Magnetoacoustic Relaxation by Cr2+ Jahn-Teller Centers Revealed from Elastic Moduli

被引：1

作者：

Gudkov, Vladimir V. ^{[1
]}

Bersuker, Isaac B. ^{[2
]}

Zhevstovskikh, Irina V. ^{[1
,3
]}

Sarychev, Maksim N. ^{[1
]}

Zherlitsyn, Sergei ^{[4
]}

Yasin, Shadi ^{[4
,6
]}

Korostelin, Yuri V. ^{[5
]}

机构：

[1] Ural Fed Univ, Inst Phys & Technol, 19 Mira St, Ekaterinburg 620002, Russia

[2] Univ Texas Austin, Inst Theoret Chem, Austin, TX 78712 USA

[3] RAS, UB, MN Miheev Inst Met Phys, 18 S Kovalevskaya St, Ekaterinburg 620137, Russia

[4] Helmholtz Zentrum Dresden Rossendorf, Hochfeld Magnetlabor Dresden HLD EMFL, D-01328 Dresden, Germany

[5] RAS, PN Lebedev Phys Inst, 53 Leninskiy Prospect, Moscow 119991, Russia

[6] Amer Univ Middle East, Coll Engn & Technol, Egaila 54200, Kuwait

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2018年 / 215卷 / 24期

关键词：

impurity crystal; relaxation; spin qubit; ultrasound; ZNSE; CRYSTALS;

D O I：

10.1002/pssa.201800586

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetoacoustic investigations of the ZnSe:Cr2+ crystal with sphalerite structure, performed in Faraday geometry, show that there is a new channel of relaxation by the Cr2+ Jahn-Teller (JT) centers, induced by the magnetic field. A new method is worked out that allows to extract the relaxation time, either from the temperature changes of the elastic modulus in fixed magnetic field or from the magnetic field dependences at fixed temperatures. Application of both approaches to the imaginary part of the elastic modulus prove their efficiency and indicate that the magnetic field-dependent relaxation rate reaches the magnitude of about 10(6) s(-1) at T = 1.3 K.

引用

页数：5

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