Isosbestic point formation on transverse magnetoresistance curves for strongly correlated quantum matter

IF 3.6 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2026-02-01 Epub Date: 2025-12-02 DOI:10.1016/j.solidstatesciences.2025.108156

M.A. Anisimov , A.V. Bogach , A.V. Semeno , A.V. Gribanov , A.V. Bokov , V.A. Sidorov , V.V. Glushkov , A.V. Tsvyashchenko

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Abstract

Features of the formation of isosbestic point (IP) on the curves of transverse magnetoresistance (TMR) were studied for several objects with different transport and magnetic properties, including narrow band semiconductor YbB_5.96, heavy fermion compound Ce₃Pd₂₀Si₆, antiferromagnet NdB₆, magnetic Weyl semimetal with field-induced A-phase GdCoC₂ and metallic system with isolated Ce impurity Ce_0.01La_0.99B₆. Experimental study has been performed on high quality single crystals and polycrystalline samples at temperatures 1.8–300 K in magnetic fields up to 82 kOe. Along with usual IP (T_iso) we discovered a new effect, when T_iso turns out to be very close to the position of the inversion point (T_inv), which separates positive and negative regimes of TMR. The phenomenon, when two characteristic temperatures of different nature practically coincide, is very unusual and may be classified as a single temperature scale (inverse isosbestic point). A general approach, which relates inverse isosbestic point to several competing scattering mechanisms, is suggested and discussed.

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强相关量子物质横向磁阻曲线上的等吸点形成

研究了窄带半导体YbB5.96、重费米子化合物Ce3Pd20Si6、反铁磁体NdB6、场致a相GdCoC2磁性Weyl半金属和含分离Ce杂质Ce0.01La0.99B6的金属体系在横向磁阻（TMR）曲线上等吸点（IP）形成的特征。实验研究了高质量的单晶和多晶样品，温度为1.8-300 K，磁场高达82 kOe。与通常的IP （Tiso）一起，我们发现了一个新的效应，当Tiso被证明非常接近反转点（Tinv）的位置时，它分离了TMR的正和负状态。当两个不同性质的特征温度几乎重合时，这种现象是非常不寻常的，可以归类为单一温标（逆等同化点）。提出并讨论了一种将逆等吸点与几种相互竞争的散射机制联系起来的一般方法。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.