Study of anomalous electronic phenomena in phase boundary/coexistence phase using commercially available laser ultrahigh resolution photoemission spectroscopy

我已经建立了商用激光光电发射系统，并实现了370微电子伏特的能量分辨率，使我们能够测量铌和V_3Si的超导带隙。这是第一次使用商用激光器实现优于1 meV的能量分辨率。使用该系统容易实现180 ueV的能量分辨率。此外，我还在国际上首次成功地观测到了k-（BEDT-TTF）_2Cu（NCS）_2的超导带隙。

I have constructed commercially available laser photoemission system and achieved 370 ueV of energy resolution that enables us to measure superconducting gap of niobium and V3Si. It is first time to realize the energy resolution better than 1meV using commercially available laser. 180 ueV of energy resolution is easily realized using this system. Additionally, I have succeeded to observe the superconducting gap of k-(BEDT -TTF)_2Cu(NCS)_2 for the first time in the world.