Tetrahedral Magnetic Order and the Metal-Insulator Transition in the Pyrochlore Lattice of Cd2Os2O7

被引：109

作者：

Yamaura, J. ^{[1
]}

Ohgushi, K. ^{[1
]}

Ohsumi, H. ^{[2
]}

Hasegawa, T. ^{[3
]}

Yamauchi, I. ^{[1
]}

Sugimoto, K. ^{[4
]}

Takeshita, S. ^{[2
]}

Tokuda, A. ^{[2
,5
]}

Takata, M. ^{[2
,4
]}

Udagawa, M. ^{[3
]}

Takigawa, M. ^{[1
]}

Harima, H. ^{[6
]}

Arima, T. ^{[2
,7
]}

Hiroi, Z. ^{[1
]}

机构：

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

[2] RIKEN, SPring Ctr 8, Sayo, Hyogo 6795148, Japan

[3] Hiroshima Univ, Grad Sch Integrated Arts & Sci, Higashihiroshima, Hiroshima 7398521, Japan

[4] SPring 8, Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

[5] Kwansei Gakuin Univ, Dept Phys, Sanda, Hyogo 6691339, Japan

[6] Kobe Univ, Grad Sch Sci, Dept Phys, Kobe, Hyogo 6578501, Japan

[7] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 24期

关键词：

POWDER NEUTRON-DIFFRACTION; CRYSTALS; SPRING-8;

D O I：

10.1103/PhysRevLett.108.247205

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Cd2Os2O7 shows a peculiar metal-insulator transition at 227 K with magnetic ordering in a frustrated pyrochlore lattice, but its magnetic structure in the ordered state and the transition origin are yet uncovered. We observed a commensurate magnetic peak by resonant x-ray scattering in a high-quality single crystal. X-ray diffraction and Raman scattering experiments confirmed that the transition is not accompanied with any spatial symmetry breaking. We propose a noncollinear all-in-all-out spin arrangement on the tetrahedral network made of Os atoms. Based on this we suggest that the transition is not caused by the Slater mechanism as believed earlier but by an alternative mechanism related to the formation of the specific tetrahedral magnetic order on the pyrochlore lattice in the presence of strong spin-orbit interactions.

引用

页数：5

共 50 条

[1] Continuous metal-insulator transition in the pyrochlore Cd2Os2O7 -: art. no. 195104
Mandrus, D
Thompson, JR
Gaal, R
Forro, L
Bryan, JC
Chakoumakos, BC
Woods, LM
Sales, BC
Fishman, RS
Keppens, V
[J]. PHYSICAL REVIEW B, 2001, 63 (19)
[2] Lifshitz metal-insulator transition induced by the all-in/all-out magnetic order in the pyrochlore oxide Cd2Os2O7
Hiroi, Z.
Yamaura, J.
Hirose, T.
Nagashima, I.
Okamoto, Y.
[J]. APL MATERIALS, 2015, 3 (04):
[3] Terahertz nano-imaging of metal-insulator transition in Cd2Os2O7
Jing, Ran
Xiong, Lin
Hirose, Hishiro T.
Shao, Yinming
Mcleod, Alex S.
Chen, Xinzhong
Liu, Mengkun
Hiroi, Zenji
Basov, D. N.
[J]. EPL, 2022, 137 (05)
[4] Phase transition and magnetic structure of pyrochlore oxide Cd2Os2O7
Yamaura, J.
Ohsumi, H.
Sugimoto, K.
Tsutsui, S.
Yoda, Y.
Takeshita, S.
Tokuda, A.
Kitao, S.
Kurokuzu, M.
Seto, M.
Yamauchi, I.
Ohgushi, K.
Takigawa, M.
Arima, T.
Hiroi, Z.
[J]. INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2011), 2012, 391
[5] Optical Spectroscopic Studies of the Metal-Insulator Transition Driven by All-In-All-Out Magnetic Ordering in 5d Pyrochlore Cd2Os2O7
Sohn, C. H.
Jeong, Hogyun
Jin, Hosub
Kim, Soyeon
Sandilands, L. J.
Park, H. J.
Kim, K. W.
Moon, S. J.
Cho, Deok-Yong
Yamaura, J.
Hiroi, Z.
Noh, T. W.
[J]. PHYSICAL REVIEW LETTERS, 2015, 115 (26)
[6] Metal-Insulator Transition and Magnetic Order in the Pyrochlore Oxide Hg2Ru2O7
Yoshida, Makoto
Takigaway, Masashi
Yamamoto, Ayako
Takagi, Hidenori
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2011, 80 (03)
[7] Electronic bandstructures on 5d-transition metal pyrochlore:: Cd2Re2O7 and Cd2Os2O7
Harima, H
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2002, 63 (6-8) : 1035 - 1038
[8] SEMICONDUCTOR-METAL TRANSITION IN NOVEL CD2OS2O7
SLEIGHT, AW
GILLSON, JL
WEIHER, JF
BINDLOSS, W
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1975, 12 (3-4) : 406 - 406
[9] Pyrochlore oxide Hg2Os2O7 on verge of metal-insulator boundary
Kataoka, Kota
Hirai, Daigorou
Koda, Akihiro
Kadono, Ryosuke
Honda, Takashi
Hiroi, Zenji
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2022, 34 (13)
[10] Magnetic Excitations across the Metal-Insulator Transition in the Pyrochlore Iridate Eu2Ir2O7
Chun, Sae Hwan
Yuan, Bo
Casa, Diego
Kim, Jungho
Kim, Chang-Yong
Tian, Zhaoming
Qiu, Yang
Nakatsuji, Satoru
Kim, Young-June
[J]. PHYSICAL REVIEW LETTERS, 2018, 120 (17)

← 1 2 3 4 5 →