Experimental exploration of novel semimetal state in strong anisotropic Pyrochlore iridate Nd2Ir2O7 under high magnetic field

被引：3

作者：

Tian, Z. M. ^{[1
]}

Kohama, Y. ^{[1
]}

Tomita, T. ^{[1
]}

Ishikawa, J. ^{[1
]}

Mairo, H. ^{[1
]}

Kindo, K. ^{[1
]}

Nakatsuji, S. ^{[1
,2
]}

机构：

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

[2] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

TMU INTERNATIONAL SYMPOSIUM ON NEW QUANTUM PHASES EMERGING FROM NOVEL CRYSTAL STRUCTURE | 2016年 / 683卷

关键词：

D O I：

10.1088/1742-6596/683/1/012024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the anisotropic magnetotransport of Nd2Ir2O7 single crystal under high magnetic field (B) up to 50 T with B along various directions. Only for B // [001] direction, a novel semimetal state is realized under high magnetic field evidenced by a field-induced insulating-semimetalic phase transition with critical field B-MI similar to 12 T related to the destruction of all-in-all-out (AIAO) state. In contrast, abnormal magnetotransport hysteresis behavior is observed for B // [111] direction below the metal-insulator transition temperature (T-MI), and magnetotransport reveals the Ir spin structure keep in the AIAO state under high magnetic field with temperature just below T-MI,T- in prospect to realize Weyl semimetal state.

引用

页数：6

共 10 条

[1] Time-Reversal Symmetry Breaking and Consequent Physical Responses Induced by All-In-All-Out Type Magnetic Order on the Pyrochlore Lattice
Arima, Taka-hisa
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2013, 82 (01)
[2] Anisotropic release of the residual zero-point entropy in the spin ice compound Dy2Ti2O7:: Kagome ice behavior -: art. no. 014415
Higashinaka, R
Fukazawa, H
Maeno, Y
[J]. PHYSICAL REVIEW B, 2003, 68 (01):
[3] Mobile metallic domain walls in an all-in-all-out magnetic insulator
Ma, Eric Yue
Cui, Yong-Tao
Ueda, Kentaro
Tang, Shujie
Chen, Kai
Tamura, Nobumichi
Wu, Phillip M.
Fujioka, Jun
Tokura, Yoshinori
Shen, Zhi-Xun
[J]. SCIENCE, 2015, 350 (6260) : 538 - 541
[4] Time-reversal symmetry breaking and spontaneous Hall effect without magnetic dipole order
Machida, Yo
Nakatsuji, Satoru
Onoda, Shigeki
Tayama, Takashi
Sakakibara, Toshiro
[J]. NATURE, 2010, 463 (7278) : 210 - 213
[5] Metal-Insulator Transitions in Pyrochlore Oxides Ln2Ir2O7
Matsuhira, Kazuyuki
Wakeshima, Makoto
Hinatsu, Yukio
Takagi, Seishi
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2011, 80 (09)
[6] Mott physics and band topology in materials with strong spin-orbit interaction
Pesin, Dmytro
Balents, Leon
[J]. NATURE PHYSICS, 2010, 6 (05) : 376 - 381
[7] Structure and magnetic properties of the pyrochlore iridate Y2Ir2O7
Shapiro, M. C.
Riggs, Scott C.
Stone, M. B.
de la Cruz, C. R.
Chi, S.
Podlesnyak, A. A.
Fisher, I. R.
[J]. PHYSICAL REVIEW B, 2012, 85 (21):
[8] Emergence of Magnetic Long-range Order in Frustrated Pyrochlore Nd2Ir2O7 with Metal-Insulator Transition
Tomiyasu, Keisuke
Matsuhira, Kazuyuki
Iwasa, Kazuaki
Watahiki, Masanori
Takagi, Seishi
Wakeshima, Makoto
Hinatsu, Yukio
Yokoyama, Makoto
Ohoyama, Kenji
Yamada, Kazuyoshi
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2012, 81 (03)
[9] Anomalous domain-wall conductance in pyrochlore-type Nd2Ir2O7 on the verge of the metal-insulator transition
Ueda, K.
Fujioka, J.
Takahashi, Y.
Suzuki, T.
Ishiwata, S.
Taguchi, Y.
Kawasaki, M.
Tokura, Y.
[J]. PHYSICAL REVIEW B, 2014, 89 (07)
[10] Metallic Interface Emerging at Magnetic Domain Wall of Antiferromagnetic Insulator: Fate of Extinct Weyl Electrons
Yamaji, Youhei
Imada, Masatoshi
[J]. PHYSICAL REVIEW X, 2014, 4 (02):

← 1 →