Publisher's Note: Observation of the intrinsic magnetic susceptibility of highly purified single-wall carbon nanotubes [Phys. Rev. B<b>92</b>, 041402(R) (2015)]

Nakai, Yusuke; Tsukada, Ryo; Ichimura, Ryota; Miyata, Yasumitsu; Saito, Tetsuya; Hata, Kenji; Maniwa, Yutaka

doi:10.1103/physrevb.92.039905

Cited by 3 publications

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“…From field-dependent magnetic susceptibility measurements, ferromagnetic or superparamagnetic contributions from the metal impurities, which are observed for as-obtained SWCNTs, became negligible, and diamagnetic behavior for the SWCNTs was observed, as shown in Figure S5. Although it seems that a small amount of the residue still remained, the amount of impurities is similar to that obtained using a density gradient ultracentrifugation method, 43 meaning that it can be neglected for the magnetic measurements. Our method can be easily scaled up, which is very important to be able to perform magnetic studies on bulk samples of CNTs and their hybrids.…”

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confidence: 51%

DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

et al. 2018

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DyScN@C is an endohedral metallofullerene showing single-molecule magnet (SMM) behavior. In this work, we encapsulated DyScN@C-SMMs into the internal one-dimensional nanospace of single-walled carbon nanotubes (SWCNTs). Using transmission electron microscopy, "peapod" structures were clearly observed. From magnetic field dependent measurements, DyScN@C showed stepwise hysteresis characteristic of SMMs even inside the SWCNTs, and the coercivity increased from 0.5 to 4 kOe. In addition, it showed slow relaxation of the magnetization without an applied external magnetic field. This system is the first example where SMMs have been encapsulated in SWCNTs, and this system could be used in future molecular-spintronics devices.

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confidence: 51%

DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

et al. 2018

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“…31 In order to reduce ferromagnetic impurities, we performed an acid treatment and applied a density gradient ultracentrifuge method, as described in our previous paper. 32 After the treatment, the samples were washed with ethanol and acetone. Vacuum filtration was then performed to prepare buckypaper with a thickness of approximately 100 µm.…”

Section: Methodsmentioning

confidence: 99%

Intertube effects on one-dimensional correlated state of metallic single-wall carbon nanotubes probed by C13 NMR

et al. 2017

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The electronic states in isolated single-wall carbon nanotubes (SWCNTs) have been considered as an ideal realization of a Tomonaga-Luttinger liquid (TLL). However, it remains unclear whether one-dimensional correlated states are realized under local environmental effects such as the formation of a bundle structure. Intertube effects originating from other adjacent SWCNTs within a bundle may drastically alter the one-dimensional correlated state. In order to test the validity of the TLL model in bundled SWCNTs, low-energy spin excitation is investigated by nuclear magnetic resonance (NMR). The NMR relaxation rate in bundled mixtures of metallic and semiconducting SWCNTs shows a power-law temperature dependence with a theoretically predicted exponent. This demonstrates that a TLL state with the same strength as that for effective Coulomb interactions is realized in a bundled sample, as in isolated SWCNTs. In bundled metallic SWCNTs, we found a power-law temperature dependence of the relaxation rate, but the magnitude of the relaxation rate is one order of magnitude smaller than that predicted by theory. Furthermore, we found an almost doubled magnitude of the Luttinger parameter. These results indicate suppressed spin excitations with reduced Coulomb interactions in bundled metallic SWCNTs, which are attributable to intertube interactions originating from adjacent metallic SWCNTs within a bundle. Our findings give direct evidence that bundling reduces the effective Coulomb interactions via intertube interactions within bundled metallic SWCNTs.

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“…Recently, an intrinsic magnetic susceptibility of height purified single-wall carbon nanotubes [6]. The effect of fast neutron irradiation on the magnetic susceptibility and magnetoresistance of Si whiskers with impurity concentration in metal-insulator transition they were observed by Druzhinin, et al [7].…”

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confidence: 99%

The magnetic susceptibility on the transverse antiferromagnetic Ising model: Analysis of the reentrant behavior

Neto

Sousa

Padilha

et al. 2016

Int. J. Mod. Phys. B

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We study the three-dimensional antiferromagnetic Ising model in both uniform longitudinal (H) and transverse (Ω) magnetic fields by using the effective-field theory with finite cluster N = 1 spin (EFT-1). We analyzed the behavior of the magnetic susceptibility to investigate the reentrant phenomena we have seen the same phase diagram previously obtained in another papers. Our results shows the presence of two divergences in the susceptibility that indicates the existence of a reentrant behaviour.

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Publisher's Note: Observation of the intrinsic magnetic susceptibility of highly purified single-wall carbon nanotubes [Phys. Rev. B92, 041402(R) (2015)]

Cited by 3 publications

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DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

Intertube effects on one-dimensional correlated state of metallic single-wall carbon nanotubes probed by C13 NMR

The magnetic susceptibility on the transverse antiferromagnetic Ising model: Analysis of the reentrant behavior

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Publisher's Note: Observation of the intrinsic magnetic susceptibility of highly purified single-wall carbon nanotubes [Phys. Rev. B92, 041402(R) (2015)]

Cited by 3 publications

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DySc2N@C80 Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

DySc2N@C80 Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

Intertube effects on one-dimensional correlated state of metallic single-wall carbon nanotubes probed by C13 NMR

The magnetic susceptibility on the transverse antiferromagnetic Ising model: Analysis of the reentrant behavior

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DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube

DySc₂N@C₈₀ Single-Molecule Magnetic Metallofullerene Encapsulated in a Single-Walled Carbon Nanotube