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B-T-P phase diagram of α-(BEDT-TTF)2KHg(SCN)4

被引：16
作者：
Kartsovnik, MV
Andres, D
Biberacher, W
Christ, P
Steep, E
Balthes, E
Weiss, H
Müller, H
Kushch, ND
机构：
[1] Bayer Akad Wissensch, Walther Meissner Inst, D-85748 Garching, Germany
[2] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, Russia
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[4] Max Planck Inst Festkorperforsch, High Field Magnet Lab, F-38042 Grenoble, France
[5] CNRS, F-38042 Grenoble, France
[6] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
来源：
SYNTHETIC METALS | 2001年 / 120卷 / 1-3期
关键词：
organic conductors based on radical cation salts; phase transitions; magnetic measurements; transport measurements; magnetotransport;
D O I：
10.1016/S0379-6779(00)01118-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present detailed studies of the B-T-P phase diagram of alpha-(BEDT-TTF)(2)KHg(SCN)(4) by means of magnetic torque and magnetoresistance measurements. The phase diagram for magnetic field oriented almost perpendicular to the highly conducting layers closely resembles that expected for a charge-density-wave (CDW) system with an imperfectly nested Fermi surface. The influence of pressure can be readily understood as deteriorating the nesting conditions and thus enhancing the role of the orbital effect of magnetic field. At field strongly tilted from the normal to the layers, both the torque and magnetoresistance display a number of irreversible features that may be associated with a series of first-order phase transitions. This behaviour is not understood within the existing CDW theories.
引用
收藏
页码：687 / 690
页数：4
相关论文
共 24 条
[1]   Argument for charge density wave sub-phases in ground state of α-(BEDT-TTF)2KHg(SCN)4 [J].
Biskup, N ;
Perenboom, JAAJ ;
Brooks, JS ;
Qualls, JS .
SOLID STATE COMMUNICATIONS, 1998, 107 (09) :503-507
[2]   PRESSURE EFFECTS ON THE ELECTRONIC-STRUCTURE AND LOW-TEMPERATURE STATES IN THE ALPHA-(BEDT-TTF)(2)MHG(SCN)(4) ORGANIC-CONDUCTOR FAMILY (M=K,RB,TL,NH4) [J].
BROOKS, JS ;
CHEN, X ;
KLEPPER, SJ ;
VALFELLS, S ;
ATHAS, GJ ;
TANAKA, Y ;
KINOSHITA, T ;
KINOSHITA, N ;
TOKUMOTO, M ;
ANZAI, H ;
AGOSTA, CC .
PHYSICAL REVIEW B, 1995, 52 (20) :14457-14478
[3]  
Chaikin PM, 1996, J PHYS I, V6, P1875, DOI 10.1051/jp1:1996169
[4]   Comparative torque studies of alpha-(BEDT-TTF)(2)MHg(SCN)(4) (M=K, Tl, NH4) [J].
Christ, P ;
Biberacher, W ;
Jansen, AGM ;
Kartsovnik, MV ;
Kovalev, AE ;
Kushch, ND ;
Steep, E ;
Andres, K .
SURFACE SCIENCE, 1996, 361 (1-3) :909-912
[5]   Torque measurements on alpha-(BEDT-TTF)(2)MHg(SCN)(4) [J].
Christ, P ;
Biberacher, W ;
Bensch, W ;
Muller, H ;
Andres, K .
SYNTHETIC METALS, 1997, 86 (1-3) :2057-2058
[6]   Magnetic field-temperature phase diagram of the organic conductor α-(BEDT-TTF)2KHg(SCN)4 [J].
Christ, P ;
Biberacher, W ;
Kartsovnik, MV ;
Steep, E ;
Balthes, E ;
Weiss, H ;
Müller, H .
JETP LETTERS, 2000, 71 (07) :303-306
[7]  
GORKOV LP, 1984, J PHYS LETT-PARIS, V45, pL433, DOI 10.1051/jphyslet:01984004509043300
[8]   Pressure effects to the anomalous state of quasi two-dimensional conductor alpha-(BEDT-TTF)(2)KHg(SCN)(4) [J].
Hanasaki, N ;
Kagoshima, S ;
Miura, N ;
Saito, G .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (04) :1010-1018
[9]   The phase diagram of α-(ET)2TlHg(SCN)4:: An electrodynamic investigation [J].
Hill, S ;
Brooks, JS ;
Fravel, BW ;
Montgomery, LK ;
Tokumoto, M ;
Kinoshita, N ;
Kinoshita, T ;
Tanaka, Y .
SYNTHETIC METALS, 1999, 103 (1-3) :1807-1808
[10]   Phase boundary in the dimensionality of angle-dependent magnetoresistance oscillations in the charge-transfer salt alpha-(BEDT-TTF)(2)KHg(SCN)(4) [J].
House, AA ;
Blundell, J ;
Honold, MM ;
Singleton, J ;
Perenboom, JAAJ ;
Hayes, W ;
Kurmoo, M ;
Day, P .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1996, 8 (45) :8829-8845
123