We study the proximity-induced superconductivity effect in a double-stranded DNA by solving the Bogoliubov-de Gennes equations and taking into account the effect of thermal fluctuations of the twist angle between neighboring base pairs. We show that the electron conductance is spin-dependent and the conductance of spin up (down) increases (decreases) due to the spin-orbit coupling (SOC). It is found that, for T < 100 K, the band gap energy is temperature-independent and it decreases due to the SOC. In addition, by solving the Bogoliubov-de Gennes equations and local gap parameter equation self-consistently, we find the critical temperature at which transition to superconductivity can take place.
REFERENCES
1.
R. G.
Endres
, D. C.
Cox
, and R. R. P.
Singh
, Rev. Mod. Phys.
76
, 195
(2004
).2.
Y.
Okahata
, T.
Kobayashi
, K.
Tanaka
, and M.
Shimomura
, J. Am. Chem. Soc.
120
, 6165
(1998
).3.
H. W.
Fink
and C.
Schonenberger
, Nature
398
, 407
(1999
).4.
A.
Rakitin
, P.
Aich
, C.
Papadopoulos
, Y.
Kobzar
, A. S.
Vedeneev
, J. S.
Lee
, and J. M.
Xu
, Phys. Rev. Lett.
86
, 3670
(2001
).5.
O.
Legrand
, D.
Cote
, and U.
Bockelmann
, Phys. Rev. E
73
, 031925
(2006
).6.
D.
Porath
, A.
Bezryadin
, S.
Vries
, and C.
Dekker
, Nature
403
, 653
(2003
).7.
K. H.
Yoo
, D. H.
Ha
, I. O.
Lee
, I. W.
Park
, I.
Kim
, I. I.
Kim
, H. Y.
Lee
, T.
Kawai
, and H. Y.
Choi
, Phys. Rev. Lett.
87
, 198102
(2001
).8.
J. S.
Hwang
, K. J.
Kong
, D.
Ahn
, G. S.
Lee
, D. J.
Ahn
, and S. W.
Hwang
, Appl. Phys. Lett.
81
, 1134
(2002
).9.
B.
Xu
, P.
Zhang
, X.
Li
, and N.
Tao
, Nano Lett.
4
, 1105
(2004
).10.
H.
Cohen
, C.
Nogues
, R.
Naaman
, and D.
Porath
, Proc. Natl. Acad. Sci. U. S. A.
102
, 11589
(2005
).11.
E.
Braun
, Y.
Eichen
, U.
Sivan
, and G.
Ben-Yoseph
, Nature
391
, 775
(1998
).12.
A. J.
Storm
, J.
van Noort
, S.
de Vries
, and C.
Dekker
, Appl. Phys. Lett.
79
, 3881
(2001
).13.
A.
Yu. Kasumov
, M.
Kociak
, S.
Guéron
, B.
Reulet
, V. T.
Volkov
, D. V.
Klinov
, and H.
Bouchiat
, Science
291
, 280
(2001
).14.
W.
Ren
, J.
Wang
, Z.
Ma
, and H.
Guo
, Phys. Rev. B
72
, 035456
(2005
).15.
B.
Gohler
, V.
Hamelbeck
, T. Z.
Markus
, M.
Kettner
, G. F.
Hanne
, Z.
Vager
, R.
Naaman
, and H.
Zacharias
, Science
331
, 894
(2011
).16.
A.-M.
Guo
and Q.-F.
Sun
, Phys. Rev. Lett.
108
, 218102
(2012
).17.
A.-M.
Guo
and Q.-F.
Sun
, Phys. Rev. B
86
, 035424
(2012
).18.
H.
Simchi
, M.
Esmaeilzadeh
, and H.
Mazidabadi
, J. Appl. Phys.
113
, 074701
(2013
).19.
K.
Halterman
and O. T.
Valls
, Phys. Rev. B
65
, 014509
(2001
).20.
A. A.
Shanenko
, M. D.
Croitoru
, and F. M.
Peeters
, Phys. Rev. B
75
, 014519
(2007
).21.
22.
S.
Datta
, Quantum Transport: Atom to Transistor
(Cambridge University Press
, 2005
).23.
T.
Van Duzer
and C. W.
Turner
, Principles of Superconductive Devices and Circuits
(Elsevier North Holland, Inc.
, 1981
).© 2014 AIP Publishing LLC.
2014
AIP Publishing LLC
You do not currently have access to this content.
