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Title: Non‐Fermi‐Liquid Behavior of Superconducting SnH 4

Abstract

Abstract The chemical interaction of Sn with H 2 by X‐ray diffraction methods at pressures of 180–210 GPa is studied. A previously unknown tetrahydride SnH 4 with a cubic structure ( fcc ) exhibiting superconducting properties below T C  = 72 K is obtained; the formation of a high molecular C 2/ m ‐SnH 14 superhydride and several lower hydrides, fcc SnH 2 , and C 2‐Sn 12 H 18 , is also detected. The temperature dependence of critical current density J C (T) in SnH 4 yields the superconducting gap 2Δ(0) = 21.6 meV at 180 GPa. SnH 4 has unusual behavior in strong magnetic fields: B,T ‐linear dependences of magnetoresistance and the upper critical magnetic field B C2 (T) ∝ ( T C – T ). The latter contradicts the Wertheimer–Helfand–Hohenberg model developed for conventional superconductors. Along with this, the temperature dependence of electrical resistance of fcc SnH 4 in non‐superconducting state exhibits a deviation from what is expected for phonon‐mediated scattering described by the Bloch‐Grüneisen model and is beyond the framework of the Fermi liquid theory. Such anomalies occur for many superhydrides, making them much closer to cuprates than previously believed.

Authors:
 [1]; ORCiD logo [2];  [1];  [3]; ORCiD logo [2];  [4];  [5];  [3];  [1];  [6];  [7];  [8];  [9];  [10];  [11];  [1]
  1. Shubnikov Institute of Crystallography Federal Scientific Research Center Crystallography and Photonics Russian Academy of Sciences 59 Leninsky Prospekt Moscow 119333 Russia
  2. Center for High Pressure Science and Technology Advanced Research (HPSTAR) Beijing 100193 China
  3. V. L. Ginzburg Center for High‐Temperature Superconductivity and Quantum Materials P. N. Lebedev Physical Institute Russian Academy of Sciences Moscow 119991 Russia
  4. Skolkovo Institute of Science and Technology Bolshoy Boulevard, 30/1 Moscow 121205 Russia
  5. Center for Fundamental and Applied Research Dukhov Research Institute of Automatics (VNIIA) st. Sushchevskaya, 22 Moscow 127055 Russia, Laboratory of Computational Materials Discovery Moscow Institute of Physics and Technology 9 Institutsky Lane Dolgoprudny 141700 Russia
  6. A.N. Nesmeyanov Institute of Organoelement Compounds Russian Academy of Sciences 28 Vavilova str. Moscow 119334 Russia
  7. Hochfeld‐Magnetlabor Dresden (HLD‐EMFL) and Würzburg‐Dresden Cluster of Excellence Helmholtz‐Zentrum Dresden‐Rossendorf (HZDR) 01328 Dresden Germany
  8. National High Magnetic Field Laboratory Florida State University Tallahassee Florida 32310 USA
  9. Institute of Inorganic Chemistry University of Cologne 50939 Cologne Germany
  10. Earth and Planets Laboratory Carnegie Institution for Science 5241 Broad Branch Road NW Washington DC 20015 USA
  11. V. L. Ginzburg Center for High‐Temperature Superconductivity and Quantum Materials P. N. Lebedev Physical Institute Russian Academy of Sciences Moscow 119991 Russia, HSE Tikhonov Moscow Institute of Electronics and Mathematics National Research University Higher School of Economics 20 Myasnitskaya ulitsa Moscow 101000 Russia
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1996900
Resource Type:
Published Article
Journal Name:
Advanced Science
Additional Journal Information:
Journal Name: Advanced Science Journal Volume: 10 Journal Issue: 30; Journal ID: ISSN 2198-3844
Publisher:
Wiley Blackwell (John Wiley & Sons)
Country of Publication:
Germany
Language:
English

Citation Formats

Troyan, Ivan A., Semenok, Dmitrii V., Ivanova, Anna G., Sadakov, Andrey V., Zhou, Di, Kvashnin, Alexander G., Kruglov, Ivan A., Sobolevskiy, Oleg A., Lyubutina, Marianna V., Perekalin, Dmitry S., Helm, Toni, Tozer, Stanley W., Bykov, Maxim, Goncharov, Alexander F., Pudalov, Vladimir M., and Lyubutin, Igor S. Non‐Fermi‐Liquid Behavior of Superconducting SnH 4. Germany: N. p., 2023. Web. doi:10.1002/advs.202303622.
Troyan, Ivan A., Semenok, Dmitrii V., Ivanova, Anna G., Sadakov, Andrey V., Zhou, Di, Kvashnin, Alexander G., Kruglov, Ivan A., Sobolevskiy, Oleg A., Lyubutina, Marianna V., Perekalin, Dmitry S., Helm, Toni, Tozer, Stanley W., Bykov, Maxim, Goncharov, Alexander F., Pudalov, Vladimir M., & Lyubutin, Igor S. Non‐Fermi‐Liquid Behavior of Superconducting SnH 4. Germany. https://doi.org/10.1002/advs.202303622
Troyan, Ivan A., Semenok, Dmitrii V., Ivanova, Anna G., Sadakov, Andrey V., Zhou, Di, Kvashnin, Alexander G., Kruglov, Ivan A., Sobolevskiy, Oleg A., Lyubutina, Marianna V., Perekalin, Dmitry S., Helm, Toni, Tozer, Stanley W., Bykov, Maxim, Goncharov, Alexander F., Pudalov, Vladimir M., and Lyubutin, Igor S. Fri . "Non‐Fermi‐Liquid Behavior of Superconducting SnH 4". Germany. https://doi.org/10.1002/advs.202303622.
@article{osti_1996900,
title = {Non‐Fermi‐Liquid Behavior of Superconducting SnH 4},
author = {Troyan, Ivan A. and Semenok, Dmitrii V. and Ivanova, Anna G. and Sadakov, Andrey V. and Zhou, Di and Kvashnin, Alexander G. and Kruglov, Ivan A. and Sobolevskiy, Oleg A. and Lyubutina, Marianna V. and Perekalin, Dmitry S. and Helm, Toni and Tozer, Stanley W. and Bykov, Maxim and Goncharov, Alexander F. and Pudalov, Vladimir M. and Lyubutin, Igor S.},
abstractNote = {Abstract The chemical interaction of Sn with H 2 by X‐ray diffraction methods at pressures of 180–210 GPa is studied. A previously unknown tetrahydride SnH 4 with a cubic structure ( fcc ) exhibiting superconducting properties below T C  = 72 K is obtained; the formation of a high molecular C 2/ m ‐SnH 14 superhydride and several lower hydrides, fcc SnH 2 , and C 2‐Sn 12 H 18 , is also detected. The temperature dependence of critical current density J C (T) in SnH 4 yields the superconducting gap 2Δ(0) = 21.6 meV at 180 GPa. SnH 4 has unusual behavior in strong magnetic fields: B,T ‐linear dependences of magnetoresistance and the upper critical magnetic field B C2 (T) ∝ ( T C – T ). The latter contradicts the Wertheimer–Helfand–Hohenberg model developed for conventional superconductors. Along with this, the temperature dependence of electrical resistance of fcc SnH 4 in non‐superconducting state exhibits a deviation from what is expected for phonon‐mediated scattering described by the Bloch‐Grüneisen model and is beyond the framework of the Fermi liquid theory. Such anomalies occur for many superhydrides, making them much closer to cuprates than previously believed.},
doi = {10.1002/advs.202303622},
journal = {Advanced Science},
number = 30,
volume = 10,
place = {Germany},
year = {Fri Aug 25 00:00:00 EDT 2023},
month = {Fri Aug 25 00:00:00 EDT 2023}
}

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https://doi.org/10.1002/advs.202303622

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