Binary Mixture of quasi one dimensional dipolar Bose Einstein Condensates with tilted dipoles

TL;DR

This paper investigates a quasi-one-dimensional dipolar Bose-Einstein condensate mixture of Er and Dy atoms, exploring how tilting dipoles affects miscibility and phase transitions through theoretical modeling and numerical solutions.

Contribution

It introduces a generalized inter-species potential accounting for dipole tilting angles and analyzes the resulting miscibility transition in a dipolar BEC mixture.

Findings

Transition from miscible to immiscible phases with dipole orientation changes

Tilted dipoles significantly influence the mixture's phase behavior

Atom number variations affect the miscibility transition

Abstract

We consider a $^{168}$Er-$^{164}$Dy dipolar mixture, trapped by a cigar shaped harmonic potential. We derive the quasi-1D inter-species effective potential exhibiting the tilting angles and show that it is a quite natural generalization of the situation of a single dipolar gas. By solving the coupled Gross-Pitaevskii equations, we observe a transition from miscible to immiscible mixture as the orientations of the magnetic moments are varied. The atom numbers are also shown to lead to noticeable effects on the mixture.