Please wait a minute...
Chin. Phys. B, 2015, Vol. 24(2): 027502    DOI: 10.1088/1674-1056/24/2/027502
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Schwinger-boson approach to anisotropy ferrimagnetic chain with bond alternation

Li Yin-Xianga, Chen Binb
a Business School, University of Shanghai for Science and Technology, Shanghai 200093, China;
b Tin Ka-Ping College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China
Abstract  We use the Schwinger-boson approach to study the anisotropy ferrimagnetic spin-(1/2,1) chain with bond alternation. Based on the effect of bond alternation δ, we obtain energy gap, free energy, and specific heat, respectively. The specific heat with larger bond alternation (δ>0.7) displays a peak at low temperature. Based on the effect of XXZ anisotropy parameter Δ, we present excited spectrums, free energy, and specific heat, respectively.
Keywords:  Schwinger-boson approach      bond alternation      XXZ anisotropy      ferrimagnetic spin chain     
Received:  29 August 2014      Published:  05 February 2015
PACS:  75.40.Cx (Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.))  
  75.50.Gg (Ferrimagnetics)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10774035) and the Qianjiang RenCai Program of Zhejiang Province, China (Grant No. 2007R0010).
Corresponding Authors:  Li Yin-Xiang     E-mail:  yinxiangl@hotmail.com

Cite this article: 

Li Yin-Xiang, Chen Bin Schwinger-boson approach to anisotropy ferrimagnetic chain with bond alternation 2015 Chin. Phys. B 24 027502

[1] Haldane F D M 1983 Phys. Rev. Lett. 50 1153
[2] Yang G and Chen B 2014 Chin. Phys. Lett. 31 060506
[3] Kolezhuk A K, Mikeska H J and Yamamoto S 1997 Phys. Rev. B 55 R3336
[4] Tian G S 1997 Phys. Rev. B 56 5355
[5] Fukui T and Kawakami N 1997 Phys. Rev. B 55 R14709
[6] Xian Y 1995 Phys. Rev. B 52 12485
[7] Pati S K, Ramasesha S and Sen D 1997 Phys. Rev. B 55 8894
[8] Abolfath M and Langari A 2001 Phys. Rev. B 63 144414
[9] Sakai T and Okamoto K 2002 Phys. Rev. B 65 214403
[10] Yamamoto S and Fukui T 1998 Phys. Rev. B 57 R14008
[11] Yamamoto S 1999 Phys. Rev. B 59 1024
[12] Langari A, Abouie J, Asadzaheh M Z and Rezai M 2011 J. Stat. Mech. P08001
[13] Chen B, Zhang Z F and Han R S 2004 Physica B 349 1
[14] Arovas D P and Auerbach A 1988 Phys. Rev. B 38 316
[15] Auerbach A and Arovas D P 1988 Phys. Rev. Lett. 61 617
[16] Wu C J, Chen B, Dai X, Yue Y and Su Z B 1999 Phys. Rev. B 60 1057
[1] Dyson-Maleev theory of an X X Z ferrimagnetic spin chain with single-ion anisotropy
Yu-Ge Chen(陈宇戈), Yin-Xiang Li(李殷翔), Li-Jun Tian(田立君), Bin Chen(陈斌). Chin. Phys. B, 2018, 27(12): 127501.
No Suggested Reading articles found!