Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature
Halide perovskites enable polaritonic XY spin Hamiltonian at room temperature
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DOI：
10.1038/s41563-022-01276-4
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发表时间：
2022-06
期刊：
影响因子：
41.2
通讯作者：
Renjie Tao;K. Peng;Louis Haeberlé;Quanwei Li;D. Jin;G. Fleming;S. Kéna‐Cohen;Xiang Zhang;W. Bao
中科院分区：
文献类型：
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作者：
Renjie Tao;K. Peng;Louis Haeberlé;Quanwei Li;D. Jin;G. Fleming;S. Kéna‐Cohen;Xiang Zhang;W. Bao
激子极化激元是半导体光学腔中的半光半物质准粒子，在玻色-爱因斯坦凝聚、非平衡多体物理和高温模拟等方面有着广阔的应用前景。然而，一个室温极化激子平台与GaAs量子威尔斯生长的分子束外延在低温下仍然难以捉摸。这样一个平台的操作要求长寿命，强烈相互作用的激子在一个严格的材料系统，大而纳米尺度薄的几何形状和均匀的属性。在这里，我们通过采用基于在纳米约束下生长的激子卤化物钙钛矿的溶液合成的方法来解决这一挑战。这种纳米限制生长有利于合成光滑均匀的单晶大晶体，使XY哈密顿晶格的尺寸达到10 × 10。有了这个演示，我们进一步建立了钙钛矿作为一个有前途的平台，室温极化激元物理和铺平了道路，在室温下实现强大的模式无序无极化激元器件。
Exciton polaritons, the part-light and part-matter quasiparticles in semiconductor optical cavities, are promising for exploring Bose–Einstein condensation, non-equilibrium many-body physics and analogue simulation at elevated temperatures. However, a room-temperature polaritonic platform on par with the GaAs quantum wells grown by molecular beam epitaxy at low temperatures remains elusive. The operation of such a platform calls for long-lifetime, strongly interacting excitons in a stringent material system with large yet nanoscale-thin geometry and homogeneous properties. Here, we address this challenge by adopting a method based on the solution synthesis of excitonic halide perovskites grown under nanoconfinement. Such nanoconfinement growth facilitates the synthesis of smooth and homogeneous single-crystalline large crystals enabling the demonstration ofXYHamiltonian lattices with sizes up to 10 × 10. With this demonstration, we further establish perovskites as a promising platform for room temperature polaritonic physics and pave the way for the realization of robust mode-disorder-free polaritonic devices at room temperature.