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The two-dimensional (2D) material Cr$_2$Ge$_2$Te$_6$ is a member of the class of insulating van der Waals magnets. Here, using high resolution angle-resolved photoemission spectroscopy in a detailed temperature dependence study, we identify…

A complex interplay of different energy scales involving Coulomb repulsion, spin-orbit coupling and Hund's coupling energy in two-dimensional (2D) van der Waals (vdW) material produces novel emerging physical state. For instance,…

The three dimensional anisotropic XY ferromagnet has been studied by Monte Carlo simulation. The ferro-para phase transition has been observed to take place at a lower temperature for impure anisotropic XY ferromagnet. The pseudocritical…

统计力学 · 物理学 2024-04-15 Olivia Mallick , Muktish Acharyya

Critical exponents at the ferromagnetic transition were measured for the first time in an organic ferromagnetic material tetrakis(dimethylamino)ethylene fullerene[60] (TDAE-C$_{60}$). From a complete magnetization-temperature-field data set…

统计力学 · 物理学 2009-11-07 Ales Omerzu , Madoka Tokumoto , Bosiljka Tadic , Dragan Mihailovic

The influence of YBa2Cu3O4 (YBCO) superconductor layer (S-layer) with varying thickness d-YBCO = 20 to 50 nm on the magnetic coupling between two La0.67Ca0.33MnO3 (LCMO) ferromagnet layers (F-layer, thickness d-LCMO = 50 nm) in F/S/F…

超导电性 · 物理学 2016-11-23 Rajni Porwal , Anurag Gupta , R. C. Budhani

We provide evidence for the existence of a {\em quantum critical point} at the metallization of magnetite Fe$_{3}$O$_{4}$ at an applied pressure of $p_{c} \approx 8$ GPa. We show that the present ac magnetic susceptibility data support…

强关联电子 · 物理学 2016-08-17 J. Spałek , A. Kozłowski , Z. Tarnawski , Z. Kcakol , Y. Fukami , F. Ono , R. Zach , L. J. Spalek

Single crystalline samples of the van der Waals antiferromagnet CrPS4 were studied by measurements of specific heat and comprehensive anisotropic temperature- and magnetic field-dependent magnetization. In addition, measurements of the heat…

材料科学 · 物理学 2021-06-09 Sergey L. Bud'ko , Elena Gati , Tyler J. Slade , Paul C. Canfield

Criticality of chiral phase transition at finite temperature is investigated in a soft-wall AdS/QCD model with $SU_L(N_f)\times SU_R(N_f)$ symmetry, especially for $N_f=2,3$ and $N_f=2+1$. It is shown that in quark mass plane($m_{u/d}-m_s$)…

高能物理 - 唯象学 · 物理学 2019-02-20 Jianwei Chen , Song He , Mei Huang , Danning Li

The chiral helimagnet Cr1/3NbS2 has been investigated by magnetic, transport and thermal properties measurements on single crystals and by first principles electronic structure calculations. From the measured field and temperature…

强关联电子 · 物理学 2015-03-25 N. J. Ghimire , M. A. McGuire , D. S. Parker , B. Sipos , S. Tang , J. -Q. Yan , B. C. Sales , D. Mandrus

The rotating magnetocaloric effect (RMCE) is a recent interest in magnetic refrigeration technique in which the cooling effect is attained by rotating the anisotropic magnetocaloric material from one orientation to the other in a fixed…

强关联电子 · 物理学 2019-10-21 Anzar Ali , Shama , Yogesh Singh

The recent experimental discovery of intrinsic ferromagnetism in single-layer CrI3 opens a new avenue to low-dimensional spintronics. However, the low Curie temperature Tc=45 K is still a large obstacle to its realistic device application.…

材料科学 · 物理学 2019-06-26 Hongxing Li , Yuan-Kai Xu , Kang Lai , Wei-Bing Zhang

The research on two-dimensional (2D) van der Waals (vdW) ferromagnets has promoted the development of ultrahigh-density and nanoscale data storage. However, intrinsic ferromagnetism in layered magnets is always subject to many factors, such…

Two-dimensional (2D) van der Waals (vdWs) materials have gathered a lot of attention recently. However, the majority of these materials have Curie temperatures that are well below room temperature, making it challenging to incorporate them…

VBr$_3$ is a van der Waals antiferromagnet below the N\'eel temperature of 26.5 K with a saturation moment of 1.2 mB/f.u. above the metamagnetic transitions detected in the in-plane and out-of-plane directions. To reveal the AFM structure…

The celebrated analogy between the pressure-temperature phase diagram of a liquid-gas system and the field-temperature phase diagram of ferromagnet has long been a cornerstone for understanding universality of phase transitions and critical…

强关联电子 · 物理学 2026-04-13 Xinyang Liu , Enze Lv , Xueling Cui , Han Ge , Fangyuan Song , Zhaoming Tian , Gang Su , Kan Zhao , Junsen Xiang , Peijie Sun , Wei Li

The crystallographic, magnetic, and transport properties of the van der Waals bonded, layered compound CrTe3 have been investigated on single crystal and polycrystalline materials. The crystal structure contains layers made up of lozenge…

We study the distinctive features of the interplay between the interlayer superconductivity and ferroelectricity in van der Waals heterostructures. Corresponding analysis is carried out within the framework of the quasiclassical Eilenberger…

超导电性 · 物理学 2025-12-08 D. S. Annenkov , A. A. Kopasov , A. S. Mel'nikov

We study the magnetisation dynamics of a bulk single crystal Cr$_2$Ge$_2$Te$_6$ (CGT), by means of broadband ferromagnetic resonance (FMR), for temperatures from 60 K down to 2 K. We determine the Kittel relations of the fundamental FMR…

材料科学 · 物理学 2019-11-05 S. Khan , C. W. Zollitsch , D. M. Arroo , H. Cheng , I. Verzhbitskiy , A. Sud , Y. P. Feng , G. Eda , H. Kurebayashi

We present a theoretical analysis of the magnetocaloric effect in the frustrated antiferromagnet \Eu. Monte Carlo simulations indicate a large magnetic entropy change $\Delta S_M^{\text{max}} \sim 5.14$ J kg$^{-1}$K$^{-1}$ at $T=2.45$K for…

强关联电子 · 物理学 2022-07-05 D. J. García , D. G. Franco , Pablo S. Cornaglia

Recently discovered 2D van der Waals magnetic materials, and specifically Iron-Germanium-Telluride ($\rm Fe_{5}GeTe_{2}$), have attracted significant attention both from a fundamental perspective and for potential applications. Key open…