Superradiance from crystals of molecular nanomagnets

被引：73

作者：

Chudnovsky, EM

Garanin, DA

机构：

[1] CUNY Herbert H Lehman Coll, Dept Phys & Astron, Bronx, NY 10468 USA

[2] Univ Mainz, Inst Phys, D-55099 Mainz, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.89.157201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that crystals of molecular nanomagnets can exhibit giant magnetic relaxation due to the Dicke superradiance of electromagnetic waves. Rigorous theory is presented that combines superradiance with the Landau-Zener effect.

引用

页码：1 / 157201

页数：4

共 24 条

[1] High-frequency EPR spectra of a molecular nanomagnet: Understanding quantum tunneling of the magnetization [J].

Barra, AL ;

Gatteschi, D ;

Sessoli, R .

PHYSICAL REVIEW B, 1997, 56 (13) :8192-8198

[2]

Chudnovsky EM, 2002, PHYS REV B, V66, DOI 10.1103/PhysRevB.66.054412

[3] Spin tunneling via dislocations in Mn12 acetate crystals -: art. no. 187203 [J].

Chudnovsky, EM ;

Garanin, DA .

PHYSICAL REVIEW LETTERS, 2001, 87 (18) :187203-1

[4] High-frequency resonant experiments in Fe8 molecular clusters [J].

del Barco, E ;

Hernandez, JM ;

Tejada, J ;

Biskup, N ;

Achey, R ;

Rutel, I ;

Dalal, N ;

Brooks, J .

PHYSICAL REVIEW B, 2000, 62 (05) :3018-3021

[5] COHERENCE IN SPONTANEOUS RADIATION PROCESSES [J].

DICKE, RH .

PHYSICAL REVIEW, 1954, 93 (01) :99-110

[6] Macroscopic quantum tunnelling and hysteresis loops of mesoscopic magnets [J].

Dobrovitski, VV ;

Zvezdin, AK .

EUROPHYSICS LETTERS, 1997, 38 (05) :377-382

[7] Macroscopic measurement of resonant magnetization tunneling in high-spin molecules [J].

Friedman, JR ;

Sarachik, MP ;

Tejada, J ;

Ziolo, R .

PHYSICAL REVIEW LETTERS, 1996, 76 (20) :3830-3833

[8] GENERALIZED EQUATION OF MOTION FOR A FERROMAGNET [J].

GARANIN, DA .

PHYSICA A, 1991, 172 (03) :470-491

[9] Tunneling of a large spin via hyperfine interactions [J].

Garanin, DA ;

Chudnovsky, EM ;

Schilling, R .

PHYSICAL REVIEW B, 2000, 61 (18) :12204-12208

[10] Inverse problem for the Landau-Zener effect [J].

Garanin, DA ;

Schilling, R .

EUROPHYSICS LETTERS, 2002, 59 (01) :7-13

← 1 2 3 →