SINGLE-DOMAIN SWITCHING INVESTIGATED USING TELEGRAPH NOISE SPECTROSCOPY - POSSIBLE EVIDENCE FOR MACROSCOPIC QUANTUM TUNNELING

被引：31

作者：

COPPINGER, F

GENOE, J

MAUDE, DK

GENNSER, U

PORTAL, JC

SINGER, KE

RUTTER, P

TASKIN, T

PEAKER, AR

WRIGHT, AC

机构：

[1] INST NATL SCI APPL,F-31077 TOULOUSE,FRANCE

[2] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT ELECT ENGN & ELECTR,MANCHESTER M60 1QD,LANCS,ENGLAND

[3] UNIV MANCHESTER,INST SCI & TECHNOL,CTR ELECTR MAT,MANCHESTER M60 1QD,LANCS,ENGLAND

[4] DEESIDE COLL,NE WALES INST,AMRL,CONNAHS QUAY CH5 4HR,CLWYD,WALES

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.75.3513

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Telegraph noise, i.e., two-level fluctuations (TLF), in the magnetoresistance of Er-doped GaAs has been used to probe the magnetic moment of the small ErAs clusters formed during the molecular beam epitaxy growth process. At high temperatures the TLF are thermally activated but below 350 mK tunneling of the magnetization dominates.

引用

收藏

页码：3513 / 3516

页数：4

相关论文

共 13 条

[1] MAGNETOTRANSPORT IN ULTRATHIN ERAS EPITAXIAL LAYERS BURIED IN GAAS [J].

ALLEN, SJ ;

TABATABAIE, N ;

PALMSTROM, CJ ;

MOUNIER, S ;

HULL, GW ;

SANDS, T ;

DEROSA, F ;

GILCHRIST, HL ;

GARRISON, KC .

SURFACE SCIENCE, 1990, 228 (1-3) :13-15

[2] ERAS EPITAXIAL LAYERS BURIED IN GAAS - MAGNETOTRANSPORT AND SPIN-DISORDER SCATTERING [J].

ALLEN, SJ ;

TABATABAIE, N ;

PALMSTROM, CJ ;

HULL, GW ;

SANDS, T ;

DEROSA, F ;

GILCHRIST, HL ;

GARRISON, KC .

PHYSICAL REVIEW LETTERS, 1989, 62 (19) :2309-2312

[3] LOW-NOISE MODULAR MICROSUSCEPTOMETER USING NEARLY QUANTUM LIMITED DC SQUIDS [J].

AWSCHALOM, DD ;

ROZEN, JR ;

KETCHEN, MB ;

GALLAGHER, WJ ;

KLEINSASSER, AW ;

SANDSTROM, RL ;

BUMBLE, B .

APPLIED PHYSICS LETTERS, 1988, 53 (21) :2108-2110

[4] MACROSCOPIC QUANTUM TUNNELING IN ANTIFERROMAGNETS [J].

BARBARA, B ;

CHUDNOVSKY, EM .

PHYSICS LETTERS A, 1990, 145 (04) :205-208

[5] LIGHT-ACTIVATED TELEGRAPH NOISE IN ALGAAS TUNNEL BARRIERS - OPTICAL PROBING OF A SINGLE DEFECT [J].

CAMPBELL, PM ;

SNOW, ES ;

MOORE, WJ ;

GLEMBOCKI, OJ ;

KIRCHOEFER, SW .

PHYSICAL REVIEW LETTERS, 1991, 67 (10) :1330-1333

[6]

COPPINGER F, 1995, P ICPS 22, V2, P1791

[7] DISSIPATIVE QUANTUM TUNNELING OF A SINGLE MICROSCOPIC DEFECT IN A MESOSCOPIC METAL [J].

GOLDING, B ;

ZIMMERMAN, NM ;

COPPERSMITH, SN .

PHYSICAL REVIEW LETTERS, 1992, 68 (07) :998-1001

[8] GIANT DISCRETE RESISTANCE FLUCTUATIONS OBSERVED IN NORMAL-METAL TUNNEL-JUNCTIONS [J].

JIANG, XG ;

DUBSON, MA ;

GARLAND, JC .

PHYSICAL REVIEW B, 1990, 42 (09) :5427-5432

[9] GROWTH AND STRUCTURAL CHARACTERIZATION OF MOLECULAR-BEAM EPITAXIAL ERBIUM-DOPED GAAS [J].

POOLE, I ;

SINGER, KE ;

PEAKER, AR ;

WRIGHT, AC .

JOURNAL OF CRYSTAL GROWTH, 1992, 121 (1-2) :121-131

[10] SELF-ORGANIZING GROWTH OF ERBIUM ARSENIDE QUANTUM DOTS AND WIRES IN GALLIUM-ARSENIDE BY MOLECULAR-BEAM EPITAXY [J].

SINGER, KE ;

RUTTER, P ;

PEAKER, AR ;

WRIGHT, AC .

APPLIED PHYSICS LETTERS, 1994, 64 (06) :707-709