By expressing the Holstein-Primakoff transformation in a symmetric form a new spin-polaron technique for treating the triangular-lattice antiferromagnet is developed. With the technique, we have treated an extended t-J model, calculated the quasiparticle dispersion, and compared the dispersion with that obtained by other method. PACS: 74.20.-z, 71.27.+a, 75.30.Gw
K. Takada, H. Sakurai, E. Takayama-Muromachi, F. Izumi, R. Dilanian, T. Sasaki. Nature 422, 53 (2003)
D. Qian, L. Wray, D. Hsieh, D. Wu, J.L. Luo, N.L. Wang, A. Kuprin, A. Fedorov, R.J. Cava, L. Viciu, M.Z. Hasan. Phys. Rev. Lett. 96, 046 407 (2006)
M.Z. Hasan, Y.-D. Chuang, D. Qian, Y.W. Li, Y. Kong, A. Kuprin, A.V. Fedorov, R. Kimmerling, E. Rotenberg, K. Rossnagel, Z. Hussain, H. Koh, N.S. Rogado, M.L. Foo, R.J. Cava. Phys. Rev. Lett. 92, 246 402 (2004)
R.E. Schaak, T. Klimczuk, M.L. Foo, R.J. Cava. Nature 424, 527 (2003)
S.J. Miyake. Prog. Theor. Phys. 74, 468 (1985)
P.W. Leung, K.J. Runge. Phys. Rev. B 47, 5861 (1993)
S. Schmitt-Rink, C.M. Varma, A.E. Ruckenstein. Phys. Rev. Lett. 60, 2793 (1988)
Z. Liu, E. Manousakis. Phys. Rev. B 45, 2425 (1992)
F. Marsiglio, A.E. Ruckenstein, S. Schmitt-Rink, C.M. Varma. Phys. Rev. B 43, 10 882 (1991)
C. Kim, P.J. White, Z.-X. Shen, T. Tohyama, Y. Shibata, S. Maekawa, B.O. Wells, Y.J. Kim, R.J. Birgeneau, M.A. Kastner. Phys. Rev. Lett. 80, 4245 (1998)
D.S. Marshall, D.S. Dessau, A.G. Loeser, C.-H. Park, A.Y. Matsuura, J.N. Eckstein, I. Bozovic, P. Fournier, A. Kapitulnik, W.E. Spicer, Z.-X. Shen. Phys. Rev. Lett. 76, 4841 (1996)
A.E. Trumper, C.J. Gazza, L.O. Manuel. Phys. Rev. B 69, 184 407 (2004)
M. Azzouz, T. Dombre. Phys. Rev. B 53, 402 (1996)
H.M. Fretwell, A. Kaminski, J. Mesot, J.C. Campuzano, M.R. Norman, M. Randeria, T. Sato, R. Gatt, T. Takahashi, K. Kadowaki. Phys. Rev. Lett. 84, 4449 (2000)
H.-B. Yang, S.-C. Wang, A.K. Sekharan, H. Matsui, S. Souma, T. Sato, T. Takahashi, T. Takeuchi, J.C. Campuzano, R. Jin, B.C. Sales, D. Mandrus, Z. Wang, H. Ding. Phys. Rev. Lett. 92, 246 403 (2004)