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Article
Low-Temperature Crystallization of Structural Defects in LuB12 According to 175Lu NMR Data
Studies of dodecaboride LuB12 in the temperature range of 10–300 K show that the 175Lu spectrum is broadened due to the scatter of quadrupole frequency shifts caused by the defects in the Lu sublattice. To explai...
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Article
Electronic Phase Transitions in Heavy-Fermion CeB6 Compound
For the first time, an electronic phase transition at Tc ≈ 340 K in a classical strongly correlated electron system CeB6 is discovered and studied in detail. It is shown that the observed anomalies in the resisti...
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Article
Magnetic Response of Conduction Electrons in Nonmagnetic YB6, LaB6, and YbB6 Hexaborides with Electronic and Structural Instabilities
A detailed investigation of contributions to the magnetization of nonmagnetic YB6, LaB6, and YbB6 hexaboride single crystals has been performed, and a procedure for their separation has been proposed. It has been...
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Article
Three-Dimensional H–φ–θ Phase Diagram of ErB12 Antiferromagnet with Dynamic Charge Stripes
A three-dimensional (H, φ, θ, T = 2 K) magnetic phase diagram has been constructed for the first time for the antiferromagnetic metal Er11B12 with an amplitude-modulated magnetic structure exhibiting an electroni...
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Article
Genesis of Collective Excitations in the Conductivity Spectra of Higher Borides RB6 and RB12 Exhibiting a Cooperative Structural Instability
To describe anomalies in the ac conductivity spectra of higher borides RB6 and RB12 with the Jahn−Teller structural instability, a model based on the dipole nature of the effect of collective lattice vibrations o...
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Article
Collective and Quasi-Local Modes in the Optical Spectra of YB6 and YbB6 Hexaborides with Jahn–Teller Structural Instability
The broad-band reflection spectra of YB6 and YbB6 hexaborides with Jahn–Teller instability of the boron cage have been measured at room temperature. An optical conductivity analysis has revealed, along with the D...
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Article
Open AccessErratum to: Several Articles in JETP Letters
An Erratum to this paper has been published: https://doi.org/10.1134/S0021364022340033
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Article
Detection of Phase Transitions in an Ho0.8Lu0.2B12 Antiferromagnet in Hall Effect Measurements
Detailed Hall effect measurements were carried out at helium temperatures of 2.1–4.2 K in the magnetically ordered phases of a Ho0.8Lu0.2B12 antiferromagnet in a magnetic field of up to 80 kOe on single crystals ...
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Article
Open AccessHall Effect in the Antiferromagnetic State of Ho0.8Lu0.2B12
Detailed measurements of the Hall effect in the Ho0.8Lu0.2B12 antiferromagnetic compound (Néel temperature TN = 5.75 K) in magnetic fields up to 80 kOe oriented in the (110) plane at temperatures of 1.9–6.6 K are...
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Article
Influence of the Fermi Surface Shape on Magnetoresistance Anisotropy in ZrB12
In a strongly correlated ZrB12 (zirconium dodecaboride) metal with an electronic phase separation (dynamic charge stripes), an analysis of the Fermi surface topology is carried out and a map of the open/closed tr...
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Article
Anisotropy of the Hall Effect in the Paramagnetic Phase of Ho0.8Lu0.2B12 Cage Glass
Detailed measurements of the Hall effect in the paramagnetic phase of Ho0.8Lu0.2B12 antiferromagnet at the magnetic field up to 80 kOe in the temperature range of 1.9–300 K have been performed. It has been found ...
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Article
Breaking of Cubic Symmetry in Rare-Earth Dodecaborides with Dynamic Charge Stripes
The effect of symmetry lowering for the parameters of electron transport in rare-earth dodecaborides RB12 (R = Ho, Er, Tm, Lu) with fcc crystal structure at temperatures T ≤ 150 K has been discovered. It has been...
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Article
Spin Fluctuations at the Surface of Strongly Correlated Topological Insulator SmB6
The low temperature (T < 5 K) electron spin resonance in topological Kondo insulator SmB6 is investigated. It is shown that spin relaxation time of the paramagnetic centers responsible for low temperature electro...
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Article
Electron Paramagnetic Resonance in HoxLu1−xB12 Dodecaborides
The high-frequency (60 GHz) electron paramagnetic resonance is studied in HoxLu1−xB12 single crystals at low temperatures (2–80 K) in an applied magnetic field up to 7 T within a wide do** range, 0.01 ≤ x ≤ 1. ...
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Article
Boron 10B—11B Isotope Substitution as a Probe of the Mechanism Responsible for the Record Thermionic Emission in LaB6 with the Jahn—Teller Instability1
We have tested the conduction band electrons of lanthanum hexaboride that is among the most effective electron-beam sources with one of the highest brightness of thermionic emission. We performed infrared spec...
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Article
Magnetic Phase Transitions and the Anisotropy of Charge Carrier Scattering in Antiferromagnetic Metal Ho0.5Lu0.5B12 with Dynamic Charge Stripes
The transverse magnetoresistance, heat capacity, and magnetization of monodomain single crystals of dodecaboride Ho0.5Lu0.5B12 with a cage-glass structure are investigated at helium temperatures. It is shown that...
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Article
Magnetic Properties of Eu0.9Yb0.1B6
The magnetic properties of substitutional solid solutions Eu0.9Yb0.1B6 have been investigated in the temperature range of 2–300 K in fields up to 5 T. The data obtained confirm that the state with the electronic ...
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Article
Features of the Crystal Structure of Tm1–xYbxB12 Dodecaborides near a Quantum Critical Point and at a Metal–Insulator Transition
The magnetic phase diagram of Tm1–xYbxB12 antiferromagnets is determined from the specific heat measurements performed at low and ultralow temperatures (0.07–10 K). Precise experimental studies of the features of...
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Article
Magnetic Anisotropy of the Low-Temperature Specific Heat of Ho0.01Lu0.99B12 with Dynamic Charge Stripes
The specific heat of Ho0.01Lu0.99B12 single crystals with dynamic charge stripes is studied at low and ultralow temperatures (0.07–20 K) in applied magnetic fields of 0–9 Т. It is shown that additional contributi...
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Article
Antiferromagnetic Resonance in GdB6
The electron spin resonance has been measured for the first time both in the paramagnetic phase of the metallic GdB6 antiferromagnet (TN = 15.5K) and in the antiferromagnetic state (T < TN). In the paramagnetic p...
