberg gas.
We report the creation of an interacting cold Rydberg gas of strontium atoms. We show that the excitation spectrum of the inner valence electron is sensitive to the interactions in the Rydberg gas, even though they are mediated by the outer Rydberg electron. By studying the evolution of this spectrum we observe density-dependent population transfer to a state of higher angular momentum l. We de...
متن کاملStrongly Interacting Electron Systems
Transition metal oxides form crystals that have phases with exotic properties such as high temperature superconductivity, ferromagnetism, ferroelectricity, and charge and orbital ordering. Often these phases are in competition with each other leading to complicated phase diagrams, for example YBa2Cu3O7, which is a high temperature superconductor, and LaMnO3, which exhibits a “colossal magneto r...
متن کاملAn interacting Fermi-Fermi mixture at the crossover of a narrow Feshbach resonance
This work describes experiments with quantum-degenerate atomic mixtures at ultracold temperatures, where quantum statistics determine macroscopic system properties. The first heteronuclear molecules at ultracold temperatures are formed in a quantum degenerate two-species Fermi-Fermi mixture on the repulsive side of a narrow s-wave Feshbach resonance. Elastic collisions in this mixture are inves...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2015
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.115.265301