Detection of Superconductivity in a High-Pressure Chamber with Diamond Anvils by Mutual Induction Method with Laser-Modulated Sample Temperature

Timofeev, Yu. A.; Utyuzh, A. N.

doi:10.1007/s10786-005-0098-7

Cited by 3 publications

(3 citation statements)

References 19 publications

(18 reference statements)

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“…The common solution to this problem is to use a non-magnetic Be-Cu alloy with good temperature characteristics in place of the traditional ferromagnetic alloy. [29,33,35,36] In the measurement with constant pressure but with varying temperatures, the temperature performance of Be-Cu meets the requirements. Be-Cu has a very good electrical conductivity.…”

Section: Design Of Measure Systemmentioning

confidence: 99%

Magnetic transition of ferromagnetic material at high pressure using a novel system

Wang

Han

et al. 2013

Chinese Phys. B

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Section: Design Of Measure Systemmentioning

confidence: 99%

Magnetic transition of ferromagnetic material at high pressure using a novel system

Wang

Han

et al. 2013

Chinese Phys. B

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“…By tuning crystal lattice structure, HP allows changing electronic and magnetic properties of materials [6]. The possibility to follow magnetic properties under pressure, using ac magnetic multi-harmonic susceptibility, allows measuring the critical temperature of new phases and electron dynamic changes.…”

Section: Introductionmentioning

confidence: 99%

PRESS-MAG-O: A new facility to probe materials and phenomena under extreme conditions

Gioacchino

Tripodi

Marcelli

et al. 2008

Journal of Physics and Chemistry of Solids

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Abstract-In the recent years several experiments performed under high magnetic fields [HMF], at high pressure [HP] and/or at low temperature [LT] have led to spectacular discoveries in condensed matter. In many new systems, although challenging, it is strategic to perform a Magneto-Optical analysis, to investigate the phonon behavior in the far infrared (IR) domain. By combining HMF and HP in a wide temperature (T) range to perform simultaneously IR magneto-optics and ac-magneto-dynamic experiments, it will be possible to achieve unique information on systems and/or new phenomena, almost impossible to obtain with standard spectroscopic methods. Here we present PRESS-MAG-O, a new facility under construction that will perform HP experiments under HMF in a wide T range. The system is expected to be operational by the end of 2007 and will be tested at SINBAD, the IR synchrotron radiation beamline operational since 2001 at DAΦNE, the storage ring of the INFN Frascati National Laboratory (LNF). While for IR experiments an interferometer will be used, for the magneto-dynamic experiments a SQUID magnetometer in the 10 Hz -2 KHz frequency range will be utilized. HP will be applied to samples by a Cu-Be diamond anvil cell (DAC), so that the device will be able to collect FTIR spectra and high harmonic ac susceptibility data in a dc magnetic field up to 8 T and to about 20 GPa in a wide temperature range (4.2-200 K).Phase Transition, High Pressure, High Harmonic Magnetic ac susceptibility measurements, IR spectroscopy.

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“…1d). According to the theory of the modulated magnetic susceptibility 46,47 , this 'peak' results from the superconducting transition of the La 3 Ni 2 O 7-d sample. To enhance visibility, we mark the broad peak in light green with the background represented by a dashed line.…”

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Evidence of filamentary superconductivity in pressurized La3Ni2O7-delta single crystals

Sun,

Zhou,

Guo

et al. 2023

Preprint

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Since the discoveries of high-temperature superconductivity in cuprate superconductors1,2, the attempts to understand their superconducting mechanism and search for new high-temperature superconducting families have never been paused in over three decades. Recently, the signatures of superconductivity near 80 K have been discovered in the single crystal of La3Ni2O7-d under pressure3, which makes it a new candidate of the high-temperature superconductors dominated by 3d transition elements after the cuprate and iron-pnictide superconductors1,2,4, and has attracted significant attention. However, the superconductivity, characterized by the zero resistance and the Meissner effect, is anomalously irreproducible in La3Ni2O7-d. In this study, we report the experimental results obtained from highly sensitive ac susceptibility measurements, which reveal that the maximum superconducting volume fraction in the La3Ni2O7-d sample is approximately 1% (employing superconducting vanadium as a reference). In tandem with the observation of the zero-resistance state only in some of the samples, we suggest that the superconductivity in this nickelate is filamentary-like. Furthermore, from the high-pressure Hall coefficient (RH) measurements, we find that RH remains positive under pressure up to 28.8 GPa but displays a significant change in RH(P) at the critical pressure of about 10 GPa, where the superconductivity emerges, highlighting the crucial role of hole-carrier enhancement in boosting the superconductivity in La3Ni2O7-d. Our results provide new insights into understanding the puzzling questions of the high-Tc superconductivity emerging from this complex system and a clue for exploring new high-Tc superconducting materials in 3d transition metal compounds.

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Detection of Superconductivity in a High-Pressure Chamber with Diamond Anvils by Mutual Induction Method with Laser-Modulated Sample Temperature

Cited by 3 publications

References 19 publications

Magnetic transition of ferromagnetic material at high pressure using a novel system

Magnetic transition of ferromagnetic material at high pressure using a novel system

PRESS-MAG-O: A new facility to probe materials and phenomena under extreme conditions

Evidence of filamentary superconductivity in pressurized La3Ni2O7-delta single crystals

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