{'fraction_non_alphanumeric': 0.03259604190919674, 'fraction_numerical': 0.011641443538998836, 'mean_word_length': 4.850340136054422, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Magnetic Surface Microtraps for Two-Species Bose-Einstein Condensations

We propose a novel magnetic surface microtrap (i.e. a double Z-wire trap) for the study of two-species Bose-Einstein condensations. The spatial distributions of the magnetic fields from the double Z-wire configurations and their gradients and curvatures are calculated and analysed. The result shows that the proposed surface trap has double magnetic wells and can be continuously changed into a single-well trap by reducing the current in a straight wire, and the maximum field gradient greater than 5×104 G/cm and the maximum field curvature (at each trap centre) greater than 2.5×107 G/cm2 can be generated in our double-well traps, which can be used to realize two-species Bose-Einstein condensations and to study the properties of double-well Bose-Einstein condensations and so on.