From the ediorial board

“For 108 years we have been highlighting advances in physics. To the readers of the journal "Uspekhi Fizicheskikh Nauk" ("Physics-Uspekhi")” Phys. Usp. 69 1–1 (2026)

Reviews of topical problems

G.M. Gusev, Z.D. Kvon, A.D. Levin, E.B. Olshanetsky, N.N. Mikhailov “Thermopower in HgTe-based topological insulators and two-dimensional semimetals” Phys. Usp. 69 2–24 (2026)

A.P. Menushenkov, M.Yu. Kagan “Real-space pairing and formation of Fermi—Bose mixture in BaBiO₃-based family of superconducting oxides” Phys. Usp. 69 25–41 (2026)

Instruments and methods of investigation

A.B. Tolstoguzov, P.Yu. Babenko, A.N. Zinoviev “Surface analysis by low-energy ion scattering spectroscopy” Phys. Usp. 69 42–73 (2026)

From the history of physics. The 100th anniversary of quantum mechanics

K. Barley, A. Ruffing, S.K. Suslov “Old quantum mechanics by Bohr and Sommerfeld from modern perspective” Phys. Usp. 69 74–93 (2026)

S.V. Petrov “Uniqueness of spin 1/2” Phys. Usp. 69 94–98 (2026)

Personalia

A.V. Butenko, D.I. Kazakov, V.D. Kekelidze, V.A. Lebedev, P.V. Logachev, V.A. Matveev, Yu.T. Oganessian, V.V. Parkhomchuk, A.N. Skrinsky, E.M. Syresin, G.V. Trubnikov, B.Yu. Sharkov “Igor' Nikolaevich Meshkov (on his 90th birthday)” Phys. Usp. 69 99–101 (2026)

A.E. Bondar’, N.A. Vinokurov, N.S. Dikansky, G.N. Kulipanov, E.B. Levichev, P.V. Logachev, I.B. Logashenko, I.N. Meshkov, V.V. Parkhomchuk, Yu.A. Tikhonov, V.S. Fadin, Yu.M. Shatunov “Aleksandr Nikolaevich Skrinsky (on his 90th birthday)” Phys. Usp. 69 102–104 (2026)

Scientific news

Yu.N. Eroshenko “Physics news on the Internet: January 2026” Phys. Usp. 69 105–106 (2026)

Reviews of topical problems

A.V. Bagulya, V.M. Grishin, V.N. Ivanchenko “Integral hadron—nuclear cross-sections” Phys. Usp. 69 (2) (2026)

A.F. Barabanov, V.E. Valiulin, A.V. Mikheyenkov, P.S. Savchenkov “Spherically symmetric approaches in the low-dimensional magnetism theory” Phys. Usp. 69 (2) (2026)

S.I. Sadovnikov, A.I. Gusev “Anisotropy of elasticity of strongly nonstoichiometric disordered cubic carbides MC_y (M = Ti, Zr, Hf, Nb, Ta) and monoxides MO_y (M = Ti, V, Nb)” Phys. Usp. 69 (2) (2026)

Physics of our days

A.A. Ostapchuk “Slow slip on tectonic faults” Phys. Usp. 69 (2) (2026)

Instruments and methods of investigation

A.K. Kaveev, G.I. Kropotov “Physical principles of filtration and the design of terahertz radiation filters” Phys. Usp. 69 (2) (2026)

Methodological notes

A.V. Belinsky, I.I. Dzhadan “Nonlocality and nonseparability of quantum and relativistic systems” Phys. Usp. 69 (2) (2026)

B.I. Sturman, E.V. Podivilov “On characteristic times for kinetics of scattering” Phys. Usp. 69 (2) (2026)

Personalia

N.S. Averkiev, P.I. Arseev, M.M. Glazov, A.G. Zabrodskii, S.V. Ivanov, V.V. Kveder, Z.D. Kvon, V.M. Pudalov, M.V. Sadovskii, O.V. Rudenko, S.A. Tarasenko, D.R. Khokhlov “Eugeniyus Levovich Ivchenko (on his 80th birthday)” Phys. Usp. 69 (2) (2026)

Scientific news

Yu.N. Eroshenko “Physics news on the Internet: February 2026” Phys. Usp. 69 (2) (2026)

Reviews of topical problems

S.F. Garanin, V.Yu. Dolinskii “Simulations of Z-pinches” Phys. Usp. 69 (3) (2026)

Conferences and symposia

“Astrophysics and Astronomy (Scientiéc Session of the Physical Sciences Division of the Russian Academy of Sciences (PSD RAS) on March 19, 2025)” Phys. Usp. 69 (3) (2026)

I.D. Karachentsev “Problems of cosmology on small scales of the Universe” Phys. Usp. 69 (3) (2026)

O.K. Sil’chenko “The origin of morphological types of galaxies” Phys. Usp. 69 (3) (2026)

A.V. Moiseev, A. Arshinova, A.A. Smirnova “Archaeology of galactic nuclei activity” Phys. Usp. 69 (3) (2026)

A.E. Volvach, L.N. Volvach, M.G. Larionov “Multi-frequency radio monitoring on RT-22 in Simeiz: variability, structure and gravitational-wave prospects of binary supermassive black holes and galactic kilomasers” Phys. Usp. 69 (3) (2026)

I.I. Zinchenko “Current tasks and prospects of millimeter and submillimeter astronomy” Phys. Usp. 69 (3) (2026)

“Photonics, optoelectronics, terahertz (Scientific session of the Physical Sciences Division of the Russian Academy of Sciences, April 2, 2025)” Phys. Usp. 69 (3) (2026)

S.G. Garanin, F.A. Starikov “Nonlinear and linear adaptive optics for laser beam correction” Phys. Usp. 69 (3) (2026)

Scientific news

Yu.N. Eroshenko “Physics news on the Internet: March 2026” Phys. Usp. 69 (3) (2026)

Personalia

L.M. Zelenyi, K.P. Zybin, V.V. Kveder, N.N. Kolachevsky, E.A. Kuznetsov, A.G. Litvak, V.Ya. Panchenko, V.M. Pudalov, N.A. Ratakhin, O.V. Rudenko, M.V. Sadovskii, V.Yu. Khomich, V.N. Charushin “Gennadii Andreevich Mesyats (on his 90th birthday)” Phys. Usp. 69 (3) (2026)

Reviews of topical problems

K.V. Lvov, S.Yu. Stremoukhov “Atom in intense laser fields: from the generation of coherent short-wavelength radiation to the nonlinear properties of the gas medium” Phys. Usp. 69 (4) (2026)

A.S. Ilin, A.N. Matsukatova, M.N. Martyshov, A.V. Emelyanov, V.V. Rylkov, V.A. Demin, P.A. Forsh, P.K. Kashkarov, M.V. Kovalchuk “Memristors for neuromorphic computing systems: basic parameters and methods of their optimization” Phys. Usp. 69 (4) (2026)

Physics of our days

A.V. Butenko, V.A. Lebedev, E.M. Syresin, G.V. Trubnikov “Commissioning of Collider NICA and formation of first heavy ion beams” Phys. Usp. 69 (4) (2026)

Instruments and methods of investigation

T.V. Kulevoy, S.V. Grigoriev, N.A. Kovalenko, K.A. Pavlov, E.V. Moskvin, N.A. Grigoryeva, E.A. Kravtsov, V.A. Skalyga, I.V. Izotov, G.N. Kropachev, A.L. Sitnikov, N.V. Mushnikov, L.V. Kravchuk “Compact neutron source DARIA in Russian strategy for developing neutron research” Phys. Usp. 69 (4) (2026)

Methodological notes

E.H. Lock, S.V. Gerus, A.V. Sadovnikov “Superresolution effect and resolvability criterion for the waves in anisotropic media” Phys. Usp. 69 (4) (2026)

B.P. Kondratyev “From Kepler's ellipses — to R-toroids” Phys. Usp. 69 (4) (2026)

V.S. Beskin, A.Yu. Istomin, F.A. Kniazev, T.I. Khalilov “Synchrotron radiation in nonuniform magnetic field” Phys. Usp. 69 (4) (2026)

Scientific news

Yu.N. Eroshenko “Physics news on the Internet: April 2026” Phys. Usp. 69 (4) (2026)

Personalia

S.V. Garnov, N.S. Ginzburg, M.Yu. Glyavin, V.I. Ilgisonis, V.V. Kveder, V.V. Kocharovskii, Z.F. Krasil’nik, A.V. Krasilnikov, A.G. Litvak, E.A. Mareev, A.M. Sergeev, M.I. Yalandin “Grigory Gennadievich Denisov (on his 70th birthday)” Phys. Usp. 69 (4) (2026)