STM/STS studies on vortex-lattice and antiferromagnetism under high magnetic fields in high-Tc cuprates
高温铜酸盐强磁场下涡旋晶格和反铁磁性的STM/STS研究
基本信息
- 批准号:15340104
- 负责人:
- 金额:$ 9.47万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Recently, it has been reported in neutron scattering experiments on La214 high-Tc cuprate that an antiferromagnetic order is induced by the application of magnetic fields in the superconducting state and coexists with the superconductivity. In STM/STS experiments on Bi2212 high-Tc cuprate, it has also been reported that the electronic energy spectrum in vortex cores exhibits the so-called "pseudogap", which is a characteristic feature for the normal state above Tc. In addition, STM/STS experiments on Bi2212 suggested that an electronic charge order with a periodicity of 〜4a×4a develops around vortex cores ; the charge order will be related with the field-induced antiferromagnetic order. In this research project, we have studied the 〜4a×4a charge order by STM/STS on Bi2212, in order to obtain clues to the understanding of the field-induced antiferromagnetic order, the pseudogap and the superconducting mechanism.1. There exist two kinds of Bi2212 samples which exhibit strong and weak 〜4a×4a charge orders in the pseudogap state.2. The pseudogap size is more spatially-inhomogeneous in the Bi2212 sample which exhibits a stronger 〜4a×4a charge order.The latter result seems to indicate that the electronic charge order in the pseudogap state will be dynamically fluctuated in itself ; when there exist a lot of scattering centers causing the spatial inhomogeneity of electronic states, they will act as pinning potentials for the dynamically-fluctuated charge order and make it static.
最近,在LA214高-TC铜酸盐的中子散射实验中,据报道,抗铁磁序是由在超导状态中应用磁场并具有超导性的共鸣剂引起的。在BI2212高-TC铜矿上的STM/STS实验中,还报道了涡旋芯中的电子能谱表现出所谓的“ PseudoGAP”,这是TC上方正常状态的特征。此外,在BI2212上进行的STM/STS实验表明,周期性的电子电荷顺序在涡流核周围开发〜4A×4A。电荷顺序将与现场诱导的抗磁磁性顺序有关。在该研究项目中,我们在BI2212上研究了〜4A×4A电荷顺序,以获取了解野外诱导的抗磁磁性秩序,伪PSEUDOGAP和超导机制的线索。1。存在两种类型的BI2212样品,它们在伪PSEUDOGAP状态下表现出强大和弱的〜4A×4A电荷顺序。2。在BI2212样品中,假成量的大小在空间上更加均匀,该样品表现出强大的〜4A×4A电荷顺序。后者的结果似乎表明,假PAP的电子电荷顺序将在其本身中动态波动。当存在许多散射中心,导致电子状态的空间不均匀性时,它们将充当固定动态电荷的电荷顺序的潜力,并使其成为静态。
项目成果
期刊论文数量(57)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
STM/STS Study on 4a×4a Electronic Charge Order of Superconducting Bi_2Sr_2CaCu_2O<8+δ>
超导Bi_2Sr_2CaCu_2O<8+δ>4a×4a电子电荷有序性的STM/STS研究
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:A.J.Drew;D.O.G.Heron;U.K.Divakar;S.L.Lee;R.Gilardi;J.Mesot;F.Y.Ogrin;D.Charalambous;N.Momono;M.Oda;C.Baines;N.Momono et al.;A.Hashimoto et al.;N.Momono et al.
- 通讯作者:N.Momono et al.
STM/STS Study on 4a×4a Electronic Charge Modulation of Bi_2Sr_2CaCu_2O_<8+δ>
Bi_2Sr_2CaCu_2O_<8+δ> 4a×4a电子电荷调制的STM/STS研究
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:A.J.Drew et al.;A.Hashimoto et al.
- 通讯作者:A.Hashimoto et al.
Spin dynamics in the mixed phase of La_<2-x>Sr_xCuO_4 (x=0.10,x=0.17)
La_<2-x>Sr_xCuO_4 (x=0.10,x=0.17)混合相中的自旋动力学
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:M.Oda;Y.Tanaka;A.Hashimoto;N.Momono;M.Ido;N.Momono et al.;R.Gilardi et al.;N.Momono et al.;N.Momono;T.Matsuzaki et al.;R.Gilardi et al.;R.Gilardi et al.
- 通讯作者:R.Gilardi et al.
STM/STS study on local electronic states of underdoped Bi_2Sr_2CaCu_2O_<8+δ>
欠掺杂Bi_2Sr_2CaCu_2O_<8+δ>局域电子态的STM/STS研究
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:K.Mimura;et al.;N.Momono et al.;A.Hashimoto et al.;N.Momono et al.;R.Gilardi et al.;N.Momono et al.
- 通讯作者:N.Momono et al.
Direct observation of the flux-line vortex glass phase in a type II superconductor
- DOI:10.1103/physrevlett.92.237004
- 发表时间:2004-06-11
- 期刊:
- 影响因子:8.6
- 作者:Divakar, U;Drew, AJ;Baines, C
- 通讯作者:Baines, C
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{{ truncateString('ODA Migaku', 18)}}的其他基金
STM studies on magnetic field induced electronic charge order
磁场感应电子电荷序的STM研究
- 批准号:
22540357 - 财政年份:2010
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Scanning tunneling microscopy studies on Andreev reflection and pseudogap in high-T_c cuprate superconductors
高温铜酸盐超导体中Andreev反射和赝能隙的扫描隧道显微镜研究
- 批准号:
12640327 - 财政年份:2000
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Scanning tunneling microscopy studies on Zhang-Rice singlet state and high-TィイD2cィエD2 superconductivity
张莱斯单线态和高T2D2超导的扫描隧道显微镜研究
- 批准号:
09440126 - 财政年份:1997
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
STM studies on the pairing symmetry and pair breaking of high-Tc cuprates
高温铜酸盐配对对称性和配对破缺的STM研究
- 批准号:
07640458 - 财政年份:1995
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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