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Singlet state formation and its impact on the magnetic structure in the tetramer system SeCuO3 (CROSBI ID 253450)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Cvitanić, Tonči ; Šurija, Vinko ; Prša, Krunoslav ; Zaharko, Oksana ; Kupčić, Ivan ; Babkevich, Peter ; Frontzek, Matthias ; Požek, Miroslav ; Berger, Helmuth ; Magrez, Arnaud et al. Singlet state formation and its impact on the magnetic structure in the tetramer system SeCuO3 // Physical review. B, 98 (2018), 5; 054409-1-054409-8. doi: 10.1103/PhysRevB.98.054409

Podaci o odgovornosti

Cvitanić, Tonči ; Šurija, Vinko ; Prša, Krunoslav ; Zaharko, Oksana ; Kupčić, Ivan ; Babkevich, Peter ; Frontzek, Matthias ; Požek, Miroslav ; Berger, Helmuth ; Magrez, Arnaud ; Ronnow, Henrik M. ; Grbić, Mihael S. ; Živković, Ivica

engleski

Singlet state formation and its impact on the magnetic structure in the tetramer system SeCuO3

We present an experimental investigation of the magnetic structure in a tetramer system SeCuO3 using neutron powder di raction and nuclear resonance techniques. We establish a commensurate antiferromagnetic ordering with a propagation vector k = (0 ; 0 ; 1). The order parameter follows a critical behavior near TN = 8 K, with a critical exponent beta = 0.32 in agreement with a 3D universality class. Evidence is presented that a singlet state starts to form on tetramers at temperatures as high as 200 K, and its signature is preserved within the ordered state through a strong renormalization of the ordered magnetic moment on two non-equivalent copper sites, m(Cu1) ~  0.35 uB and m(Cu2) < 0.8 uB at 1.5 K.

NMR ; neutrons ; singlet ; tetramer ; quantum magnetism

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Podaci o izdanju

98 (5)

2018.

054409-1-054409-8

objavljeno

2469-9950

2469-9969

10.1103/PhysRevB.98.054409

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Fizika

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