Unusual Non-magnetic Metallic State in Narrow Silicon Carbon Nanoribbons by Electron or Hole Doping

다국어 초록 (Multilingual Abstract)

We investigated the width (N) dependence on the magnetization of N-ZSiC NR with electron and hole doping on the basis of systematic DFT calculations. The critical values of the upper and down critical concentration to give the maximum and zero magnetic moment at edge Si/C atoms by electron/hole doping (xup,e, xdown,e, xup,h, and xdown,h) depend on the width of N-ZSiC NR. Moreover, due to xup,e ≠ xup,h and xdown,e ≠ xdown,h, the electron and hole doping effect are asymmetry, i.e, the critical electron doping value (xdown,e) is smaller than the critical hole doping value (xdown,h) and is almost independent of the width of NZSiC NR though the other critical values of the electron and hole doping that influence the magnetization of N-ZSiC NR depend on the width. It was also found that at xdown,e or xdown,h doping, the N-ZSiC NR turns into unusual non-magnetic metallic state. The magnetic behavior was discussed based on the band structures and projected density of states (PDOS) under the effect of electron/hole doping.

참고문헌 (Reference)

1 Žuti , I., 76 : 323-, 2004

2 Wu, F., 94 : 223105-, 2009

3 Guo, J., 92 : 163109-, 2008

4 Muñoz-Rojas, F., 102 : 136810-, 2009

5 León, A., 94 : 173111-, 2009

6 Zheng, X. H., 95 : 123109-, 2009

7 Nguyen, V. H., 106 : 053710-, 2009

8 Castro Neto, A., 81 : 109-, 2009

9 Han, M. Y., 98 : 206-805, 2007

10 Berger, C., 312 : 1191-, 2006

11 Ci, L., 1 : 116-, 2008

12 Chen, Z., 40 : 228-, 2007

13 Cancado, L. G., 93 : 047403-, 2004

14 Lee, H., 72 : 174431-, 2005

15 Ezawa, M., 73 : 045432-, 2006

16 Son, Y. W., 97 : 216803-, 2006

17 Ezawa, M., 76 : 245415-, 2007

18 Ezawa, M., 40 : 1421-, 2008

19 Son, Y. W., 444 : 347-, 2006

20 Hod, O., 7 : 2295-, 2007

21 Kan, E. J., 91 : 243116-, 2007

22 Hod, O., 77 : 035411-, 2008

23 Fujita, M., 65 : 1920-, 1996

24 Wakabayashi, K., 59 : 8271-, 1999

25 Barone, V., 6 : 2748-, 2006

26 Kudin, K. N., 2 : 516-, 2008

27 27. Sawada, K., 1 : 064004-, 2008

28 Sawada, K., 9 : 269-, 2009

29 Sergio, D. D., 112 : 8196-, 2008

30 Zhang, X. W., 113 : 4662-, 2009

31 Li, Y., 113 : 15043-, 2009

32 Sharma, R., 113 : 14771-, 2009

33 Lu, Y. H., 113 : 20841-, 2009

34 Li, Y., 3 : 1952-, 2009

35 Nduwimana, A., 3 : 1995-, 2009

36 Kinder, J. M., 9 : 1980-, 2009

37 Hod, O., 9 : 2619-, 2009

38 Biel, B., 9 : 2725-, 2009

39 Cantele, G., 9 : 3425-, 2009

40 Lee, H., 10 : 793-, 2010

41 Kim, W. Y., 43 : 111-, 2010

42 Wassmann, T., 132 : 3440-, 2010

43 Zheng, X. H., 114 : 4190-, 2010

44 Wu, M., 114 : 3937-, 2010

45 Lee, Y. L., 4 : 1345-, 2010

46 Lottermoser, T., 430 : 541-, 2004

47 Eerenstein, W., 6 : 348-, 2007

48 Lou, P., 113 : 21213-, 2009

49 Lou, P., 114 : 10947-, 2010

50 Kim, W. Y., 3 : 408-, 2008

51 Perdew, J. P., 77 : 3865-, 1996

52 Troullier, N., 43 : 1993-, 1991

53 Ozaki, T., 67 : 155108-, 2003

54 Ozaki, T., 69 : 195113-, 2004

55 Lou, P., 113 : 12637-, 2009

56 Sun, L., 129 : 174114-, 2008

57 Ozaki, T., "OpenMXWebsite"