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arXiv 1001.0477cond-mat.str-el
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X射线吸收研究V2O3中Mott转变的不等价途径

Inequivalent routes across the Mott transition in V2O3 explored by X-ray absorption

F. Rodolakis, P. Hansmann, J. -P. Rueff, A. Toschi, M. W. Haverkort, G. Sangiovanni, A. Tanaka, T. Saha-Dasgupta, O. K. Andersen, K. Held, M. Sikora, I. Alliot,… 展开作者

F. Rodolakis, P. Hansmann, J. -P. Rueff, A. Toschi, M. W. Haverkort, G. Sangiovanni, A. Tanaka, T. Saha-Dasgupta, O. K. Andersen, K. Held, M. Sikora, I. Alliot, J. -P. Itié, F. Baudelet, P. Wzietek, P. Metcalf, M. Marsi

摘要:

通过高分辨X射线吸收光谱研究了温度、掺杂和压力对V2 O3在金属-绝缘体转变过程中电子结构的影响。与迄今为止被认为是理所当然的相反,在压力下达到的金属相显示出不同于通过改变掺杂或温度获得的金属相。使用一种新的计算方案,我们将这种影响的作用和占用的a1 g轨道。这一发现揭示了V_2O_3中Mott转变的不同途径的不等价性

英文摘要:

The changes in the electronic structure of V2O3 across the metal-insulator transition induced by temperature, doping and pressure are identified using high resolution x-ray absorption spectroscopy at the V pre K-edge. Contrary to what has been taken for granted so far, the metallic phase reached under pressure is shown to differ from the one obtained by changing doping or temperature. Using a novel computational scheme, we relate this effect to the role and occupancy of the a1g orbitals. This finding unveils the inequivalence of different routes across the Mott transition in V2O3

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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