Phase transition in a single VO2 nano-crystal: potential femtosecond tunable opto-electronic nano-gating

被引：36

作者：

Maaza, M. ^{[1
,2
]}

Simo, A. ^{[1
,2
]}

Itani, B. M. ^{[1
,2
]}

Kana, J. B. Kana ^{[1
,3
]}

El Harthi, S. ^{[1
,2
,4
]}

Bouziane, K. ^{[1
,2
]}

Saboungi, M. L. ^{[1
,2
,5
]}

Doyle, T. B. ^{[1
,2
,6
]}

Luk'yanchuk, I. ^{[1
,2
,7
]}

机构：

[1] Univ S Africa, Coll Grad Studies, ZA-0001 Pretoria, South Africa

[2] Natl Res Fdn South Africa, IThemba LABS, Nanosci African Network NANOAFNET, ZA-7129 Somerset West, Western Cape, South Africa

[3] Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ 85721 USA

[4] Sultan Qaboos Univ, Dept Phys, Coll Sci, Muscat Masqat, Oman

[5] CNRS, Ctr Rech Mat Ultradivisee, F-45071 Orleans, France

[6] Univ KwaZulu Natal, Sch Chem & Phys, ZA-4001 Durban, South Africa

[7] Univ Picardie Jules Verne, LPMC, F-80039 Amiens, France

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2014年 / 16卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

VO2; Mott transition; Single nano-crystal; Band gap; Scanning tunneling spectroscopy; Opto-electronic nano-gating; Instrumentation; INSULATOR-TRANSITION; FILM; NANOSTRUCTURES;

D O I：

10.1007/s11051-014-2397-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The first-order semiconductor-metal Mott transition in single nano-crystal of VO2 has been observed using scanning tunneling spectroscopy. The variation of the band gap E-g with an external thermal stimulus on a single VO2 nano-crystal in the temperature range of 293.5-361.0 K is reported for the first time. The corresponding tuneable I-V characteristics versus temperature could be applied in thermally or optically tunable electronic nano-gating in the femto-second regime in view of the ultrafast dynamic in VO2.

引用

页数：8

共 44 条

[1] SEMICONDUCTOR-TO-METAL TRANSITIONS IN TRANSITION-METAL COMPOUNDS [J].

ADLER, D ;

FEINLEIB, J ;

BROOKS, H ;

PAUL, W .

PHYSICAL REVIEW, 1967, 155 (03) :851-+

[2] ANTIFERROMAGNETISM IN TI2O3 [J].

ADLER, D .

PHYSICAL REVIEW LETTERS, 1966, 17 (03) :139-&

[3]

Appel J., 1968, Solid State Phys, V21, P193, DOI [DOI 10.1016/S0081-1947(08)60741-9, 10.1016/s0081-1947(08)60741-9]

[4] Core/Shell Nano-Structuring of Metal Oxide Semiconductors and their Photocatalytic studies [J].

Balakumar, S. ;

Rakkesh, R. Ajay .

SOLID STATE PHYSICS, VOL 57, 2013, 1512 :34-37

[5] HIGH-CONTRAST OPTICAL STORAGE IN VO2 FILMS [J].

BALBERG, I ;

TROKMAN, S .

JOURNAL OF APPLIED PHYSICS, 1975, 46 (05) :2111-2119

[6] ANISOTROPY OF THE ELECTRICAL CONDUCTIVITY OF VO(2) SINGLE CRYSTALS [J].

Bongers, P. F. .

SOLID STATE COMMUNICATIONS, 1965, 3 (09) :275-277

[7]

Bouchiat FD, 2009, MATER RES SOC S P, V1129, pV14, DOI [10.1557/proc-1129-V14-01, DOI 10.1557/PR0C-1129-V14-01]

[8] Evidence for a structurally-driven insulator-to-metal transition in VO2:: A view from the ultrafast timescale -: art. no. 161102 [J].

Cavalleri, A ;

Dekorsy, T ;

Chong, HHW ;

Kieffer, JC ;

Schoenlein, RW .

PHYSICAL REVIEW B, 2004, 70 (16) :1-4

[9] Optical switch based on vanadium dioxide thin films [J].

Chen, SH ;

Ma, H ;

Yi, XJ ;

Wang, HC ;

Tao, X ;

Chen, MX ;

Li, XW ;

Ke, CJ .

INFRARED PHYSICS & TECHNOLOGY, 2004, 45 (04) :239-242

[10] Nano-Bioglass (NBG) for Bone Regeneration Applications - Preparation and its Characterization [J].

Durgalakshmi, D. ;

Balakumar, S. .

SOLID STATE PHYSICS, VOL 57, 2013, 1512 :122-123

← 1 2 3 4 5 →