DOI QR코드

DOI QR Code

VRu(001) 표면의 자성에 대한 제일원리 연구

First-principles Study on the Magnetism of VRu(001) Surface

  • Jang, Y.R. (Department of Physics, University of Incheon) ;
  • Song, Ki-Myung (Department of Physics, Inha University) ;
  • Lee, J.I. (Department of Physics, Inha University)
  • 발행 : 2007.06.30

초록

CsCl 구조를 가진 VRu(001) 표면의 자기적 성질을 일반기울기근사(GGA)를 채택한 총퍼텐셜선형보강평면파(FLAPW) 에너지 띠 계산 방법을 이용하여 이론적으로 연구하였다. 이를 위해 각기 V 및 Ru 원자층으로 끝나는 두 개의 (001) 표면을 고려하였다. 계산된 머핀-틴 구 내의 다수 및 소수 전자의 수로부터 V로 끝나는 표면의 자기모멘트는 $1.71_{{\mu}_B}$로 매우 큰 값을 가졌으며, Ru로 끝나는 표면은 자성이 거의 없는 것으로 계산되었다. 이러한 자성을 계산된 스핀분극상태밀도와 스핀전하밀도와 연관지어 설명하였다.

We investigated the magnetic properties of VRu(001) surface by using the all electron full-potenial linearized augmented planewave (FLAPW) energy band method within the GGA. We consider two different configurations, V and Ru surface layers, respectively. The V atoms in surface layer was calculated to have large magnetic moment of $1.71_{{\mu}_B}$ while the Ru surface layer to have nearly nonmagnetic state. The calculated spin-polarized density of states. spin density contour, and charge density were discussed in relation to the magnetic properties of VRu(001) surface.

키워드

참고문헌

  1. A. J. Freeman and R. Wu, J. Magn. Magn. Mater., 100, 497 (1991) https://doi.org/10.1016/0304-8853(91)90837-Z
  2. S. Ohnishi, A. J. Freeman, and M. Weinert, Phys. Rev. B, 28, 6741 (1983) https://doi.org/10.1103/PhysRevB.28.6741
  3. A. Rubio-Ponce, A. E. Garcia, and R. Baquero, Rev. Mex. Fis., 49, 411 (2003)
  4. S. Blugel, Europhys. Lett., 7, 743 (1988) https://doi.org/10.1209/0295-5075/7/8/013
  5. S. Blugel and P. H. Dederichs, Europhys. Lett., 9, 597 (1989) https://doi.org/10.1209/0295-5075/9/6/018
  6. T. Zhang and G. Y. Guo, Phys. Rev. B, 71, 214442 (2005) https://doi.org/10.1103/PhysRevB.71.214442
  7. M. J. Zhu, D. M. Bylander, and L. Kleinman, Phys. Rev. B, 42, 2874 (1990) https://doi.org/10.1103/PhysRevB.42.2874
  8. O. Eriksson, R. C. Albers, and A. M. Boring, Phys. Rev. Lett., 66, 1350 (1991) https://doi.org/10.1103/PhysRevLett.66.1350
  9. S. Blugel, Phys. Rev. B, 51, 2551 (1995)
  10. I. Turek, S. Blugel, and J. Kudrnovsky, Phys. Rev. B, 57, R11065 (1998) https://doi.org/10.1103/PhysRevB.57.R11065
  11. E. Wimmer, H. Krakauer, M. Weinert, and A. J. Freeman, Phys. Rev. B, 24, 864 (1981) https://doi.org/10.1103/PhysRevB.24.864
  12. M. Weinert, E. Wimmer, and A. J. Freeman, Phys. Rev. B, 26, 4571 (1982) https://doi.org/10.1103/PhysRevB.26.4571
  13. P. Hohenberg and W. Kohn, Phys. Rev., 136, B864 (1964)
  14. W. Kohn and L. J. Sham, Phys. Rev., 140, A1133 (1965) https://doi.org/10.1103/PhysRev.140.A1133
  15. D. D. Koelling and B. N. Harmon, J. Phys. C, 10, 3107 (1997) https://doi.org/10.1088/0022-3719/10/16/019
  16. J. P. Perdew, K. Burke, and Y. Wang, Phys. Rev. B, 54, 16533 (1996) https://doi.org/10.1103/PhysRevB.54.16533