Cyclotron resonance in InSb and GaAs with magnetic fields up to 140 T

Herlach, F.; Davis, Jeffrey A.; Schmidt, R. L.; Spector, Harold N.

doi:10.1103/physrevb.10.682

Cited by 32 publications

(5 citation statements)

References 14 publications

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“…High field CR is historically much older than ESR, and much work has been done so far. Experiments on InSb and GaAs done using a CO 2 laser (λ ∼ 10 µm, f ∼ 30 THz) and the single turn coil method were reported in 1974 [21]. Recently a CR experiment performed with up to 700 T by means of flux compression has been reported [35]; details of this will be mentioned later.…”

Section: Static Fieldmentioning

confidence: 96%

“…Due to the free expansion, the sample put inside the coil can survive. This method was first developed by Furth et al [20], but much developed later and brought to real use for physical experiments by Herlach et al [21]. Now this type of magnet is available at the Institute for Solid State Physics (ISSP) of the University of Tokyo [22,23] and the Megagauss Laboratory of Humboldt University at Berlin [24].…”

Section: Destructive Pulsed Fieldsmentioning

confidence: 99%

See 1 more Smart Citation

Physics in high magnetic fields

Motokawa¹

2004

Rep. Prog. Phys.

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Along with pressure and temperature, the magnetic field is one of the physical parameters that are used for the investigation of matter. It is an important tool for investigating magnetic and electronic properties from both the microscopic and macroscopic points of view. The interaction energy of a substance with a magnetic field, i.e. Zeeman energy or Landau energy, is small even at a field of 2 T as can be provided by a conventional electromagnet. Compared with the inner energies of a substance, magnetic fields as high as possible have been required for obtaining fine and detailed information on the internal structure and energy states. Due to the strong Maxwell stress, however, it is quite difficult to obtain a magnetic field higher than 50 T and much effort has been dedicated to the development of magnets ever since the laboratory electromagnet was invented.The purpose of this paper is to describe the physical effects that have been investigated and the phenomena that have been revealed using high magnetic fields, as well as the development of magnet technology and measurement technology. In addition, application to materials processing is mentioned as an active application of high magnetic fields.

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Section: Static Fieldmentioning

confidence: 96%

Section: Destructive Pulsed Fieldsmentioning

confidence: 99%

Physics in high magnetic fields

Motokawa¹

2004

Rep. Prog. Phys.

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“…This installation was built with a minimum of manpower and resources, it was simple and compact and could easily be transported in a rented van from Chicago to Stanford. After the return to Chicago, it was used for the first infrared cyclotron resonance experiment in a megagauss field [81].…”

Section: The Single-turn Coil Techniquementioning

confidence: 99%

Pulsed magnets

Herlach¹

1999

Rep. Prog. Phys.

Self Cite

110

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Pulsed magnets are divided into two categories: below 100 T with pulse duration in the range 1 ms-1 s, and above 100 T with pulse duration of order microsecond due to self-destruction of the coil. For both categories, simple scaling laws for the performance are given. For nondestructive magnets, these depend in the first place on the mechanical strength and electrical conductivity of the materials used in coil design; another important parameter is the size of the bore. Together with the energy and power available from the pulsed power supply, this determines peak field and pulse duration. Different types of power supply are discussed, capacitor banks as well as controlled rectification of ac power. For destructive magnets, there is a simple relation between the peak field and the velocity at which the coil structure is expanded by the magnetic force; this can be estimated from shock wave properties of the conductor. The expansion can be neutralized by imploding the coil in a flux compression experiment. High explosives as well as electromagnetic forces have been used for this purpose to obtain fields up to 2800 T. A simple and efficient method is the exploding single-turn coil; this is best suited for experiments up to 300 T.The design and performance of the different magnets is discussed in detail. A few examples for application of these magnets in experiments are given. Prospects for generating higher fields by different methods are discussed, in particular miniaturization on all levels-coils ('micro-magnets') as well as experiments.

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“…Single-turn coil (STC) technique is a convenient method to generate ultrahigh magnetic fields in a semidestructive way. The development of this technique dates back more than 60 years [11][12][13][14][15][16] and was initiated at ISSP in the 1980s [17][18][19][20][21] . As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Higher magnetic-field generation by a mass-loaded single-turn coil

Gen,

Ikeda,

Kawachi

et al. 2021

Preprint

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Single-turn coil (STC) technique is a convenient way to generate ultrahigh magnetic fields of more than 100 T. During the field generation, the STC explosively destructs outward due to the Maxwell stress and Joule heating. Unfortunately, the STC does not work at its full potential because it has already expanded when the maximum magnetic field is reached. Here, we propose an easy way to delay the expansion and increase the maximum field by using a mass-loaded STC. By loading clay on the STC, the field profile drastically changes, and the maximum field increases by 4 %. This method offers an access to higher magnetic fields for physical property measurements.

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Cyclotron resonance in InSb and GaAs with magnetic fields up to 140 T

Cited by 32 publications

References 14 publications

Physics in high magnetic fields

Physics in high magnetic fields

Pulsed magnets

Higher magnetic-field generation by a mass-loaded single-turn coil

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