Alexandre Rykov's Publications List

Dilution and clustering of Fe in the rutile phases of TiO[sub 2] and SnO[sub 2]

2008-12-09T05:51:56Z

A I Rykov, K Nomura, J Sakuma, C Barrero, Y Yoda, T Mitsui (2008) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v77/e014302 77: 1

Odd and even magnetic resonant modes in highly overdoped Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8 + delta]

2008-12-09T05:51:56Z

L Capogna, B Fauque, Y Sidis, C Ulrich, P Bourges, S Pailhes, A Ivanov, J L Tallon, B Liang, C T Lin, A I Rykov, B Keimer (2007) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v75/e060502 75: 6

Dispersion of the odd magnetic resonant mode in near-optimally doped Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8 + [bold delta ]]

2008-12-09T05:51:56Z

B Fauque, Y Sidis, L Capogna, A Ivanov, K Hradil, C Ulrich, A I Rykov, B Keimer, P Bourges (2007) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v76/e214512 76: 21

Persistence of an ordered flux line lattice above the second peak in Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8 + delta]

2008-12-09T05:51:56Z

A Pautrat, Ch. Simon, C Goupil, P Mathieu, A Brulet, C D Dewhurst, A I Rykov (2007) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v75/e224512 75: 22

Phonon density of states in Sr[sub 2]FeCoO[sub 6 - delta] and BaSrFeCoO[sub 6 - delta] : Effects induced by magnetic order and transport coherence

2008-12-09T05:51:56Z

A I Rykov, K Nomura, Ts. Sawada, T Mitsui, M Seto, T Tamegai, M Tokunaga (2003) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v68/e224401 68: 22

Magnetic-Field-Induced Finite-Size Effect in the High-Temperature Superconductor YBa[sub 2]Cu[sub 3]O[sub 7 - delta] : A Comparison with Rotating Superfluid He

2008-12-09T05:51:56Z

R Lortz, C Meingast, A I Rykov, S Tajima (2003) Physical Review Letters http://link.aps.org/abstract/PRL/v91/e207001 91: 20

Magnetic-field-induced finite-size effect in the nigh-temperature superconductor YBa2Cu3O(7-delta): a comparison with rotating superfluid 4He.

2008-12-09T05:09:26Z

The effect of strong magnetic fields (11 T) on superconductivity in YBa2Cu3O(7-delta) is investigated using high-resolution thermal expansion. We show that the field-induced broadening of the superconducting transition is due to a finite-size effect resulting from the field-induced vortex-vortex length scale. The physics of this broadening has recently been elucidated for the closely related case ...

R Lortz, C Meingast, A I Rykov, S Tajima (2003) Phys Rev Lett 91: 20

Superconducting gap and strong in-plane anisotropy in untwinned YBa2Cu3O(7-delta).

2008-12-09T05:00:39Z

With significantly improved sample quality and instrumental resolution, we clearly identify in the ( pi,0) photoemission spectra from YBa(2)Cu(3)O(6.993), in the superconducting state, the long-sought "peak-dip-hump" structure. This advance allows us to investigate the large a-b anisotropy of the in-plane electronic structure including, in particular, a 50% difference in the magnitude of the super...

D H Lu, D L Feng, N P Armitage, K M Shen, A Damascelli, C Kim, F Ronning, Z X Shen, D A Bonn, R Liang, W N Hardy, A I Rykov, S Tajima (2001) Phys Rev Lett 86: 19 4370-4373

Phase fluctuations and the pseudogap in YBa(2)Cu(3)O (x).

2008-12-09T05:14:40Z

The thermodynamics of the superconducting transition is studied as a function of doping using high-resolution expansivity data of YBa(2)Cu(3)O (x) single crystals and Monte Carlo simulations of the anisotropic 3D- XY model. We directly show that T(c) of underdoped YBa(2)Cu(3)O (x) is strongly suppressed from its mean-field value (T(MF)(c)) by phase fluctuations of the superconducting order paramet...

C Meingast, V Pasler, P Nagel, A Rykov, S Tajima, P Olsson (2001) Phys Rev Lett 86: 8 1606-1609

Transverse-field components of the flux-line lattice in the anisotropic superconductor YBa[sub 2]Cu[sub 3]O[sub 7 - delta]

2008-12-09T05:51:56Z

P G Kealey, D Charalambous, E M Forgan, S L Lee, S T Johnson, P Schleger, R Cubitt, D McK. Paul, C M Aegerter, S Tajima, A Rykov (2001) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v64/e174501 64: 17

Charge confinement on the CuO[sub 2] planes in slightly overdoped YBa[sub 2]Cu[sub 3]O[sub 7 - delta ] and the role of metallic chains

2008-12-09T05:51:56Z

N E Hussey, H Takagi, Y Iye, S Tajima, A I Rykov, K Yoshida (2000) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v61/pR6475 61: 10

Anomalously large oxygen-ordering contribution to the thermal expansion of untwinned YBa2Cu3O6.95 single crystals: A glasslike transition near room temperature

2008-12-09T05:14:40Z

We present high-resolution thermal expansion data from 5-500 K of untwinned YBa2Cu3Ox (Y123) single crystals for x approximately 6.95 and x = 7.0. Large contributions to the thermal expansivities due to O ordering are found for x approximately 6.95, which disappear below a kinetic glasslike transition near 280 K. The kinetics at this glass transition is governed by an energy barrier of 0.98+/-0.07...

Nagel, Pasler, Meingast, Rykov, Tajima (2000) Phys Rev Lett 85: 11 2376-2379

Superconductivity-induced effects on phononic and electronic Raman scattering in twin-free YBa[sub 2]Cu[sub 3]O[sub 7 - x] single crystals

2008-12-09T05:51:56Z

M F Limonov, A I Rykov, S Tajima, A Yamanaka (2000) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v61/p12412 61: 18 12412-12419

Angle-resolved photoemission study of insulating and metallic Cu-O chains in PrBa2Cu3O7 and PrBa2Cu4O8

2008-12-09T05:00:39Z

We compare the angle-resolved photoemission spectra of the hole-doped Cu-O chains in PrBa2Cu3O7 (Pr123) and in PrBa2Cu4O8 (Pr124). While, in Pr123, a dispersive feature from the chain takes a band maximum at k(b) (momentum along the chain) approximately pi/4 and loses its spectral weight around the Fermi level, it reaches the Fermi level at k(b) approximately pi/4 in Pr124. Although the chains in ...

Mizokawa, Kim, Shen, Ino, Yoshida, Fujimori, Goto, Eisaki, Uchida, Tagami, Rykov, Siohara, Tomimoto, Tajima, Yamada, Horii, Hirabayashi (2000) Phys Rev Lett 85: 22 4779-4782

Angle-Resolved Photoemission Study of Insulating and Metallic Cu-O Chains in PrBa[sub 2]Cu[sub 3]O[sub 7] and PrBa[sub 2]Cu[sub 4]O[sub 8]

2008-12-09T05:51:56Z

T Mizokawa, C Kim, Z X Shen, A Ino, T Yoshida, A Fujimori, M Goto, H Eisaki, S Uchida, M Tagami, K Yoshida, A I Rykov, Y Siohara, K Tomimoto, S Tajima, Yuh Yamada, S Horii, N Yamada, Yasuji Yamada, I Hirabayashi (2000) Physical Review Letters http://link.aps.org/abstract/PRL/v85/p4779 85: 22 4779-4782

Angular-dependent muon-spin rotation and torque magnetometry on the mixed state of the high-temperature superconductor YBa[sub 2]Cu[sub 3]O[sub 7 - delta]

2008-12-09T05:51:56Z

C Ager, F Y Ogrin, S L Lee, C M Aegerter, S Romer, H Keller, I M Savic, S H Lloyd, S J Johnson, E M Forgan, T Riseman, P G Kealey, S Tajima, A Rykov (2000) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v62/p3528 62: 5 3528-3533

Flux-Line Lattice Structures in Untwinned YBa[sub 2]Cu[sub 3]O[sub 7 - delta]

2008-12-09T05:51:56Z

S T Johnson, E M Forgan, S H Lloyd, C M Aegerter, S L Lee, R Cubitt, P G Kealey, C Ager, S Tajima, A Rykov, D McK. Paul (1999) Physical Review Letters http://link.aps.org/abstract/PRL/v82/p2792 82: 13 2792-2795

Impurity effects on the superconducting coherence length in Zn- or Ni-doped YBa[sub 2]Cu[sub 3]O[sub 6.9] single crystals

2008-12-09T05:51:56Z

K Tomimoto, I Terasaki, A I Rykov, T Mimura, S Tajima (1999) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v60/p114 60: 1 114-117

Pressure effects on anisotropic resistivity in detwinned YBa[sub 2]Cu[sub 3]O[sub 7 - delta] : Unconventional carrier doping

2008-12-09T05:51:56Z

K Yoshida, A I Rykov, S Tajima, I Terasaki (1999) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v60/pR15035 60: 22

Angle-resolved photoemission study of untwinned PrBa[sub 2]Cu[sub 3]O[sub 7] : Undoped CuO[sub 2] plane and doped CuO[sub 3] chain

2008-12-09T05:51:56Z

T Mizokawa, C Kim, Z X Shen, A Ino, A Fujimori, M Goto, H Eisaki, S Uchida, M Tagami, K Yoshida, A I Rykov, Y Siohara, K Tomimoto, S Tajima (1999) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v60/p12335 60: 17 12335-12341

Change in the order of the melting transition with oxygen content in YBa[sub 2]Cu[sub 3]O[sub 7 - delta ]

2008-12-09T05:51:56Z

A I Rykov, S Tajima, F V Kusmartsev, E M Forgan, Ch. Simon (1999) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v60/p7601 60: 10 7601-7606

Raman Scattering Study on Fully Oxygenated YBa[sub 2]Cu[sub 3]O[sub 7] Single Crystals : x-y Anisotropy in the Superconductivity-Induced Effects

2008-12-09T05:51:56Z

M F Limonov, A I Rykov, S Tajima, A Yamanaka (1998) Physical Review Letters http://link.aps.org/abstract/PRL/v80/p825 80: 4 825-828

Superconductivity-induced effect on “Raman-forbidden” modes in underdoped YBa[sub 2]Cu[sub 3]O[sub 7 - x] single crystals

2008-12-09T05:51:56Z

A G Panfilov, M F Limonov, A I Rykov, S Tajima, A Yamanaka (1998) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v57/pR5634 57: 10

Zn-substitution effects on the optical conductivity in YBa[sub 2]Cu[sub 3]O[sub 7 - delta ] crystals : Strong pair breaking and reduction of in-plane anisotropy

2008-12-09T05:51:56Z

N L Wang, S Tajima, A I Rykov, K Tomimoto (1998) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v57/pR11081 57: 18

Photoinduced oxygen reordering in YBa[sub 2]Cu[sub 3]O[sub 7 - x] single crystals

2008-12-09T05:51:56Z

A G Panfilov, A I Rykov, S Tajima, A Yamanaka (1998) Physical Review B (Condensed Matter and Materials Physics) http://link.aps.org/abstract/PRB/v58/p12459 58: 18 12459-12466

High-field paramagnetic effect in large crystals of YBa[sub 2]Cu[sub 3]O[sub 7 - delta]

2008-12-09T05:47:24Z

A I Rykov, S Tajima, F V Kusmartsev (1997) Physical Review B (Condensed Matter) 55: 13 8557-8563

Optical Study on Phonon Anomalies and Spin Gap in YBa2(Cu1-xZnx)3O6.6.

2008-12-09T05:00:39Z

Hauff, Tajima, Jang, Rykov (1996) Phys Rev Lett 77: 22 4620-4623

Iron migration in the (Y,Ca)Ba2(Cu,Fe)O6+ delta system.

2008-12-09T05:14:40Z

Felner, Hechel, Rykov, Raveau (1994) Phys Rev B Condens Matter 49: 1 686-689