Molecular enhancement of ferromagnetism in GaAs/GaMnAs heterostructures

被引：14

作者：

Carmeli, Itai ^{[1
]}

Bloom, Francisco

Gwinn, E. G.

Kreutz, T. C.

Scoby, Cheyne

Gossard, A. C.

Ray, S. G.

Naaman, Ron

机构：

[1] Univ Calif Santa Barbara, Calif Nanosyst Inst, Santa Barbara, CA 93016 USA

[2] Weizmann Inst Sci, Dept Chem Phys, IL-76100 Rehovot, Israel

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2236935

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors investigate effects of chemisorption of polar organic molecules onto ferromagnetic GaAs/GaMnAs heterostructures. The chemisorbed heterostructures exhibit striking anisotropic enhancement of the magnetization, while GaAs substrates that are physisorbed with the same molecules show no change in magnetic properties. Thus the enhanced magnetism of the chemisorbed heterostructures reflects changes in spin alignment that arise from surface bonding of the organic monolayer. (c) 2006 American Institute of Physics.

引用

页数：3

共 20 条

[1]

ALBOLFATH M, 2001, PHYS REV B, V63

[2] Ferromagnetism and canted spin phase in AlAs/Ga1-xMnxAs single quantum wells:: Monte Carlo simulation [J].

Boselli, MA ;

Ghazali, A ;

Lima, ICD .

PHYSICAL REVIEW B, 2000, 62 (13) :8895-8902

[3] Magnetism induced by the organization of self-assembled monolayers [J].

Carmeli, I ;

Leitus, G ;

Naaman, R ;

Reich, S ;

Vager, Z .

JOURNAL OF CHEMICAL PHYSICS, 2003, 118 (23) :10372-10375

[4] Molecular control over semiconductor surface electronic properties: Dicarboxylic acids on CdTe, CdSe, GaAs, and InP [J].

Cohen, R ;

Kronik, L ;

Shanzer, A ;

Cahen, D ;

Liu, A ;

Rosenwaks, Y ;

Lorenz, JK ;

Ellis, AB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (45) :10545-10553

[5] Permanent magnetism, magnetic anisotropy, and hysteresis of thiol-capped gold nanoparticles -: art. no. 087204 [J].

Crespo, P ;

Litrán, R ;

Rojas, TC ;

Multigner, M ;

de la Fuente, JM ;

Sánchez-López, JC ;

García, MA ;

Hernando, A ;

Penadés, S ;

Fernández, A .

PHYSICAL REVIEW LETTERS, 2004, 93 (08) :087204-1

[6] Injection and detection of a spin-polarized current in a light-emitting diode [J].

Fiederling, R ;

Keim, M ;

Reuscher, G ;

Ossau, W ;

Schmidt, G ;

Waag, A ;

Molenkamp, LW .

NATURE, 1999, 402 (6763) :787-790

[7] Prospects for high temperature ferromagnetism in (Ga,Mn)As semiconductors -: art. no. 165204 [J].

Jungwirth, T ;

Wang, KY ;

Masek, J ;

Edmonds, KW ;

König, J ;

Sinova, J ;

Polini, M ;

Goncharuk, NA ;

MacDonald, AH ;

Sawicki, M ;

Rushforth, AW ;

Campion, RP ;

Zhao, LX ;

Foxon, CT ;

Gallagher, BL .

PHYSICAL REVIEW B, 2005, 72 (16)

[8] Interlayer coupling in ferromagnetic semiconductor superlattices [J].

Jungwirth, T ;

Atkinson, WA ;

Lee, BH ;

MacDonald, AH .

PHYSICAL REVIEW B, 1999, 59 (15) :9818-9821

[9] (Ga,Mn)As as a digital ferromagnetic heterostructure [J].

Kawakami, RK ;

Johnston-Halperin, E ;

Chen, LF ;

Hanson, M ;

Guébels, N ;

Speck, JS ;

Gossard, AC ;

Awschalom, AA .

APPLIED PHYSICS LETTERS, 2000, 77 (15) :2379-2381

[10] Modification of ferromagnetism in semiconductors by molecular monolayers [J].

Kreutz, TC ;

Gwinn, EG ;

Artzi, R ;

Naaman, R ;

Pizem, H ;

Sukenik, CN .

APPLIED PHYSICS LETTERS, 2003, 83 (20) :4211-4213

← 1 2 →