Non-Josephson emission from intrinsic junctions in Bi2Sr2CaCu2O8+y: Cherenkov radiation by Josephson vortices

被引：151

作者：

Hechtfischer, G

Kleiner, R

Ustinov, AV

Muller, P

机构：

[1] Physikalisches Institut III, Universität Erlangen-Nürnberg, Erlangen

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.79.1365

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated Josephson Vortex flow in intrinsic junctions in Bi2Sr2CaCu2O8+y. In addition to the Josephson radiation we find a strong broadband non-Josephson microwave emission which is not expected for conventional junctions. We explain this non-Josephson signal by Cherenkov radiation occurring when the vortex velocity exceeds the lowest of the N possible mode velocities for electromagnetic waves in an N junction stack.

引用

页码：1365 / 1368

页数：4

共 20 条

[1] VORTEX LATTICE OF HIGHLY ANISOTROPIC LAYERED SUPERCONDUCTORS IN STRONG, PARALLEL MAGNETIC-FIELDS [J].

BULAEVSKII, L ;

CLEM, JR .

PHYSICAL REVIEW B, 1991, 44 (18) :10234-10238

[2] Angular dependence of c-axis plasma frequency and critical current in Josephson-coupled superconductors at high fields [J].

Bulaevskii, LN ;

Maley, M ;

Safar, H ;

Dominguez, D .

PHYSICAL REVIEW B, 1996, 53 (10) :6634-6637

[3]

CHEN JT, 1974, LOW TEMP PHYS, V3, P289

[4] MULTISOLITON EXCITATIONS IN LONG JOSEPHSON-JUNCTIONS [J].

DUEHOLM, B ;

LEVRING, OA ;

MYGIND, J ;

PEDERSEN, NF ;

SOERENSEN, OH ;

CIRILLO, M .

PHYSICAL REVIEW LETTERS, 1981, 46 (19) :1299-1302

[5]

GOLDOBIN E, IN PRESS

[6] Collective motion of Josephson vortices in intrinsic Josephson junctions in Bi2Sr2CaCu2O8+y [J].

Hechtfischer, G ;

Kleiner, R ;

Schlenga, K ;

Walkenhorst, W ;

Muller, P ;

Johnson, HL .

PHYSICAL REVIEW B, 1997, 55 (21) :14638-14644

[7]

HECHTFISCHER G, 1996, P 5 INT SUP EL C ISE, P52

[8] DYNAMICS OF FLUXONS IN A SYSTEM OF COUPLED JOSEPHSON-JUNCTIONS [J].

KIVSHAR, YS ;

MALOMED, BA .

PHYSICAL REVIEW B, 1988, 37 (16) :9325-9330

[9] DYNAMIC BEHAVIOR OF JOSEPHSON-COUPLED LAYERED STRUCTURES [J].

KLEINER, R ;

MULLER, P ;

KOHLSTEDT, H ;

PEDERSEN, NF ;

SAKAI, S .

PHYSICAL REVIEW B, 1994, 50 (06) :3942-3952

[10] 2-DIMENSIONAL RESONANT MODES IN STACKED JOSEPHSON-JUNCTIONS [J].

KLEINER, R .

PHYSICAL REVIEW B, 1994, 50 (10) :6919-6922

← 1 2 →