Maltese Cross-Type Magnetic Phase Diagrams in Tm1- X Yb X B12 Antiferromagnets with Yb-Valence Instability and Dynamic Charge Stripes

23 Pages Posted: 23 Dec 2022

See all articles by A.N. Azarevich

A.N. Azarevich

affiliation not provided to SSRN

Alexey Bogach

affiliation not provided to SSRN

Nadezhda Bolotina

affiliation not provided to SSRN

Olga Khrykina

affiliation not provided to SSRN

N. Yu Shitsevalova

affiliation not provided to SSRN

Svitlana Polovets

affiliation not provided to SSRN

Vladimir Filipov

affiliation not provided to SSRN

Slavomir Gabani

Slovak Academy of Sciences - Institute of Experimental Physics

Jozef Kačmarčík

Slovak Academy of Sciences - Institute of Experimental Physics

Karol Flachbart

Slovak Academy of Sciences - Institute of Experimental Physics

Valerii Voronov

affiliation not provided to SSRN

Nikolai Sluchanko

affiliation not provided to SSRN

Abstract

Precise X-ray diffraction, heat capacity, magnetoresistance and magnetization measurements have been carried out on high quality Tm1-xYb x B12 single crystals with the goal to reconstruct the H-T and angular H-φ magnetic phase diagrams in the (110) plane of these antiferromagnets (AF) with dynamic charge stripes and Yb-ion valence instability. The analysis developed here allowed us to conclude in favor of essential changes in the filamentary structure of fluctuating charges, and the emergence and variation of stripe-induced magnetic and charge transport anisotropy that are controlled by lowering the temperature and ytterbium doping. It was found that local charge and spin fluctuations on Yb-sites suppress strongly the complicated AF state. However, the magnetic anisotropy is conserved, and the only moderate modifications of the Maltese Cross –type magnetic phase diagrams are detected in the range x<0.2. We argue that the AF ordering of Tm3+ magnetic moments is the main factor, which determines the anisotropy in the Néel phase ofTm1-xYb x B12 with carrier-mediated magnetic indirect RKKY exchange renormalized significantly by quantum fluctuations of the electron density along <110> directions.

Keywords: Maltese Cross-type magnetic phase diagram, dynamic charge stripes, magnetoresistance anisotropy, rare-earth dodecaborides

Suggested Citation

Azarevich, A.N. and Bogach, Alexey and Bolotina, Nadezhda and Khrykina, Olga and Shitsevalova, N. Yu and Polovets, Svitlana and Filipov, Vladimir and Gabani, Slavomir and Kačmarčík, Jozef and Flachbart, Karol and Voronov, Valerii and Sluchanko, Nikolai, Maltese Cross-Type Magnetic Phase Diagrams in Tm1- X Yb X B12 Antiferromagnets with Yb-Valence Instability and Dynamic Charge Stripes. Available at SSRN: https://ssrn.com/abstract=4310622 or http://dx.doi.org/10.2139/ssrn.4310622

A.N. Azarevich (Contact Author)

affiliation not provided to SSRN ( email )

No Address Available

Alexey Bogach

affiliation not provided to SSRN ( email )

No Address Available

Nadezhda Bolotina

affiliation not provided to SSRN ( email )

No Address Available

Olga Khrykina

affiliation not provided to SSRN ( email )

No Address Available

N. Yu Shitsevalova

affiliation not provided to SSRN ( email )

No Address Available

Svitlana Polovets

affiliation not provided to SSRN ( email )

No Address Available

Vladimir Filipov

affiliation not provided to SSRN ( email )

No Address Available

Slavomir Gabani

Slovak Academy of Sciences - Institute of Experimental Physics ( email )

Jozef Kačmarčík

Slovak Academy of Sciences - Institute of Experimental Physics ( email )

Karol Flachbart

Slovak Academy of Sciences - Institute of Experimental Physics ( email )

Valerii Voronov

affiliation not provided to SSRN ( email )

No Address Available

Nikolai Sluchanko

affiliation not provided to SSRN ( email )

No Address Available

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
16
Abstract Views
135
PlumX Metrics