We have investigated the thin films of a copper(II) β-diketonate complex by using a multi-technique approach including X-ray photoelectron spectroscopy, high-frequency electron paramagnetic resonance, and magnetic circular dichroism spectroscopy. This complex, Cu(dbm)₂ (Hdbm is dibenzoyl methane), is a potential molecular quantum bit. We have demonstrated that Cu(dbm)₂ can be successfully evaporated under controlled conditions. We have further studied the stability of the obtained films in air down to the monolayer regime. The results show that Cu(dbm)₂ thin films have very good stability, also in comparison to other potential molecular quantum bits. Understanding the stability of this class of materials plays an important role when moving from academic investigations to environments that mimic those of working devices. In this respect, thermally and air stable thin films are a key step towards applications.

中文翻译：

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基于铜（ii）的潜在分子量子位的薄膜性质和稳定性†

我们已经使用多种技术方法，包括X射线光电子能谱，高频电子顺磁共振和磁圆二色性光谱，研究了铜（II）β-二酮铜络合物的薄膜。Cu（dbm）₂（Hdbm是二苯甲酰甲烷）这种络合物是潜在的分子量子位。我们已经证明了Cu（dbm）₂可以在受控条件下成功蒸发。我们进一步研究了所获得的薄膜在空气中直至单层状态的稳定性。结果表明Cu（dbm）₂与其他潜在的分子量子位相比，薄膜具有非常好的稳定性。从学术研究转向模仿工作设备的环境时，了解此类材料的稳定性起着重要作用。在这方面，热和空气稳定的薄膜是迈向应用的关键一步。