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相关论文: Comparative study of Kondo effect in Vanadium dich…

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We present a detailed theoretical investigation on the electronic transport properties of $n$-type monolayer (ML) transition metal dichalcogenides (TMDs) at low temperature in the presence of proximity-induced interactions such as Rashba…

介观与纳米尺度物理 · 物理学 2024-11-05 J. Liu , W. Xu , Y. M. Xiao , L. Ding , H. W. Li , B. Van Duppen , M. V. Milošević , F. M. Peeters

In disordered transition-metal dichalcogenide (TMD) superconductor, both the strong spin-orbit coupling (SOC) and disorder show remarkable effects on superconductivity. However, the features of SOC and disorder were rarely detected…

We investigated optical absorption coefficient spectra of an epitaxial VO2 film in wide photon energy (0.5 - 5.0 eV) and temperature (100 - 380 K) regions. In its insulating phase, we observed two d-d transition peaks around 1.3 eV and 2.7…

强关联电子 · 物理学 2007-05-23 C. H. Koo , J. S. Lee , M. W. Kim , Y. J. Chang , T. W. Noh , J. H. Jung B. G. Chae , H. -T. Kim

Two-dimensional (2D) transition metal di-chalcogenide layers with high electrical conductivity and spin-orbit coupling (SOC) can find huge potential in spintronic devices. With limited success of 2D spin Hall material development, we…

We consider the singular electron-electron interaction corrections to the transport coefficients in disordered metals to test the validity of the Wiedemann-Franz law. We develop a local, quantum kinetic equation approach in which the charge…

无序系统与神经网络 · 物理学 2008-09-25 G. Catelani , I. L. Aleiner

Magnetocaloric effect (MCE) in TbCo2-xFex has been studied by dc magnetization measurements.On substituting Fe in TbCo2, not only the magnetic transition temperature is tuned to room temperature, but also the operating temperature range for…

材料科学 · 物理学 2011-07-07 Madhumita Halder , S. M. Yusuf , M. D. Mukadam , K. Shashikala

We demonstrate that in a single molecule magnet (SMM) strongly coupled to electrodes the Kondo effect involves all magnetic excitations. This Kondo effect is induced by the quantum tunneling of the magnetic moment (QTM). Importantly, the…

强关联电子 · 物理学 2009-11-11 C. Romeike , M. R. Wegewijs , W. Hofstetter , H. Schoeller

We report a detailed study of the magnetic, transport, and thermodynamic properties of Ce$_2$Te$_5$ single crystals, a layered $f$-electron van der Waals magnet. Four consecutive transitions at $\sim$ 5.2, 2.1, 0.9, and 0.4 K were observed…

强关联电子 · 物理学 2022-10-17 Yu Liu , M. M. Bordelon , A. Weiland , P. F. S. Rosa , S. M. Thomas , J. D. Thompson , F. Ronning , E. D. Bauer

We study transport through two quantum dots coupled by an RKKY interaction as a function of temperature and magnetic field. By applying the Numerical Renormalization Group (NRG) method we obtain the transmission and the linear conductance.…

介观与纳米尺度物理 · 物理学 2009-11-11 Chung-Hou Chung , Walter Hofstetter

We report the normal-state transport and magnetic properties of a pressure-induced superconductor CeTe$_{1.82}$. We found that the applied pressure is required to increase the Kondo temperature scale ($T^*_{\rm K} \sim$ 170 K), associated…

强关联电子 · 物理学 2007-05-23 M. H. Jung , A. Alsmadi , H. C. Kim , J. Kamarad , T. Takabatake

We study a small spin-degenerate quantum dot with even number of electrons, weakly connected by point contacts to the metallic electrodes, and subject to an external magnetic field. If the Zeeman energy B is equal to the single-particle…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Pustilnik , Y. Avishai , K. Kikoin

Two-dimensional (2D) transition metal dichalcogenides (TMDCs) with unique electrical properties are fascinating materials used for future electronics. However, the strong Fermi level pinning effect at the interface of TMDCs and metal…

Valley degree of freedom in the 2D semiconductor is a promising platform for the next generation optoelectronics. Electrons in different valleys can have opposite Berry curvature, leading to the valley Hall effect (VHE). However, VHE…

介观与纳米尺度物理 · 物理学 2022-09-22 Chongyun Jiang , Abdullah Rasmita , Hui Ma , Qinghai Tan , Zumeng Huang , Shen Lai , Sheng Liu , Xue Liu , Qihua Xiong , Wei-bo Gao

Atomically thin transition metal dichalcogenides (TMDCs) such as MoS$_2$ and WSe$_2$ are emerging as a new platform for exploring many-body effects. Coulomb interactions are markedly enhanced in these materials because of the reduced…

介观与纳米尺度物理 · 物理学 2017-10-03 Shuigang Xu , Liheng An , Jiangxiazi Lin , Zefei Wu , Tianyi Han , Gen Long , Yuheng He , Zhi-qiang Bao , Fan Zhang , Ning Wang

Two-dimensional van der Waals (vdW) ferromagnets drive the advancement in spintronic applications and enable the exploration of exotic magnetism in low-dimensional systems. The entanglement of dual $-$ localized and itinerant $-$ nature of…

The unusual electronic and magnetic properties of the systems Ce$_3$Pd$_{20}$T$_6$ (T = Ge, Si) with two non-equivalent Ce positions are discussed. The logarithmic growth of resistance for both the systems confirms the presence of the Kondo…

强关联电子 · 物理学 2015-04-27 V. N. Nikiforov , Yu. A. Koksharov , A. V. Gribanov , M. Baran , V. Yu. Irkhin

It is found that the polycrystalline NdRu2Ge2 undergoes two successive magnetic transitions at Tt=10 K and TN=19 K. Evidence of metamagnetic transition is detected in the magnetization isotherm data in the antiferromagnetic regime.…

强关联电子 · 物理学 2015-06-11 Bibekananda Maji , K. G. Suresh , A. K. Nigam

The influence of pressure on the magnetically ordered CePd_{2.02}Ge_{1.98} has been investigated by a combined measurement of electrical resistivity, $\rho(T)$, and ac-calorimetry, C(T), for temperatures in the range 0.3 K<T<10 K and…

强关联电子 · 物理学 2009-11-07 H. Wilhelm , D. Jaccard

Quantum corrections to electrical resistance can serve as sensitive probes of the magnetic landscape of a material. For example, interference between time-reversed electron paths gives rise to weak localization effects, which can provide…

材料科学 · 物理学 2021-03-31 Xinxin Cai , Jin Yue , Peng Xu , Bharat Jalan , Vlad S. Pribiag

The Hall effect and resistivity of the carrier doped magnetic semiconductor Fe$_{1-x}$Co$_x$S$_2$ were measured for $0\le x \le 0.16$, temperatures between 0.05 and 300 K, and fields of up to 9 T. Our Hall data indicate electron charge…

强关联电子 · 物理学 2009-12-16 S. Guo , D. P. Young , R. T. Macaluso , D. A. Browne , N. L. Henderson , J. Y. Chan , L. L. Henry , J. F. DiTusa