


卷 168, 编号 2 (2025)
ATOMS, MOLECULES, OPTICS
OBRATNAYa ZADAChA TEORII OTRAZhENIYa DLYa PYaTISLOYNYKh SIMMETRIChNYKh STRUKTUR
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Statisticheskie kharakteristiki spekl-poley pri rasseyanii kogerentnogo sveta na binarnykh i polutonovykh gologrammakh
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OPERATOR DEVIATsII ChASTOTY I ShIRINA SPEKTROV PARAMETRIChESKI SVYaZANNYKh NELINEYNYKh KOLEBANIY S DISSIPATsIEY
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ATOMNYY ChASTOTNYY REPER V SINEY OBLASTI SPEKTRA NA OSNOVE PEREKhODOV 6S1/2 →7P3/2 V PARAKh Cs, ZAKLYuChENNYKh V NANOYaChEYKU
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A SINGLE LASER OPERATED COLD ATOM GRAVIMETER
摘要
A cold atom gravimeter (CAG) using a single laser system has been developed. In the setup, the laser cooled 87Rb atoms are launched in the vertical upward direction and Doppler sensitive two-photon Raman pulse atom interferometry is applied to measure the gravitational acceleration g experienced by the atoms. Using our gravimeter setup, we have measured the local value of g in our laboratory with a sensitivity of 621 μGal for integration time of 1350 s. The use of single laser system keeps our CAG setup simple and compact, and does not require the phase-locking of different lasers.



NUCLEI, PARTICLES, FIELDS, GRAVITY AND ASTROPHYSICS
Konicheskie singulyarnosti v geometrii Minkovskogo
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SOLIDS AND LIQUIDS
TRIPLETNYE OTRITsATEL'NYE IONY VODORODA V ZhIDKOM GELII
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ORDER, DISORDER AND PHASE TRANSITIONS IN CONDENSED MATTER
DEFORMATsIONNYY MEKhANIZM STABILIZATsII DAL'NEGO PORYaDKA V FERROMAGNITNYKh POLIKRISTALLAKh
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Detection of terahertz radiation with the p-n graphene grid
摘要
We developed a cryogenic graphene detector for the sub-THz range. Two types of detection operation are envisaged: the bolometeric and the photovoltaic. We find that the leading mode of operation is bolometric. The epitaxial graphene on SiC used in the detector has a strong temperature-dependent weak localization correction to the conductance below 25 K. The sub-THz radiation elevates the temperature of the electron system in the graphene, and thus suppresses the weak localization. No photovoltaic effect is detected. The responsivity of the detector reaches R∼1⋅10⁻³ A/W below 1 K.



UPRAVLENIE REShETKOY KhOPFIONOV V GELIMAGNETIKE PRI POMOShchI MAGNITNOGO POLYa I ANIZOTROPII
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O SKEYLINGOVYKh SVOYSTVAKh KVAZIKRISTALLIChESKIKh POTENTsIALOV SIMMETRII VOS'MOGO PORYaDKA
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OB APERIODIChESKOM ZATUKhANII V FERROMAGNETIKAKh
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ELECTRONIC PROPERTIES OF SOLIDS
MEZhSLOEVOE SOPROTIVLENIE I MAGNITOSOPROTIVLENIE V DVUKhSLOYNOM ORGANIChESKOM KVAZIDVUMERNOM METALLE θ-(BETS)₄ZnBr₄(C₆H₄Cl2)
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STATISTICAL AND NONLINEAR PHYSICS, PHYSICS OF "SOFT" MATTER
REZUL'TATY ChISLENNOGO MODELIROVANIYa KVAZIIZENTROPIChESKOGO SZhATIYa DEYTERIYa I GELIYa V OBLASTI DAVLENIY DO 5500 GPa
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Razreshenie protivorechiy eksperimentov Artsimovicha s teoriey ravnovesiya Shafranova
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Sinkhrotronnoe issledovanie spektra korrelyatsionnoy funktsii vysot fosfolipidnogo mul'tisloya
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O vychislenii reshetochnoy statisticheskoy summy s pomoshch'yu kvadratur Gaussa
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