scholarly journals Evolution of superconductivity and charge order in pressurized RbV3Sb5

2021 ◽  
Author(s):  
Feng Du ◽  
Shuaishuai Luo ◽  
Rui Li ◽  
Brenden R. Ortiz ◽  
Ye Chen ◽  
...  
Keyword(s):  
Normal State ◽  
Ambient Pressure ◽  
Charge Order ◽  
Superconducting Transition ◽  
Close Link ◽  
Pressure Medium ◽  
Similar Temperature ◽  
State Resistance ◽  
Pressure Phase ◽  
Normal State Resistance

Abstract The kagome metals AV3Sb5 (A = K, Rb, Cs) under ambient pressure exhibit an unusual charge order, from which superconductivity emerges. In this work, by applying hydrostatic pressure using a liquid pressure medium and carrying out electrical resistance measurements for RbV3Sb5, we find the charge order becomes suppressed under a modest pressure p c (1.4 < p c < 1.6 GPa), while the superconducting transition temperature T c is maximized. T c is then gradually weakened with further increase of pressure and reaches a minimum around 14.3 GPa, before exhibiting another maximum around 22.8 GPa, signifying the presence of a second superconducting dome. Distinct behaviors in the normal state resistance are found to be associated with the second superconducting dome, similar to KV3Sb5. Our findings point to qualitatively similar temperature-pressure phase diagrams in KV3Sb5 and RbV3Sb5, and suggest a close link between the second superconducting dome and the high-pressure normal state resistance.

Electron Irradiation of YBa2Cu3O7 at low Temperatures

1987 ◽  
Vol 99 ◽  
Author(s):  
B. Stritzker ◽  
W. Zander ◽  
F. Dworschak ◽  
U. Poppe ◽  
K. Fischer
Keyword(s):  
Transition Temperature ◽  
Electron Irradiation ◽  
Normal State ◽  
Low Temperatures ◽  
Superconducting Transition Temperature ◽  
Superconducting Transition ◽  
Radiation Induced ◽  
State Resistance ◽  
Normal State Resistance

ABSTRACTBulk samples of YBa2Cu3O7−x have been homogenously irradiated with 3 MeV electrons at temperatures below 20 K. Whereas the superconducting transition temperature, Tc, drops dramatically with increasing dose the width of the transition remains unchanged (Δ Tc ≤ 1.5 K). The normal state resistance at 100 K increases substantially during the electron irradiation. Several irreproducible experiments can be interpreted with a radiation induced, unstable increase of Tc.

PRESSURE DEPENDENCE OF SUPERCONDUCTIVITY OF THE Tl-Ba-Ca-Cu OXIDE

1988 ◽  
Vol 02 (07) ◽  
pp. 879-883 ◽  
Author(s):  
J.L. ZHANG ◽  
C.G. CUI ◽  
S.L. LI ◽  
Y.L. ZHANG ◽  
X.R. CHENG ◽  
...  
Keyword(s):  
Fine Structure ◽  
Transition Temperature ◽  
Pressure Dependence ◽  
Normal State ◽  
Superconducting Transition Temperature ◽  
Superconducting Transition ◽  
State Resistance ◽  
Normal State Resistance

The pressure dependence of the superconductivity of the Tl-Ba-Ca-Cu-O sample with T c >110 K was studied. It is observed that the superconducting transition temperature increases at the rate of d T co / d P≈1.83 K/GPa up to 1.8K/GPa and the gentle steps of T c are always followed by a jump of the normal state resistance which is considered exhibiting the change of some fine structure related to the Cu-O planes.

Size effects on the normal‐state resistance of long microbridges

1979 ◽  
Vol 50 (11) ◽  
pp. 6974-6977
Author(s):  
Jean Luc Berchier ◽  
Laura Weiss ◽  
Daniel H. Sanchez
Keyword(s):  
Normal State ◽  
Size Effects ◽  
State Resistance ◽  
Normal State Resistance

High-angle grain-boundary junctions inYBa2Cu3O7: Normal-state resistance and 1/fnoise

1995 ◽  
Vol 51 (22) ◽  
pp. 16164-16167 ◽  
Author(s):  
Li Liu ◽  
E. R. Nowak ◽  
H. M. Jaeger ◽  
B. V. Vuchic ◽  
K. L. Merkle ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Normal State ◽  
High Angle ◽  
State Resistance ◽  
Normal State Resistance

HIGH PRESSURE STUDIES OF SUPERCONDUCTING Ba1−xKxBiO3

1990 ◽  
Vol 04 (14) ◽  
pp. 935-944 ◽  
Author(s):  
Z.J. HUANG ◽  
C.Y. HUANG ◽  
P.H. HOR ◽  
R.L. MENG ◽  
Y.Q. WANG ◽  
...  
Keyword(s):  
High Pressure ◽  
Transition Temperature ◽  
Pressure Effects ◽  
Superconducting Transition ◽  
High Current ◽  
Applied Current ◽  
High Pressure Studies ◽  
Sample Resistance ◽  
State Resistance ◽  
Normal State Resistance

We have studied the pressure effects of superconducting Ba 1−x K x BiO 3 for x=0.25, 0.30, 0.35 and 0.40 up to ~16 kbar . The superconducting transition temperature, Tc, increases linearly with pressure, P. We have found that dTc/dP decreases with increasing Tc, and reaches ~0 around Tc~29 K. For the x=0.35 sample, resistance reappears below Tc for pressure >12 kbar. This resistance depends strongly on the applied current. It becomes greater than the normal state resistance and noisy at high current.

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