主题：【已应助】求美国科学学会会刊--PNAS四篇！

1.Postperovskite phase equilibria in the MgSiO3–Al2O3 system
Jun Tsuchiya  and Taku Tsuchiya

http://www.pnas.org/content/105/49/19160.abstract

2.Prediction of incommensurate crystal structure in Ca at high pressure

Sergiu Arapan Ho-kwang Mao and Rajeev Ahuja

http://www.pnas.org/content/105/52/20627.abstract

3.Electronic and magnetic structures of the postperovskite-type Fe2O3 and Implications for planetary magnetic records and deep interiors
Sang-Heon Shima,1, Amelia Bengtsonb, Dane Morganb, Wolfgang Sturhahnc, Krystle Catallia, Jiyong Zhaoc, Michael Lerchec,d and Vitali Prakapenkae

http://www.pnas.org/content/early/2009/03/10/0808549106.abstract


4.Crystal structure of the pressure-induced metallic phase of SiH4 from ab initio theory

D. Y. Kima, R. H. Scheichera, S. Lebègueb, J. Prasongkita, B. Arnaudc, M. Alouanid, and R. Ahujaa,

http://www.pnas.org/content/105/43/16454.abstract