González-Férez Rosario, Shertzer Janine, Sadeghpour H R
Instituto Carlos I de Física Teórica y Computacional, and Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain.
ITAMP, Center for Astrophysics, Harvard & Smithsonian, Cambridge, Massachusetts 02138 USA.
Phys Rev Lett. 2021 Jan 29;126(4):043401. doi: 10.1103/PhysRevLett.126.043401.
We predict that ultralong-range Rydberg bimolecules form in collisions between polar molecules in cold and ultracold settings. The interaction of Λ-doublet nitric oxide (NO) with long-lived Rydberg NO(nf, ng) molecules forms ultralong-range Rydberg bimolecules with GHz energies and kilo-Debye permanent electric dipole moments. The Hamiltonian includes both the anisotropic charge-molecular dipole interaction and the electron-NO scattering. The rotational constant for the Rydberg bimolecules is in the MHz range, allowing for microwave spectroscopy of rotational transitions in Rydberg bimolecules. Considerable orientation of NO dipole can be achieved. The Rydberg molecules described here hold promise for studies of a special class of long-range bimolecular interactions.
我们预测，在冷态和超冷态环境下，极性分子之间的碰撞会形成超长程里德堡双分子。Λ 双重态一氧化氮（NO）与长寿命里德堡 NO(nf, ng) 分子的相互作用会形成具有吉赫兹能量和千德拜永久电偶极矩的超长程里德堡双分子。哈密顿量包括各向异性电荷 - 分子偶极相互作用以及电子 - NO 散射。里德堡双分子的转动常数处于兆赫兹范围，这使得对里德堡双分子转动跃迁进行微波光谱学研究成为可能。可以实现 NO 偶极的显著取向。这里描述的里德堡分子有望用于研究一类特殊的长程双分子相互作用。
