Direct Observation of Decoupled Structural and Electronic Transitions and an Ambient Pressure Monoclinic-Like Metallic Phase of VO$_2$

التفاصيل البيبلوغرافية
العنوان: Direct Observation of Decoupled Structural and Electronic Transitions and an Ambient Pressure Monoclinic-Like Metallic Phase of VO$_2$
المؤلفون: Laverock, J., Kittiwatanakul, S., Zakharov, A. A., Niu, Y. R., Chen, B., Wolf, S. A., Lu, J. W., Smith, K. E.
المصدر: Phys. Rev. Lett. 113, 216402 (2014)
سنة النشر: 2014
المجموعة: Condensed Matter
مصطلحات موضوعية: Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
الوصف: We report the simultaneous measurement of the structural and electronic components of the metal-insulator transition of VO$_2$ using electron and photoelectron spectroscopies and microscopies. We show that these evolve over different temperature scales, and are separated by an unusual monoclinic-like metallic phase. Our results provide conclusive evidence that the new monoclinic-like metallic phase, recently identified in high-pressure and nonequilibrium measurements, is accessible in the thermodynamic transition at ambient pressure, and we discuss the implications of these observations on the nature of the MIT in VO$_2$.
نوع الوثيقة: Working Paper
DOI: 10.1103/PhysRevLett.113.216402
URL الوصول: http://arxiv.org/abs/1411.4532
رقم الأكسشن: edsarx.1411.4532
قاعدة البيانات: arXiv
الوصف
DOI:10.1103/PhysRevLett.113.216402