Concise mechanism of terahertz wave emission from mesoscopic crystals of Bi2Sr2CaCu2O8

被引：8
作者：
Zhou, Wei [1 ,2 ]
Wang, Chen [2 ]
Chen, Qing-Hu [1 ,2 ]
机构：
[1] Zhejiang Normal Univ, Ctr Stat & Theoret Condensed Matter Phys, Jinhua 321004, Peoples R China
[2] Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 18期
基金：
中国国家自然科学基金;
关键词：
INTRINSIC JOSEPHSON-JUNCTIONS; SINGLE-CRYSTALS; SUPERCONDUCTORS; EQUATIONS;
D O I：
10.1103/PhysRevB.82.184514
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The terahertz (THz) emission mechanism in Bi2Sr2CaCu2O8 with an external magnetic field is studied theoretically. A radiation power formula for a small-size sample is proposed. The total power is proportional to the square of the number of superconducting layers and the frequency. Under the small-size limitation, the angular distribution of the power is similar to that in the dipole radiation. The THz power output is in the same order of magnitude as the experimental ones. By analyzing the spectra, a series of size-dependent intrinsic frequencies are observed. We show that the radiation power is enhanced when the supercurrent frequency tuned by the external current resonates with the intrinsic ones.
引用
收藏
页数：5
相关论文
共 25 条
  • [1] Josephson-vortex-flow terahertz emission in layered High-Tc superconducting single crystals
    Bae, Myung-Ho
    Lee, Hu-Jong
    Choi, Jae-Hyun
    [J]. PHYSICAL REVIEW LETTERS, 2007, 98 (02)
  • [2] Radiation from a single Josephson junction into free space due to Josephson oscillations
    Bulaevskii, L. N.
    Koshelev, A. E.
    [J]. PHYSICAL REVIEW LETTERS, 2006, 97 (26)
  • [3] TIME-DEPENDENT EQUATIONS FOR PHASE DIFFERENCES AND A COLLECTIVE MODE IN JOSEPHSON-COUPLED LAYERED SUPERCONDUCTORS
    BULAEVSKII, LN
    ZAMORA, M
    BAERISWYL, D
    BECK, H
    CLEM, JR
    [J]. PHYSICAL REVIEW B, 1994, 50 (17): : 12831 - 12834
  • [4] Fiske modes and Eck steps in long Josephson junctions: Theory and experiments
    Cirillo, M
    Gronbech-Jensen, N
    Samuelsen, MR
    Salerno, M
    Rinati, GV
    [J]. PHYSICAL REVIEW B, 1998, 58 (18) : 12377 - 12384
  • [5] Materials for terahertz science and technology
    Ferguson, B
    Zhang, XC
    [J]. NATURE MATERIALS, 2002, 1 (01) : 26 - 33
  • [6] Stable Sarma state in two-band Fermi systems
    He, Lianyi
    Zhuang, Pengfei
    [J]. PHYSICAL REVIEW B, 2009, 79 (02):
  • [7] Direct observation of tetrahertz electromagnetic waves emitted from intrinsic Josephson junctions in single crystalline Bi2Sr2CaCu2O8+δ
    Kadowaki, K.
    Yamaguchi, H.
    Kawamata, K.
    Yamamoto, T.
    Minami, H.
    Kakeya, I.
    Welp, U.
    Ozyuzer, L.
    Koshelev, A.
    Kurter, C.
    Gray, K. E.
    Kwok, W. -K.
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2008, 468 (7-10): : 634 - 639
  • [8] INTRINSIC JOSEPHSON EFFECTS IN BI2SR2CACU2O8 SINGLE-CRYSTALS
    KLEINER, R
    STEINMEYER, F
    KUNKEL, G
    MULLER, P
    [J]. PHYSICAL REVIEW LETTERS, 1992, 68 (15) : 2394 - 2397
  • [9] Resonant electromagnetic emission from intrinsic Josephson-junction stacks with laterally modulated Josephson critical current
    Koshelev, A. E.
    Bulaevskii, L. N.
    [J]. PHYSICAL REVIEW B, 2008, 77 (01)
  • [10] Alternating dynamic state self-generated by internal resonance in stacks of intrinsic Josephson junctions
    Koshelev, A. E.
    [J]. PHYSICAL REVIEW B, 2008, 78 (17):
123