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Prominent Quasiparticle Peak in the Photoemission Spectrum of the Metallic Phase of V 2 O 3

2003; American Physical Society; Volume: 90; Issue: 18 Linguagem: Inglês

10.1103/physrevlett.90.186403

1092-0145

Sung‐Kwan Mo, Jonathan D. Denlinger, H.-D. Kim, Jae‐Hoon Park, J. W. Allen, A. Sekiyama, A. Yamasaki, Koji Kadono, S. Suga, Y. Saitoh, Takayuki Muro, P. Metcalf, G. Keller, Karsten Held, Volker Eyert, В. И. Анисимов, D. Vollhardt,

Magnetic and transport properties of perovskites and related materials

We present the first observation of a prominent quasiparticle peak in the photoemission spectrum of the metallic phase of V2O3 and report new spectral calculations that combine the local-density approximation with the dynamical mean-field theory (using quantum Monte Carlo simulations) to show the development of such a distinct peak with decreasing temperature. The experimental peak width and weight are significantly larger than in the theory.