skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Metallization and superconductivity in the hydrogen-rich ionic salt BaReH9

Journal Article · · Journal of Physical Chemistry. C

BaReH9 is an exceedingly high hydrogen content metal hydride that is predicted to exhibit interesting behavior under pressure. The high-pressure electronic properties of this material were investigated using diamond-anvil cell electrical conductivity techniques to megabar (100 GPa) pressures. The measurements show that BeReH9 transforms to a metal and then superconductor above 100 GPa with a maximum Tc near 7 K. The occurrence of superconductivity is confirmed by the suppression of the resistance drop on application of magnetic fields. The transition to the metallic phase is sluggish, but is accelerated by laser irradiation. Raman scattering and x-ray diffraction measurements, used to supplement the electrical measurements, indicate that the Ba-Re sublattice is largely preserved on compression at the conditions explored, but there is a possibility that hydrogen atoms are gradually disordered under pressure. This is suggested from sharpening of peaks of Raman spectroscopy and x-ray diffraction by heat treatment as well as temperature dependence of resistance under pressure. The data suggest that the transition to the superconducting state is first order. Furthermore, the possibility that the transition is associated with the breakdown of BeReH9 is discussed.

Research Organization:
Carnegie Institution of Washington, Washington, D.C. (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
NA0002006; SC0001057
OSTI ID:
1335842
Journal Information:
Journal of Physical Chemistry. C, Vol. 119, Issue 32; ISSN 1932-7447
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 48 works
Citation information provided by
Web of Science

References (30)

Metallic Hydrogen: A High-Temperature Superconductor? journal December 1968
First-principles prediction of high-temperature superconductivity in metallic hydrogen journal August 1989
Ab Initio Description of High-Temperature Superconductivity in Dense Molecular Hydrogen journal June 2008
A superconductor to superfluid phase transition in liquid metallic hydrogen journal October 2004
Bonding, structures, and band gap closure of hydrogen at high pressures journal January 2013
Optical studies of solid hydrogen to 320 GPa and evidence for black hydrogen journal April 2002
Synchrotron Infrared Measurements of Dense Hydrogen to 360 GPa journal April 2012
Structural, electronic, and dynamical properties of methane under high pressure journal February 2011
X-ray diffraction studies and equation of state of methane at 202GPa journal April 2009
High-pressure study of silane to 150 GPa journal April 2011
High-Pressure Synthesis, Amorphization, and Decomposition of Silane journal March 2011
Hydrogen Dominant Metallic Alloys: High Temperature Superconductors? journal May 2004
General trend for pressurized superconducting hydrogen-dense materials journal January 2010
Pressure-Stabilized Sodium Polyhydrides: NaH n ( n > 1 ) journal June 2011
A little bit of lithium does a lot for hydrogen journal October 2009
Pressure-induced bonding and compound formation in xenon–hydrogen solids journal November 2009
Hydrogen-storage materials for mobile applications journal November 2001
Structure of the Complex Metal Hydride BaReH9 journal September 1994
Transition Metal-Hydrogen Compounds. II. The Crystal and Molecular Structure of Potassium Rhenium Hydride, K 2 ReH 9 journal April 1964
Compressing the Most Hydrogen-Rich Inorganic Ion journal January 2010
Cohesion of Ba Re H 9 and Ba Mn H 9 : Density functional calculations and prediction of ( Mn H 9 ) 2 salts journal January 2007
Spectroscopic and Ab Initio Characterization of the [ReH 9 ] 2- Ion journal December 2006
Superconductivity of Rhenium and Some Rhenium-Osmium Alloys at High Pressure journal January 1968
Pressure-induced superconductivity in strontium and barium journal January 1982
Conductive dense hydrogen journal November 2011
Pressure-induced decomposition of solid hydrogen sulfide journal May 2015
Non-BCS thermodynamic properties of <mml:math altimg="si28.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mi mathvariant="normal">S</mml:mi></mml:mrow></mml:math> superconductor journal August 2015
Hole superconductivity in <mml:math altimg="si11.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:mrow><mml:msub><mml:mrow><mml:mtext>H</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mtext>S</mml:mtext></mml:mrow></mml:math> and other sulfides under high pressure journal April 2015
What superconducts in sulfur hydrides under pressure and why journal February 2015
High-Pressure Hydrogen Sulfide from First Principles: A Strongly Anharmonic Phonon-Mediated Superconductor journal April 2015

Cited By (10)

Pressure-induced superconducting ternary hydride H3SXe: A theoretical investigation journal August 2018
Emergence of superconductivity in doped H2O ice at high pressure journal July 2017
Hydrogen-rich superconductors at high pressures: Hydrogen-rich superconductors journal September 2017
Potential high- T c superconductivity in CaYH 12 under pressure journal March 2019
High-temperature superconductivity in ternary clathrate YCaH 12 under high pressures journal April 2019
A hypervalent and cubically coordinated molecular phase of IF 8 predicted at high pressure journal January 2019
The generalized maximum hardness principle revisited and applied to solids (Part 2) journal January 2017
Ternary superconducting cophosphorus hydrides stabilized via lithium journal October 2019
Superconductivity in metastable phases of phosphorus-hydride compounds under high pressure text January 2016
Emergence of superconductivity in doped H2O ice at high pressure text January 2017

Similar Records

Structural, vibrational, and electronic properties of BaReH9 under pressure
Journal Article · Fri Oct 28 00:00:00 EDT 2016 · Journal of Physics. Condensed Matter · OSTI ID:1335842

Electrical resistance of single-crystal magnetite (Fe 3 O 4 ) under quasi-hydrostatic pressures up to 100 GPa
Journal Article · Thu Apr 07 00:00:00 EDT 2016 · Journal of Applied Physics · OSTI ID:1335842

Evidence for Superconductivity above 260 K in Lanthanum Superhydride at Megabar Pressures
Journal Article · Mon Jan 14 00:00:00 EST 2019 · Physical Review Letters · OSTI ID:1335842