Unconventional Superconductivity in Electron-Doped Layered Li0.48(THF)yHfNCl
Physical review letters Volume 86 Issue 25
Page 5775-5778
published_at 2001-06-18
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| File | |
| Title ( eng ) |
Unconventional Superconductivity in Electron-Doped Layered Li0.48(THF)yHfNCl
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| Creator |
Tou Hideki
Maniwa Y.
Koiwasaki T.
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| Source Title |
Physical review letters
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| Volume | 86 |
| Issue | 25 |
| Start Page | 5775 |
| End Page | 5778 |
| Abstract |
We report magnetic susceptibility measurements on a layered superconductor Li0.48(THF)0.3HfNCl having Tc∼26 K. The present study revealed that (a) the Fermi level density of states is small, N*(EF)∼0.25 states/(eV spin f .u.), (b) mass enhancement is negligible, γ̃∼1, (c) electron-phonon coupling is weak, λep≪1, (d) exchange enhancement is negligible, 1/(1+F0a)∼1, and (e) electronic density parameter is large, rs2D∼10.3 (i.e., low-carrier density). It is difficult to explain the origin of the high Tc in terms of the conventional phonon (BCS) mechanism of superconductivity.
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| NDC |
Physics [ 420 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The American Physical Society
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| Date of Issued | 2001-06-18 |
| Rights |
Copyright (c) 2001 The American Physical Society
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[DOI] 10.1103/PhysRevLett.86.5775
[DOI] http://dx.doi.org/10.1103/PhysRevLett.86.5775
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