论文标题
对跨金属到建筑物的转变进行巡回量身定位的转移，v $ _2 $ o $ _3 $
Imaging the itinerant-to-localized transmutation of electrons across the metal-to-insulator transition in V$_2$O$_3$
论文作者
论文摘要
在固体中，电子之间的强烈排斥可以抑制其运动，并导致“莫特”金属对绝缘体转变（MIT），这是一种基本现象，其理解一直是超过50年的挑战。一个关键问题是，由于相互作用的增加，波浪状巡回电子如何变为局部状态。但是，从系统的能量和动量分辨的电子结构来观察MIT，这是探测行程和局部状态的唯一直接方法，这是难以捉摸的。 Here we show, using angle-resolved photoemission spectroscopy (ARPES), that in V$_2$O$_3$ the temperature-induced MIT is characterized by the progressive disappearance of its itinerant conduction band, without any change in its energy-momentum dispersion, and the simultaneous shift to larger binding energies of a quasi-localized state initially located near the Fermi level.
In solids, strong repulsion between electrons can inhibit their movement and result in a "Mott" metal-to-insulator transition (MIT), a fundamental phenomenon whose understanding has remained a challenge for over 50 years. A key issue is how the wave-like itinerant electrons change into a localized-like state due to increased interactions. However, observing the MIT in terms of the energy- and momentum-resolved electronic structure of the system, the only direct way to probe both itinerant and localized states, has been elusive. Here we show, using angle-resolved photoemission spectroscopy (ARPES), that in V$_2$O$_3$ the temperature-induced MIT is characterized by the progressive disappearance of its itinerant conduction band, without any change in its energy-momentum dispersion, and the simultaneous shift to larger binding energies of a quasi-localized state initially located near the Fermi level.
