Magnetic-Field-Induced Insulator-Metal Transition in (Pr1-yYy)0.7Ca0.3CoO3 at Ultrahigh Magnetic Fields

被引：6

作者：

Lee, Suyeon ^{[1
]}

Matsuda, Yasuhiro H. ^{[1
]}

Naito, Tomoyuki ^{[2
]}

Nakamura, Daisuke ^{[1
]}

Takeyama, Shojiro ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Iwate Univ, Fac Engn, Morioka, Iwate 0208551, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2015年 / 84卷 / 04期

关键词：

TRANSPORT; LA1-XSRXCOO3; LACOO3;

D O I：

10.7566/JPSJ.84.044703

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The (Pr1-yYy)(0.7)Ca0.3CoO3 (y >= 0.0625) compounds show a first-order metal-insulator (MI) transition and simultaneous spin-state (SS) transition upon a change in the temperature. We have measured the electrical resistivity of the samples with y = 0.075 (the transition temperature, T-MI = 64 K) and 0.10 (T-MI = 93 K) in ultrahigh magnetic fields of up to 120 T using a contactless radio-frequency transmission technique. We observed a magnetic-field-induced insulator-metal (IM) transition with large hysteresis below T-MI and obtained the temperature-magnetic field phase diagrams. A possible mechanism of the field-induced IM and SS transitions is discussed.

引用

页数：5

共 9 条

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PHYSICAL REVIEW B, 2014, 89 (18):
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[4] Low Temperature Magnetic Properties of Pr0.7(Ca,Sr)0.3CoO3 Oxides
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PHYSICAL REVIEW MATERIALS, 2023, 7 (02)
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[7] Energy relaxation in (La0.6Pr0.4)0.7Ca0.3MnO3 films across the metal-insulator transition
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[8] Nanostructure Induced Metal-Insulator Transition and Enhanced Low-Field Magnetoresistance in La0.7Sr0.3MnO3 Systems
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