Indications of an Electronic Phase Transition in Two-Dimensional Superconducting YBa2Cu3O7-x Thin Films Induced by Electrostatic Doping

被引：47

作者：

Leng, Xiang ^{[1
]}

Garcia-Barriocanal, Javier ^{[1
]}

Yang, Boyi ^{[1
]}

Lee, Yeonbae ^{[1
]}

Kinney, J. ^{[1
]}

Goldman, A. M. ^{[1
]}

机构：

[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 06期

基金：

美国国家科学基金会;

关键词：

T-C SUPERCONDUCTOR; FERMI-SURFACE; HIGH-T(C) SUPERCONDUCTORS; QUANTUM OSCILLATIONS; INSULATOR-TRANSITION; TRANSISTORS; PSEUDOGAP; LAYERS;

D O I：

10.1103/PhysRevLett.108.067004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We successfully tuned an underdoped ultrathin YBa2Cu3O7-x film into the overdoped regime by means of electrostatic doping using an ionic liquid as a dielectric material. This process proved to be reversible. Transport measurements showed a series of anomalous features compared to chemically doped bulk samples and a different two-step doping mechanism for electrostatic doping was revealed. The normal resistance increased with carrier concentration on the overdoped side and the high temperature (180 K) Hall number peaked at a doping level of p similar to 0.15. These anomalous behaviors suggest that there is an electronic phase transition in the Fermi surface around the optimal doping level.

引用

页数：5

共 39 条

[1] Electrostatic modification of novel materials [J].

Ahn, C. H. ;

Bhattacharya, A. ;

Di Ventra, M. ;

Eckstein, J. N. ;

Frisbie, C. Daniel ;

Gershenson, M. E. ;

Goldman, A. M. ;

Inoue, I. H. ;

Mannhart, J. ;

Millis, Andrew J. ;

Morpurgo, Alberto F. ;

Natelson, Douglas ;

Triscone, Jean-Marc .

REVIEWS OF MODERN PHYSICS, 2006, 78 (04) :1185-1212

[2] Electrostatic modulation of superconductivity in ultrathin GdBa2Cu3O7-x films [J].

Ahn, CH ;

Gariglio, S ;

Paruch, P ;

Tybell, T ;

Antognazza, L ;

Triscone, JM .

SCIENCE, 1999, 284 (5417) :1152-1155

[3] HALL-EFFECT IN THE 2-DIMENSIONAL LUTTINGER LIQUID [J].

ANDERSON, PW .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :2092-2094

[4] Quantum Phase Transition in the Magnetic-Field-Induced Normal State of Optimum-Doped High-Tc Cuprate Superconductors at Low Temperatures [J].

Balakirev, F. F. ;

Betts, J. B. ;

Migliori, A. ;

Tsukada, I. ;

Ando, Yoichi ;

Boebinger, G. S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (01)

[5] Signature of optimal doping in Hall-effect measurements on a high-temperature superconductor [J].

Balakirev, FF ;

Betts, JB ;

Migliori, A ;

Ono, S ;

Ando, Y ;

Boebinger, GS .

NATURE, 2003, 424 (6951) :912-915

[6] Superconductor-insulator transition in La2-xSrxCuO4 at the pair quantum resistance [J].

Bollinger, A. T. ;

Dubuis, G. ;

Yoon, J. ;

Pavuna, D. ;

Misewich, J. ;

Bozovic, I. .

NATURE, 2011, 472 (7344) :458-460

[7] Strain release and twin structure in GdBa2Cu3O7-δ films on (001) SrTiO3 and NdGaO3 -: art. no. 113402 [J].

Cao, LX ;

Lee, TL ;

Renner, F ;

Su, Y ;

Johnson, RL ;

Zegenhagen, J .

PHYSICAL REVIEW B, 2002, 65 (11) :1-4

[8] EFFECT OF ZN IMPURITIES ON THE NORMAL-STATE HALL ANGLE IN SINGLE-CRYSTAL YBA2CU3-XZNXO7-DELTA [J].

CHIEN, TR ;

WANG, ZZ ;

ONG, NP .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :2088-2091

[9] Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor [J].

Doiron-Leyraud, Nicolas ;

Proust, Cyril ;

LeBoeuf, David ;

Levallois, Julien ;

Bonnemaison, Jean-Baptiste ;

Liang, Ruixing ;

Bonn, D. A. ;

Hardy, W. N. ;

Taillefer, Louis .

NATURE, 2007, 447 (7144) :565-568

[10] In situ doping control of the surface of high-temperature superconductors [J].

Hossain, M. A. ;

Mottershead, J. D. F. ;

Fournier, D. ;

Bostwick, A. ;

McChesney, J. L. ;

Rotenberg, E. ;

Liang, R. ;

Hardy, W. N. ;

Sawatzky, G. A. ;

Elfimov, I. S. ;

Bonn, D. A. ;

Damascelli, A. .

NATURE PHYSICS, 2008, 4 (07) :527-531

← 1 2 3 4 →