YBa_2Cu_4O_8

cuprate · Ammm

ambient SCunconventional2D / interfacedisputed

Tc max

82.0 K

Tc ambient

82.0 K

Discovery

1994

Papers

Tc max measured at ambient, single_crystal, susceptibility, arXiv:cond-mat/9611083, confirmed by 5 papers

Evidence (49 records from 43 papers)

the flat columns above are aggregates — each line here is one paper's claim

Tc (K)	P (GPa)	Sample	Method	Pairing	Year	Paper
85.2	1.0	powder	susceptibility	—	2004	cond-mat/0405643
83.8	0.8	powder	susceptibility	—	2004	cond-mat/0405643
82.3	0.4	powder	susceptibility	—	2004	cond-mat/0405643
82.0	ambient	powder	—	—	2003	cond-mat/0301432
82.0	ambient	powder	susceptibility	—	2001	cond-mat/0107538
82.0	ambient	—	resistivity	d-wave	2000	cond-mat/0002283
82.0	ambient	single_crystal	susceptibility	—	1996	cond-mat/9611083
81.5	ambient	powder	susceptibility	—	1998	cond-mat/9812333
81.0	ambient	single_crystal	—	—	2003	cond-mat/0311570
81.0	ambient	powder	—	d-wave	2001	cond-mat/0104252
81.0	ambient	—	susceptibility	—	1999	cond-mat/9907005
81.0	ambient	—	—	—	1999	cond-mat/9907028
80.7	ambient	polycrystal	susceptibility	—	2002	cond-mat/0209684
80.0	ambient	powder	susceptibility	—	2004	cond-mat/0405643
80.0	ambient	—	—	—	2002	cond-mat/0210560
80.0	ambient	single_crystal	—	d-wave	2000	cond-mat/0004094
80.0	ambient	—	muSR	—	2000	cond-mat/0006288
80.0	ambient	single_crystal	susceptibility	d-wave	2000	cond-mat/0010311
80.0	ambient	polycrystal	—	—	1999	cond-mat/9904275
80.0	ambient	single_crystal	resistivity	—	1998	cond-mat/9804121
80.0	ambient	single_crystal	—	—	1998	cond-mat/9810152
80.0	ambient	—	resistivity	—	1998	cond-mat/9812301
78.0	ambient	single_crystal	resistivity	—	2000	cond-mat/0005460
77.6	ambient	single_crystal	resistivity	—	1998	cond-mat/9802252
72.0	ambient	single_crystal	—	—	1998	cond-mat/9810152
70.5	ambient	—	resistivity	—	1998	cond-mat/9812301
65.0	ambient	—	resistivity	—	1998	cond-mat/9812301
62.0	ambient	—	—	—	2004	cond-mat/0402589
—	—	polycrystal	susceptibility	—	2004	cond-mat/0402398
—	—	—	—	—	2004	cond-mat/0406340
—	ambient	single_crystal	susceptibility	—	2003	cond-mat/0307532
—	ambient	polycrystal	resistivity	—	2003	cond-mat/0311083
—	ambient	single_crystal	—	—	2002	cond-mat/0203614
—	ambient	—	—	—	2002	cond-mat/0204447
—	ambient	—	—	—	2002	cond-mat/0205595
—	ambient	—	—	d-wave	2001	cond-mat/0101027
—	ambient	—	—	—	2001	cond-mat/0112212
—	ambient	—	resistivity	—	2000	cond-mat/0008397
—	ambient	powder	NMR	—	2000	cond-mat/0012492
—	ambient	—	—	—	2000	cond-mat/0012517
—	ambient	single_crystal	resistivity	—	1999	cond-mat/9904116
—	ambient	—	ARPES	d-wave	1999	cond-mat/9905185
—	ambient	—	resistivity, specific_heat, ARPES	d-wave	1999	cond-mat/9905219
—	ambient	—	muSR	—	1999	cond-mat/9906216
—	ambient	powder	—	—	1999	cond-mat/9907043
—	ambient	—	ARPES	—	1999	cond-mat/9912394
—	ambient	—	susceptibility	—	1997	cond-mat/9707241
—	ambient	—	resistivity	d-wave	1996	supr-con/9608002
—	ambient	powder	susceptibility	unknown	1994	supr-con/9411001

Structure

Crystal structure: Ammm
Space group: Ammm
Lattice a (Å): 3.841
Lattice c (Å): 27.237

Superconducting parameters

Pairing symmetry: d-wave
Gap structure: nodal
Hc2: 100.0 T (H parallel a)
λ_eph (e–ph coupling): —

Samples & pressure

Pressure type: none
Doping type: hole
Doping level: 0.045