Study of electron density of nanostructure metal Tm

Hou, Bingzhe; Liu, Fengyan; Jiao, Bin; Yue, Ming

doi:10.7498/aps.61.077302

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…One may note that k F is one of the most important parameters to tune the oscillation of the RKKY interaction. In our simulation, a smaller k F = 2π/1.243 in units of a −1 than that in Tm is chosen due to the fact that the free-electron density of TmB 4 is lower than that of Tm [25]. Naturally, we also simulate the model with other values of k F in order to examine the stability of the spin orders.…”

Section: Model and Method -The Hamiltonian Can Be Written Asmentioning

confidence: 99%

The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interaction

Feng¹,

Huo²,

Huang³

et al. 2014

EPL

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The ordering of the classical Ising model on the Archimedean lattice that is topologically equivalent to the Shastry-Sutherland one is studied in order to understand the fascinating magnetic properties experimentally observed in rare-earth tetraborides such as TmB4. The long-range Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction which is expected to be predominant in these systems is taken into account, and the magnetization plateaus and rich ordering behaviors depending on the Fermi wave vector are investigated in details by Monte Carlo simulation. The experimental 1/2 magnetization step can be qualitatively reproduced and its stability against the change of is confirmed, suggesting that the coupling between conduction electrons and localized moments may play an important role in modulating the magnetization behaviors in these systems.

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Section: Model and Method -The Hamiltonian Can Be Written Asmentioning

confidence: 99%

The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interaction

Feng¹,

Huo²,

Huang³

et al. 2014

EPL

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“…然而, 由于本征的零带隙以及过高的电子浓度, 无法直接通过栅极调控金属中电子输运的通断 [18] . 为了解决这一问题, 18 -10 20 cm −3 [19] . 为了提高其载流子浓度 [20] , 而21世纪初提出对金属性碳纳米管施加非对称电场以及采用金属纳米团簇阵列等策略 [21][22][23] , 均是为了达成这一目标.…”

Section: 这些都成为制约半导体器件进一步发展的瓶颈unclassified

Semiconducting transport characteristics and their regulation in metal quantum structures

Wu¹,

Zhang²,

Zhou³

et al. 2021

Sci. Sin.-Phys. Mech. Astron.

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Magnetic phase diagram of the Ising model with the long-range RKKY interaction

Regeciová

Farkašovský

2019

Eur. Phys. J. B

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The standard Metropolis algorithm and the parallel tempering method are used to examine magnetization processes in the Ising model with the long-range RKKY interaction on the Shastry-Sutherland lattice. It is shown that the Ising model with RKKY interaction exhibits, depending on the value of the Fermi wave vector k F , the reach spectrum of magnetic solutions, which is manifested in the appearance of new magnetization plateaus on the magnetization curve. In particular, we have found the following set of individual magnetization plateaus with fractional magnetization m/m s =1/18, 1/9, 1/8, 1/5, 1/4, 1/3, 3/8, 5/12, 1/2, 3/5, 2/3, which for different values of k F form various sequences of plateaus, changing from very complex, appearing near the point k F = 2π/1.2, to very simple appearing away this point. Since the change of k F can be induced by doping (the substitution of rare-earth ion by other magnetic ion that introduces the additional electrons to the conduction band) the model is able to predict the complete sequences of magnetization plateaus, which could appear in the tetraboride solid solutions.In the past decade, a considerable amount of effort has been devoted to understanding the underlying physics that leads to anomalous magnetic properties of metallic Shastry-Sutherland magnets [1,2,3,4]. However, in spite of an impressive research activity, the properties of these systems are far from being understood. In particular, this concerns the entire group of rare-earth metal tetraborides RB 4 (R = La − Lu) that exhibits the strong geometrical frustration. These compounds have the tetragonal crystal symmetry P 4/mbm with magnetic ions R 3+ located on an Archimedean lattice (see Fig.1a) that is topologically equivalent to the so-called Shastry-Sutherland lattice [5] (see Fig. 1b). It is supposed that the anomalous properties of these systems Figure 1: The real structure realized in the (001) plane of rare-earth tetraborides (a), which is topologically identical to the Shastry-Sutherland lattice (b). J 1 , J 2 , J 3 , J 4 and J 5 denote the first, second, third, fourth and fifth nearest neighbors on the real Archimedean lattice.are caused by the geometrical frustration that leads to an extensive degeneracy in the ground state. The most famous manifestation of the geometrical frustration in the above-mentioned tetraborides is the observation of the fascinating sequence of magnetization plateaus with the fractional magnetization. For example, for ErB 4 the magnetization plateau has been found at m/m s = 1/2 [2, 3], for T bB 4 at m/m s =2/9, 1/3, 4/9, 1/2 and 7/9 [4], for HoB 4 at m/m s =1/3, 4/9 and 3/5 [2] and for T mB 4 at

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Study of electron density of nanostructure metal Tm

Cited by 4 publications

References 5 publications

The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interaction

The main 1/2 magnetization plateau in Shastry-Sutherland magnets: Effect of the long-range Ruderman-Kittel-Kasuya-Yosida interaction

Semiconducting transport characteristics and their regulation in metal quantum structures

Magnetic phase diagram of the Ising model with the long-range RKKY interaction

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