用气相输运法制备了准一维结构的NbSe3单晶,并研究了其剩余电阻率与杂质的关系.在电子扫描电镜(SEM)下观测了NbSe3单晶的表面形貌,未见亚微米尺寸的缺陷.NbSe3单晶的电阻温度与温度的关系(ρ-T)曲线表明,NbSe3样品分别在Tp1＝145 K和Tp2＝57 K经历两次Peierls相变,剩余电阻比RRR高于200.根据对不同样品的ρ-T曲线的研究指出,以前的文献用剩余电阻比估计杂质浓度ni的方法是一个错误,并提出了改进措施.
参考文献
| [1] | G.Gruner, The dynamics of charge-density waves, Rev. Mod.Phys., 60, 1129(1988) |
| [2] | P.Monceau, in Electronic Properties of Inorganic Quasi-One-Dimensional Compounds, Part Ⅱ: Experimental, edited by P. Monceau (Kluwer Academic, Dordrecht, 1985) p.137 |
| [3] | P.Monceau, N.P. Ong, A.M.Portis, A.Meerschaut, J.Rouxel, Electric field breakdown of charge-densitywave-induced anomalies in NbSe3, Phys. Rev. Lett., 37, 602(1976) |
| [4] | N.P. Ong, P.Monceau, Anomalous transport properties of a linear-chain metal: NbSe3, Phys. Rev. B, 16,3443(1977) |
| [5] | R.E.Thorne, Charge-density-wave conductors, Physics Today, 5, 42(1996) |
| [6] | R.V.Coleman, G.Eiserman, M.P. Everson, A.Johnson, L.M.Falicov, Evidence for magnetism in the lowtemperature charge-density-wave phase of NbSe3, Phys. Rev. Lett., 55, 863(1985) |
| [7] | R.V.Coleman, M.P.Everson, Hao-An Lu, A.Johnson, L.M.Falicov, Measurement of the charge-density-wave gap of NbSe3 from tunnel-junction spectra, Phys. Rev. B, 41, 460(1990) |
| [8] | C.A.Balseiro, L.M.Falicov, Phys. Rev. Lett., Density waves in high magnetic fields: a metal-insulator transition, 55, 2336(1985); Effect of high magnetic fields on the electronic structure of density-wave systems,Phys. Rev. B, 34, 863(1986) |
| [9] | T.M.Tritt, D.J.Gillespie, A.C.Ehrlich, G.X.Tessema, Charge-density-wave carrier concentration in NbSe3as a function of magnetic field and temperature, Phys.Rev. Lett., 61, 1776(1988) |
| [10] | H.S.J.van der Zant, E.Slot, S.V.Zaitsev-Zotov, S.N.Artmenko, Negative resistance and local charge-densitywave dynamics, Phys. Rev. Lett., 87, 126401(2001) |
| [11] | Yu I.Latyshev, O.Labororde, P. Monceau, Ahronov-Bohm effect on charge density wave (CDW) moving through columnar defects in NbSe3, Phys. Rev. Lett., 78, 919(1997) |
| [12] | P. Zheng, Z.J.Chen, Q.Jiang, D.Jin, Macroscopic quantum coherence in charge density wave whisker NbSe3under strain, J.Phys.: Condens. Matter, 12, 5745(2000) |
| [13] | S.Tanada, T.Tsuneta, Y.Okajima, K.Inagaki, K.Yamaya, N.Hatakenaka, A Mobius strip of single crystals,Nature, 417, 397(2002) |
| [14] | R.E.Thorne, Effect of crystal-growth conditions of charge-density-wave pinning in NbSe3, Phys. Rev. B, 45,5804(1992) |
| [15] | P.Parilla, M.F.Hundley, A.Zettl, Magnetic-field-induced carrier conversion in a charge-density-wave conductor, Phys. Rev. Lett., 57, 619(1986) |
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