English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

High-pressure studies on a new superconducting clathrate: Ba6Ge25

MPS-Authors
/persons/resource/persons126919

Yuan,  H. Q.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126627

Grosche,  F. M.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126563

Carrillo-Cabrera,  W.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126794

Paschen,  S.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126858

Sparn,  G.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126528

Baenitz,  M.
Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126626

Grin,  Y.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126861

Steglich,  F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Yuan, H. Q., Grosche, F. M., Carrillo-Cabrera, W., Paschen, S., Sparn, G., Baenitz, M., et al. (2002). High-pressure studies on a new superconducting clathrate: Ba6Ge25. Journal of Physics-Condensed Matter, 14(44), 11249-11253. doi:10.1088/0953-8984/14/44/462.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-30D6-0
Abstract
The effect of pressure on the low-temperature states of the newly discovered clathrate Ba6Ge25 is investigated by means of measurements of the electrical resistivity. At ambient pressure, Ba6Ge25 undergoes a two-step structural phase transition between 230 and 180 K from metallic behaviour to a high-resistivity state characterized by a mean free path of about 3 A. Interestingly, a Bardeen-Cooper-Schrieffer-like (BCS-like) superconducting transition occurs at T-C approximate to 0.24 K from the resulting 'bad metal'. With increasing pressure, the structural phase transition is depressed but T-C increases drastically. TC reaches a maximum value of 3.85 K at the critical pressure p(C) approximate to 2.8 GPa, where the structural distortion is completely suppressed and the system exhibits metallic behaviour. Higher pressures lead to a slight decrease of T-C.