Spin-orbit coupled molecular quantum magnetism realized in inorganic solid

被引：14

作者：

Park, Sang-Youn ^{[1
]}

Do, S. -H. ^{[1
,2
]}

Choi, K. -Y. ^{[2
]}

Kang, J. -H. ^{[3
]}

Jang, Dongjin ^{[3
]}

Schmidt, B. ^{[3
]}

Brando, Manuel ^{[3
]}

Kim, B. -H. ^{[4
,5
]}

Kim, D. -H. ^{[1
,6
]}

Butch, N. P. ^{[7
]}

Lee, Seongsu ^{[8
]}

Park, J. -H. ^{[1
,6
,9
]}

Ji, Sungdae ^{[1
,6
]}

机构：

[1] Pohang Univ Sci & Technol, Max Planck POSTECH Ctr Complex Phase Mat, Pohang 37673, South Korea

[2] Chung Ang Univ, Dept Phys, Seoul 06911, South Korea

[3] Max Planck Inst Chem Phys Solid, D-01187 Dresden, Germany

[4] RIKEN, iTHES Res Grp, Wako, Saitama 3510198, Japan

[5] RIKEN, Computat Condensed Matter Phys Lab, Wako, Saitama 3510198, Japan

[6] Pohang Univ Sci & Technol, Dept Phys, Pohang 37673, South Korea

[7] NIST, NIST Ctr Neutron Res, Gaithersburg, MD 20899 USA

[8] Korea Atom Energy Res Inst, Div Neutron Sci, HANARO, Daejeon 34057, South Korea

[9] Pohang Univ Sci & Technol, Div Adv Mat Sci, Pohang 37673, South Korea

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

基金：

新加坡国家研究基金会;

关键词：

SPECTROSCOPY; EXCITATIONS; DIMERS; IONS;

D O I：

10.1038/ncomms12912

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Molecular quantum magnetism involving an isolated spin state is of particular interest due to the characteristic quantum phenomena underlying spin qubits or molecular spintronics for quantum information devices, as demonstrated in magnetic metal-organic molecular systems, the so-called molecular magnets. Here we report the molecular quantum magnetism realized in an inorganic solid Ba3Yb2Zn5O11 with spin-orbit coupled pseudospin-1/2 Yb3+ ions. The magnetization represents the magnetic quantum values of an isolated Yb-4 tetrahedron with a total (pseudo) spin 0, 1 and 2. Inelastic neutron scattering results reveal that a large Dzyaloshinsky-Moriya interaction originating from strong spin-orbit coupling of Yb 4f is a key ingredient to explain magnetic excitations of the molecular magnet states. The Dzyaloshinsky-Moriya interaction allows a non-adiabatic quantum transition between avoided crossing energy levels, and also results in unexpected magnetic behaviours in conventional molecular magnets.

引用

页数：7

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